Search result: Catalogue data in Autumn Semester 2017
Mechanical Engineering Master | ||||||
Core Courses | ||||||
Mechanics, Materials, Structures The courses listed in this category “Core Courses” are recommended. Alternative courses can be chosen in agreement with the tutor. | ||||||
Number | Title | Type | ECTS | Hours | Lecturers | |
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151-0107-20L | High Performance Computing for Science and Engineering (HPCSE) I | W | 4 credits | 4G | P. Koumoutsakos, P. Chatzidoukas | |
Abstract | This course gives an introduction into algorithms and numerical methods for parallel computing for multi and many-core architectures and for applications from problems in science and engineering. | |||||
Objective | Introduction to HPC for scientists and engineers Fundamental of: 1. Parallel Computing Architectures 2. MultiCores 3. ManyCores | |||||
Content | Programming models and languages: 1. C++ threading (2 weeks) 2. OpenMP (4 weeks) 3. MPI (5 weeks) Computers and methods: 1. Hardware and architectures 2. Libraries 3. Particles: N-body solvers 4. Fields: PDEs 5. Stochastics: Monte Carlo | |||||
Lecture notes | Link Class notes, handouts | |||||
151-0317-00L | Visualization, Simulation and Interaction - Virtual Reality II | W | 4 credits | 3G | A. Kunz | |
Abstract | This lecture provides deeper knowledge on the possible applications of virtual reality, its basic technolgy, and future research fields. The goal is to provide a strong knowledge on Virtual Reality for a possible future use in business processes. | |||||
Objective | Virtual Reality can not only be used for the visualization of 3D objects, but also offers a wide application field for small and medium enterprises (SME). This could be for instance an enabling technolgy for net-based collaboration, the transmission of images and other data, the interaction of the human user with the digital environment, or the use of augmented reality systems. The goal of the lecture is to provide a deeper knowledge of today's VR environments that are used in business processes. The technical background, the algorithms, and the applied methods are explained more in detail. Finally, future tasks of VR will be discussed and an outlook on ongoing international research is given. | |||||
Content | Introduction into Virtual Reality; basisc of augmented reality; interaction with digital data, tangible user interfaces (TUI); basics of simulation; compression procedures of image-, audio-, and video signals; new materials for force feedback devices; intorduction into data security; cryptography; definition of free-form surfaces; digital factory; new research fields of virtual reality | |||||
Lecture notes | The handout is available in German and English. | |||||
Prerequisites / Notice | Prerequisites: "Visualization, Simulation and Interaction - Virtual Reality I" is recommended. Didactical concept: The course consists of lectures and exercises. | |||||
151-0349-00L | Fatigue Strength of Materials, Components and Structures | W | 4 credits | 3G | M. Guillaume, R. E. Koller | |
Abstract | Fatigue of materials is playing a key role in light weight structures. All applications are affected that are exposed to oscillating loads. The lecture will present the most important methods for analyzing the fatigue strength under service load conditions. This starts with the conventional assessment of a components endurance limit and ends with the application of the damage tolerance philosophy. | |||||
Objective | Goals of the lecture An introduction to the most important terms and phenomena related to fatigue damages of metallic components will be given and explained by practical examples. Methods for assessment of endurance strength, finite life fatigue strength, crack initiation and crack growth will be discussed. The lecture shall demonstrate how to solve fatigue problems in practice. Examples like the ICE disaster at Eschede or structural problems of the Combino tram demonstrate the significance of this subject. The fatigue behavior of lightweight structures for vehicles and aircrafts has to be considered during the component design process. Designing the static strength of a component alone is not sufficient since fatigue damages of such components may cause extremely high costs. Structural components of modern aircraft like Airbus A380 or A400M are designed with respect to crack growth using the damage tolerance philosophy. Understanding fatigue strength and its phenomena requires broad knowledge of material behavior, services loads, manufacturing effects as well as of analysis and test methods. Fatigue strength is a highly interdisciplinary area of work. For this the most important tools and methods shall be presented. | |||||
Content | 1. INTRODUCTION, OVERVIEW, MOTIVATION 1.1 Preface (General introduction and history survey) (Schijve; Chapter 1) 1.2 Standards and Guidelines 1.3 Examples of damage events • Comet-Accident (Pressure cycles, stress concentration) • Aloha-Incident at Hawaii (Multiple site damage) • Accident of an aerial passenger tramway (Fretting corrosion on axle) • ICE-Accident (Wheel failure) 1.4 Presentations • DVD "MTW Materialermüdung (1995, 21')", • DVD "F/A-18 Full Scale Fatigue Test (2004, 12')", • DVD "Sicherheit von Seilbahnen (1996, 7')" with discussion 2. LOADING 2.1 Fatigue strength overview 2.2 Significance of operational loading 2.3 Types of load histories(Schijve; Chapter 9) 2.4 Terms and definitions (Schijve; Chapter 9) 2.5 Measurement of operational loadings (Schijve; Chapter 9) 2.6 Counting algorithms (Schijve; Chapter 9) 2.7 Frequency distributions or spectra (Schijve; Chapter 9) 2.8 Impact of spectrum shape 2.9 Design Spectra (Schijve; Chapter 13) 3. MATERIAL 3.1 Fatigue strength overview 3.2 Evaluation of material properties for cyclic loading (Schijve; Chapter 13) 3.3 Fatigue properties (Schijve; Chapter 6) 3.4 Wöhler-Diagram (Schijve; Chapter 6, 7) 3.5 Scatter of fatigue properties (Schijve; Chapter 12) 3.6 Mean stress effect (Schijve; Chapter 6) 3.7 Damage mechanisms & matierial selection (Schijve; Chapter 2) 3.8 Environmental effects (Schijve; Chapter 16, 17) 3.9 Specific fatigue properties (Schijve; Chapter 6) 4. STRUCTURAL COMPONENT 4.1 Fatigue strength overview 4.2 Notches (Schijve; Chapter 3, 7) 4.3 Residual stresses (Schijve; Chapter 4) 4.4 Size effect 4.5 Surface condition and surface layers (Schijve; Chapter 7, 14) 4.6 Fretting corrosion (Schijve; Chapter 15) 4.7 Summary of fatigue strength improving methods (Schijve; Chapter 14) 5. SAFETY FACTORS (Schijve; Chapter 19) 6. FATIGUE STRENGTH ASSESSMENT 6.1 Fatigue strength overview 6.2 Assessment concepts for fatigue lifetime prediction 6.3 Assessment of the endurance strength 6.4 Finite life fatigue strength assessment using the nominal stress concept (Schijve; Chapter 10) 6.5 Local stress-strain concept (Schijve; Chapter 10) 6.6 Fracture mechanics concept (Schijve; Chapter 5, 8, 11) 6.7 Accuracy of concepts for fatigue lifetime assessment 7. STRUCTURAL INTEGRITY CONCEPTS 7.1 Safe life design (Mirage III, Pressure Vessel) 7.2 Fail safe design (modern aircraft construction) 7.3 Damage tolerance (approach according to US Air Force) 7.4 F/A-18 design philosophy 7.5 Summary | |||||
Lecture notes | All lecture chapters are on Powerpoint presentations. The chapters will be available as presentation handouts at the first day for a fee of CHF 20.- | |||||
Literature | Recommended books as supplement to the lecture: Schijve, Jaap Fatigue of Structures and Materials Springer Verlag, Berlin, ISBN 978-1-4020-6807-2 (Hardcover) Broek, David The Practical Use of Fracture Mechanics Springer Netherlands, ISBN 978-90-247-3707-9 (Hardcover) | |||||
Prerequisites / Notice | Depending on actual fatigue tests a Laboratory visitation at Empa in Dübendorf may be organized. | |||||
151-0353-00L | Mechanics of Composite Materials | W | 4 credits | 2V + 1U | G. Kress | |
Abstract | Modelling of stiffness and strength of fiber-reinforced plastics and laminates made thereof as well as simple structures is considered. For free-edge effects and periodic structures numerically efficient FEM approaches for generalized plane strain and unit-cell modelling are explained. Finally, the mechanical interpretation of experimental measurement results is treated. | |||||
Objective | The objective is to impart understanding of the mechanical response of structures made from anisotropic and heterogeneous fiber-reinforced composite materials with all the peculiarities which are not known from metals. The course shall incite fascination with the multifaceted and exciting modelling questions in this field, providing a basis for research. On the other hand the course provides qualification for composite-materials product development within an industrial environment. | |||||
Content | 1. Introduction and elastic anisotropy 2. Laminate theory 3. Thick-walled laminates and interlaminar stresses 4. Edge effects at multidirectional laminates 5. Structural problems and simplified finite-element modelling 6. Micromechanics 7. Failure hypotheses and damage prediction 8. Damage progression analysis 9. Static-strength notch-size influence 10. Fatigue Response 11. Design and sizing, sandwich theory 12. Plain-weave non-linear mechanical model 13. Composite materials mechanical testing | |||||
Lecture notes | Script and all other course material is available on MOODLE: Link | |||||
Literature | The lecture material is covered by the script and further literature is referenced in there. | |||||
Prerequisites / Notice | None | |||||
151-0357-00L | Ropeway Technology | W | 4 credits | 3G | G. Kovacs | |
Abstract | Ropeways represent a public transport system where steel wired ropes play a central role. Such systems come to a favorite transport solution when the costs for conventional systems become out of scale due to difficult and impossible terrestrial surface (alpine terrain). Additionally ropeways are environment friendly, very energy efficient and offer a very high safety level. | |||||
Objective | Cable cars make use of extensive mechanical systems, which because of their operational location, are exposed to difficult meteorological and topographical conditions. In order to guarantee the requisite safety and reliability of the equipment, the components and their interaction in the system must fulfil stringent functional requirements. This is particularly the case because of the significant distance (2-4km) between the individual structures. The lectures with related exercises offer an excellent opportunity to apply the learned theoretical basic principles of mechanics and engineering in plant construction. Not only the function and resistance of individual components will be studied, but also complex interactions, which are imperative for the safe and smooth running of the equipment. It also includes the teaching of the basics of project planning and design, as well as the evaluation of systems in a distinctly interdisciplinary manner. For the manufacturer of a cable car installation the integration of sub-assemblies making use of very different technologies always poses a particular challenge. For this reason, the methodology for the handling of these typical engineering assignments is important and makes up a significant part of the lecture content. | |||||
Content | Cable cars and cable cranes: Construction methods and areas of application. The use of mechanical principles in system engineering, Swiss building and business regulations, planning and equipment with special consideration for business and the environment: steel cables (construction, evaluation, damage, inspection), drive mechanisms, brakes, vehicles, construction over an extended area. Calculation of the supporting cable with weight strain and with fixed mountings on both sides. Excursions. | |||||
Lecture notes | SEILBAHNEN I | |||||
151-0360-00L | Procedures for the Analysis of Structures | W | 4 credits | 2V + 1U | G. Kress | |
Abstract | Basic theories for structure integrity calculations are presented with focus on strength, stability, fatigue and elasto-plastic structural analysis. Theories and models for one dimesional and planar structures are presented based on energy theorems. | |||||
Objective | Basic principles applied in structural mechanics. Introduction to the theories of planar structures. Development of an understanding of the relationship between material properties, structural theories and design criteria. | |||||
Content | 1. Basic problem of continuum mechanics and energy principles: structural theories, homogenization theories; finite elements; fracture mechanics. 2.Structural theories for planar structures and stability: plane-stress, plate theory, buckling of plates (non-linear plate theory). 3.Strength of material theories and material properties: ductile behaviour, plasticity, von Mises, Tresca, principal stress criterion; brittle behaviour; viscoplastic behaviour, creep resistance. 4. Structural design: fatigue and dynamic structural analysis. | |||||
Lecture notes | Script and all other course material available on MOODLE | |||||
Prerequisites / Notice | none | |||||
151-0368-00L | Aeroelasticity | W | 4 credits | 2V + 1U | F. Campanile | |
Abstract | Introduction to the basics and methods of Aeroelasticity. An overview of the main static and dynamic phenomena arising from the interaction between structural and aerodynamic loads. | |||||
Objective | The course will give you a physical basic overview of current-structure phenomena. Furtermore you will get to know the most important phenomena in the statistical and dynamical aeroelastic as well as an introduction to the methods for mathematical descriptions and for the wording of quantitative forecasts. | |||||
Content | Elemente der Profilaerodynamik. Aeroelastische Divergenz am starren Streifenmodell. Aeroelastische Divergenz eines kontinuierlichen Flügels. Allgemeines über statische Aeroelastik. Ruderwirksamkeit und -umkehr. Auswirkung der Flügelpfeilung auf statische aeroelastische Phänomene. Grundelemente der instationären Aerodynamik. Kinematik des Biegetorsionsflatterns. Dynamik des starren Flügelstreifenmodells. Dynamik des Biegetorsionsflatterns. Einführung in die Modalanalyse Einfühung in weitere Phänomene der dynamischen Aeroelastik. | |||||
Literature | Y. C. Fung, An Introduction to the Theory of Aeroelasticity, Dover Phoenix Editions. | |||||
151-0509-00L | Microscale Acoustofluidics Number of participants limited to 30. | W | 4 credits | 3G | J. Dual | |
Abstract | In this lecture the basics as well as practical aspects (from modelling to design and fabrication ) are described from a solid and fluid mechanics perspective with applications to microsystems and lab on a chip devices. | |||||
Objective | Understanding acoustophoresis, the design of devices and potential applications | |||||
Content | Linear and nonlinear acoustics, foundations of fluid and solid mechanics and piezoelectricity, Gorkov potential, numerical modelling, acoustic streaming, applications from ultrasonic microrobotics to surface acoustic wave devices | |||||
Lecture notes | Yes, incl. Chapters from the Tutorial: Microscale Acoustofluidics, T. Laurell and A. Lenshof, Ed., Royal Society of Chemistry, 2015 | |||||
Literature | Microscale Acoustofluidics, T. Laurell and A. Lenshof, Ed., Royal Society of Chemistry, 2015 | |||||
Prerequisites / Notice | Solid and fluid continuum mechanics. Notice: The exercise part is a mixture of presentation, lab session and hand in homework. | |||||
151-0513-00L | Mechanics of Soft Materials and Tissues | W | 4 credits | 3G | A. E. Ehret | |
Abstract | An introduction to concepts for the constitutive modelling of highly deformable materials with non-linear properties is given in application to rubber-like materials and soft biological tissues. Related experimental methods for materials characterization and computational methods for simulation are addressed. | |||||
Objective | The objective of the course is to provide an overview of the wide range of non-linear mechanical behaviors displayed by soft materials and tissues together with a basic understanding of their physical origin, to familiarize students with appropriate mathematical concepts for their modelling, and to illustrate the application of these concepts in different fields in mechanics. | |||||
Content | Soft solids: rubber-like materials, gels, soft biological tissues Non-linear continuum mechanics: kinematics, stress, balance laws Mechanical characterization: experiments and their interpretation Constitutive modeling: basic principles Large strain elasticity: hyperelastic materials Rubber-elasticity: statistical vs. phenomenological models Biomechanics of soft tissues: composites, anisotropy, heterogeneity Dissipative behavior: examples and the concept of internal variables. | |||||
Lecture notes | Accompanying learning materials will be provided or made available for download during the course. | |||||
Literature | Recommended text: G.A. Holzapfel, Nonlinear Solid Mechanics - A continuum approach for engineering, 2000 L.R.G. Treloar, The physics of rubber elasticity, 3rd ed., 2005 P. Haupt, Continuum Mechanics and Theory of Materials, 2nd ed., 2002 | |||||
Prerequisites / Notice | A good knowledge base in continuum mechanics, ideally a completed course in non-linear continuum mechanics, is recommended. | |||||
151-0519-00L | Computational Solid Mechanics | W | 4 credits | 4G | D. Kochmann | |
Abstract | Theoretical foundations and numerical applications of computational solid mechanics with a focus on the finite element method and related techniques, including the development and implementation of a finite element code in C++. | |||||
Objective | To acquire the theoretical background and the practical implementation experience required to develop and use computational codes and to computationally solve problems of solid mechanics. | |||||
Content | Theoretical concepts of computational continuum mechanics (continuum mechanics in small and finite strains, constitutive modeling, variational methods, finite elements and finite differences, elastodynamics, initial boundary value problems), implementation strategies and details (coding in C++, development of a finite element code including material models, elements, assemblers, solvers, etc.) and application of the code to solve initial boundary value problems. | |||||
Lecture notes | Notes will be provided. | |||||
Literature | No textbook, helpful reference literature will be announced. | |||||
Prerequisites / Notice | A background in solid mechanics is required (e.g., Mechanics 1, 2 and 3 or equivalent); a background in continuum mechanics is helpful. | |||||
151-0523-00L | Railway Vehicle Dynamics | W | 4 credits | 2V + 1U | O. Polach | |
Abstract | After an introduction in to the railway vehicle design, the modelling of the contact between wheel and rail, the building of a simulation model and the fundamentals of the track guiding will be explained. The applications of simulations in the development of railway vehicles will be presented and illustrated on examples. | |||||
Objective | Development of the theoretical basics regarding the track guiding and the vehicle running dynamics. Understanding the background of multi-body dynamics simulation tools and their application in the development of railway vehicles. | |||||
Content | Introduction in to railway vehicle technology: Vehicle concepts, bogies, suspension systems, brakes, drives. Use of multi-body simulations in the railway vehicle industry. Simulation programmes. Vehicle model: Model building, modelling of coil springs, rubber to metal springs, air springs and suspension components with friction. Wheel/rail contact: Contact geometry, contact area, normal forces, tangential forces. Track models. Modelling of track irregularities. Linearization of the contact geometry wheelset-track. Fundamentals of track guiding. Eigenbehaviour, calculation of eigenvalues. Linearised and nonlinear calculation of running stability: Methods and assessment criteria. Influence of vehicle design on the running stability. Curving: Fundamentals, quasi-static solution, dynamic simulation, assessment criteria. Influence of vehicle design on the vehicle performance in curve. Ride comfort assessment. Testing and simulations for the acceptance of running characteristics of railway vehicles. Validation of simulation models for the application in context of vehicle acceptance. | |||||
Lecture notes | Script will be provided. | |||||
Prerequisites / Notice | Fundamentals of mechanics and physics. | |||||
151-0524-00L | Continuum Mechanics I | W | 4 credits | 2V + 1U | E. Mazza | |
Abstract | The lecture deals with constitutive models that are relevant for design and calculation of structures. These include anisotropic linear elsticity, linear viscoelasticity, plasticity, viscoplasticity. Homogenization theories and laminate theory are presented. Theoretical models are complemented by examples of engineering applications and eperiments. | |||||
Objective | Basic theories for solving continuum mechanics problems of engineering applications, with particular attention to material models. | |||||
Content | Anisotrope Elastizität, Linearelastisches und linearviskoses Stoffverhalten, Viskoelastizität, mikro-makro Modellierung, Laminattheorie, Plastizität, Viscoplastizität, Beispiele aus der Ingenieuranwendung, Vergleich mit Experimenten. | |||||
Lecture notes | yes | |||||
151-0525-00L | Wave Propagation in Solids | W | 4 credits | 2V + 1U | J. Dual, D. Mohr | |
Abstract | Plane Waves, harmonic waves, Fourier analysis and synthesis, dispersion, distorsion, damping, group and phase velocity, transmission and reflection, impact, waves in linear elastic continua, elastic plastic waves, experimental and numerical methods in wave propagation. | |||||
Objective | Students learn, which technical problems must be approached using the methods used in wave propagation in solids. Furthermore, they learn to use these methods and develop an intuitive feeling for phenomena that can be expected in various situations. | |||||
Content | Wave Propagation in solids including applications. Content: Phenomenology of wave propagation ( plane waves, harmonic waves, harmonic analysis and synthesis, dispersion, attenuation, group and phase velocity), transmission and reflection, impact problems, waves in linear elastic media ( P- Waves, S-Waves, Rayleigh waves, guided waves), elastic plastic waves, experimental and numerical methods. | |||||
Lecture notes | Handouts | |||||
Literature | Various books will be recommended pertaining to the topics covered. | |||||
Prerequisites / Notice | Language according to the wishes of students. | |||||
151-0532-00L | Nonlinear Dynamics and Chaos I | W | 4 credits | 2V + 2U | F. Kogelbauer | |
Abstract | Basic facts about nonlinear systems; stability and near-equilibrium dynamics; bifurcations; dynamical systems on the plane; non-autonomous dynamical systems; chaotic dynamics. | |||||
Objective | This course is intended for Masters and Ph.D. students in engineering sciences, physics and applied mathematics who are interested in the behavior of nonlinear dynamical systems. It offers an introduction to the qualitative study of nonlinear physical phenomena modeled by differential equations or discrete maps. We discuss applications in classical mechanics, electrical engineering, fluid mechanics, and biology. A more advanced Part II of this class is offered every other year. | |||||
Content | (1) Basic facts about nonlinear systems: Existence, uniqueness, and dependence on initial data. (2) Near equilibrium dynamics: Linear and Lyapunov stability (3) Bifurcations of equilibria: Center manifolds, normal forms, and elementary bifurcations (4) Nonlinear dynamical systems on the plane: Phase plane techniques, limit sets, and limit cycles. (5) Time-dependent dynamical systems: Floquet theory, Poincare maps, averaging methods, resonance | |||||
Lecture notes | The class lecture notes will be posted electronically after each lecture. Students should not rely on these but prepare their own notes during the lecture. | |||||
Prerequisites / Notice | - Prerequisites: Analysis, linear algebra and a basic course in differential equations. - Exam: two-hour written exam in English. - Homework: A homework assignment will be due roughly every other week. Hints to solutions will be posted after the homework due dates. | |||||
151-0535-00L | Optical Methods in Experimental Mechanics | W | 4 credits | 3G | E. Hack, R. Brönnimann | |
Abstract | The lecture introduces optical methods to assess the mechanical behaviour of a structure, to determine material parameters, and to validate results from numerical simulations. Focus is on camera-based techniques for deformation, strain and stress analysis. Applications, strengths and limitations are discussed. The lecture includes two afternoons of hands-on experience at Empa in Dübendorf. | |||||
Objective | The students are able to design basic optical set-ups and describe the process of image formation. They understand the working principle of various optical techniques for shape, deformation and strain measurement. Most notably, they can explain how the measurand is transformed into an interference signal, a change of polarization or of surface temperature. They know the main application fields of the individual techniques. They are able to choose the most appropriate technique for solving a measurement task and to estimate its expected resolution. Through the hands-on experience the students gain a deeper and sustained understanding of the content by applying the theoretical foundations to tangible measurement tasks. | |||||
Content | After an introduction into optics and image acquisition the lecture explains how to transform mechanical quantities such as strain, stress or deformation into an image content. The measurement techniques make use of a variety of optical principles: - Triangulation (Digital Image Correlation, Fringe Projection) - Interference (Speckle Pattern Interferometry, Shearography) - Diffraction (Moiré-Interferometry, Fiber Bragg Grating) - Birefringence (Photoelasticity) - Infrared radiation (Thermal Stress Analysis) In addition, dynamic measurements in the context of modal analysis and transient events are explained. The calibration of imaging optical methods and their application to the validation of numerical simulations are discussed. The content is structured as follows: 1. Imaging methods: an introduction 2. Digital Image Correlation 3. White light structured light techniques 4. Diffraction and interferometry 5. Speckle pattern interferometry 6. Modal analysis and transient deformations 7. Applications to microsystems and interfaces 8. Stress analysis: Photoelasticity 9. Stress analysis: Thermoelasticity 10. Calibration and Validation of numerical models 11. Fibre based methods The lecture includes two afternoons at Empa, where the student will gain first-hand experience with optical methods. Hands-on laboratory includes e.g. Digital Image Correlation, Speckle pattern interferometry, Thermal Stress Analysis, Fibre optic sensors, Fringe projection, depending on availability of the equipment and the interest of the students. | |||||
Lecture notes | Copies of the presented slides will be made available on-line through ILIAS. Each lecture contains a set of exercises. You will be invited to a private blog which will stimulate the discussion of the lecture and the exercises. Standard solutions for the exercises will be posted with a time lag. | |||||
Literature | A good overview on the optical methods is presented in the following text books: Toru Yoshizawa, Ed., Handbook of Optical Metrology, 2nd edition, 2015, CRC Press, Boca Raton ISBN 978-1-4665-7359-8 Pramod Rastogi, Erwin Hack, Eds., Optical Methods for Solid Mechanics: A Full-Field Approach 2012, Wiley-VCH, Berlin ISBN 978-3-527-41111-5 W. N. Sharpe Jr., Ed., Handbook of Experimental Solid Mechanics 2009, Springer, New York ISBN 978-0-387-26883-5 | |||||
Prerequisites / Notice | Basic knowledge of optics and interferometry as taught in basic physics courses are advantageous. The two afternoons with hands-on experience are central elements of the lecture. | |||||
151-0550-00L | Adaptive Materials for Structural Applications | W | 4 credits | 3G | P. Ermanni, A. Bergamini | |
Abstract | Adaptive materials offer appealing ways to extend the design space of structures by introducing time-variable properties into them. In this course, the physical working principles of selected adaptive materials are analyzed and simple models for describing their behavior are presented. Some applications are illustrated, also with laboratory experiments where possible. | |||||
Objective | The study of adaptive materials covers topics that range from chemistry to theoretical mechanics. The aim of this course is to convey knowledge about adaptive materials, their properties and the physical mechanisms that govern their function, so as to develop the skills to deal with this interdisciplinary subject. | |||||
Content | This course will provide the students with an insight into the properties and physical phenomena which lead to the features of adaptive materials. Starting from chemomechanical (skeletal muscles), the physical behavior of a wide range of adaptive materials, thermo- and photo-mechanical, electro-mechanical, magneto-mechanical and meta-materials will be thoroughly discussed and analyzed. Up-to-date results on their performance and their implementation in mechanical structures will be detailed and studied in laboratory sessions. Analytical tools and energy based considerations will provide the students with effective instruments for understanding adaptive materials and assess their performance when integrated in structures or when arranged in particular fashions. Basic concepts: Power conjugated variables, dissipative effects, geometry- and materials-based energy conversion Chemo-mechanical coupling: Energy conversion in skeletal muscle and other chemomechanical systems,optional: and photo-mechanical coupling, azopolymers. Thermo-mechanical coupling: Shape memory alloys / polymers Electromechanical coupling(1): DEA, EBL, electrorheological fluids Shape control / morphing: Use, requirements, challenges Morphing applications of variable stiffness structures: Lab work Electromechanical coupling (2): Piezoelectric, electrostrictive effect Vibration Reduction: Measurement, passive, semi-active (active) damping methods Vibration reduction applications of piezoelectric materials: Lab work Metamaterials: Definition of metamaterials - electromagnetic, acoustical and other metamaterials Magneto-mechanical coupling: Magnetostrictive effect, mSMA, magnetorheological fluids, ferrofluids Energy harvesting and sensing: Energy harvesting with EAP and piezoelectric materials, transducers as sensors: Piezo, resistive,... | |||||
Lecture notes | Lecture notes (manuscript and handouts) will be provided | |||||
151-0573-00L | System Modeling | W | 4 credits | 2V + 2U | G. Ducard | |
Abstract | Introduction to system modeling for control. Generic modeling approaches based on first principles, Lagrangian formalism, energy approaches and experimental data. Model parametrization and parameter estimation. Basic analysis of linear and nonlinear systems. | |||||
Objective | Learn how to mathematically describe a physical system or a process in the form of a model usable for analysis and control purposes. | |||||
Content | This class introduces generic system-modeling approaches for control-oriented models based on first principles and experimental data. The class will span numerous examples related to mechatronic, thermodynamic, chemistry, fluid dynamic, energy, and process engineering systems. Model scaling, linearization, order reduction, and balancing. Parameter estimation with least-squares methods. Various case studies: loud-speaker, turbines, water-propelled rocket, geostationary satellites, etc. The exercises address practical examples. | |||||
Lecture notes | The handouts in English will be sold in the first lecture. | |||||
Literature | A list of references is included in the handouts. | |||||
151-0655-00L | Skills for Creativity and Innovation | W | 4 credits | 3G | I. Goller, C. Kobe | |
Abstract | This lecture aims to enhance the knowledge and competency of students regarding their innovation capability. An overview on prerequisites of and different skills for creativity and innovation in individual & team settings is given. The focus of this lecture is clearly on building competencies - not just acquiring knowledge. | |||||
Objective | - Basic knowledge about creativity and skills - Knowledge about individual prerequisites for creativity - Development of individual skills for creativity - Knowledge about teams - Development of team-oriented skills for creativity - Knowledge and know-how about transfer to idea generation teams | |||||
Content | Basic knowledge about creativity and skills: - Introduction into creativity & innovation: definitions and models Knowledge about individual prerequisites for creativity: - Personality, motivation, intelligence Development of individual skills for creativity: - Focus on creativity as problem analysis & solving - Individual skills in theoretical models - Individual competencies: exercises and reflection Knowledge about teams: - Definitions and models - Roles in innovation processes Development of team-oriented skills for creativity: - Idea generation and development in teams - Cooperation & communication in innovation teams Knowledge and know-how about transfer to idea generation teams: - Self-reflection & development planning - Methods of knowledge transfer | |||||
Lecture notes | Slides, script and other documents will be distributed via moodle.ethz.ch (access only for students registered to this course) | |||||
Literature | Goller, I. & Bessant, J. (2017). Creativity for Innovation Management. Routledge. (ISBN-13: 978-1138641327) As well as material handed out in the lecture | |||||
151-0703-00L | Operational Simulation of Production Lines | W | 4 credits | 2V + 1U | P. Acél | |
Abstract | The student learns the application of the event-driven and computer-based simulation for layout and operational improvement of production facilities by means of practical examples. | |||||
Objective | The student learns the right use of (Who? When? How?) of the event-driven and computer-based simulation in the illustration of the operating procedures and the production facilities. Operating simulation in the productions, logistic and scheduling will be shown by means of practical examples. The student should make his first experiences in the use of computer-based simulation. | |||||
Content | - Application and application areas of the event-driven simulation - Exemplary application of a software tool (Technomatrix-Simulation-Software) - Internal organisation and functionality of simulation tools - Procedure for application: optimizing, experimental design planning, analysis, data preparation - Controlling philosophies, emergency concepts, production in sequence, line production, rescheduling - Application on the facilities projecting The knowledge is enhanced by practice-oriented exercises and an excursion. A guest speaker will present a practical example. | |||||
Lecture notes | will be distributed simultaneously during lecture (+ PDF) | |||||
Prerequisites / Notice | Recommended for all Bachelor-Students in the 5th semester and Master-Students in the 7th semester. | |||||
151-0705-00L | Manufacturing I | W | 4 credits | 2V + 2U | K. Wegener, M. Boccadoro, F. Kuster | |
Abstract | Deeper insight in manufacturing processes: drilling, milling, grinding, honing, lapping, electro erosion and electrochemical machining. Stability of processes, process chains and process choice. | |||||
Objective | Deepened discussion on the machining processes and their optimisation. Outlook on additional areas such as NC-Technique, dynamics of processes and machines, chatter as well as process monitoring. | |||||
Content | Deepened insight in the machining processes and their optimisation, chip removal by undefined cutting edge such as grinding, honing and lapping, machining processes without cutting edges such as EDM, ECM, outlook on additional areas as NC-technique, machine- and process dynamics including chatter and process monitoring | |||||
Lecture notes | yes | |||||
Prerequisites / Notice | Prerequisites: Recommendation: Lecture 151-0700-00L Manufacturing elective course in the 4th semester. Language: Help for English speaking students on request as well as english translations of the slides shown. |
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