151-0324-00L GL zum Bemessen von Kunststoffbauteilen
| Semester | Frühjahrssemester 2023 |
| Dozierende | G. P. Terrasi |
| Periodizität | jährlich wiederkehrende Veranstaltung |
| Lehrsprache | Deutsch |
| Kurzbeschreibung | Unverstärkte und faserverstärkte Kunststoffe (FVWS) für tragende Anwendungen. Bemessungsansätze für unverstärkte Kunststoffe unter ruhender, kombinierter und schwingender Belastung. Stabilität und Bruchmechanik. Processing. Zusammensetzung von FVWS. Eigenschaften von Faser- und Matrixwerkstoffen. Verarbeitung und Bemessung von FVWS: Kontinuums- und Netztheorie, Stabilität und Langzeitverhalten. |
| Lernziel | Vermitteln der Grundlagen bezüglich Ingenieurbemessung mit unverstärkten und faserverstärkten Kunststoffen (FVWS) für tragende Anwendungen. Parallel zu der Präsentation der Grundlagen werden viele praktische Anwendungen behandelt. |
| Inhalt | 1. Introduction 1.1 Retrospective view 1.2 State-of-the-art 1.3 Prospects for the future 1.4 References 2. Engineering design with neat polymers and with random-oriented fibre reinforced polymers 2.1 Scope of applications 2.2 Static loading 2.21 Tensile- and compressive loading 2.22 Flexural loading 2.23 Combined loading 2.24 Buckling 2.3 Fatigue 2.4 Brittle failure 2.5 Variable loading 2.6 Thermal stresses 2.7 To be subjected to aggressive chemicals 2.8 Processing of neat polymers 2.9 References 3. Composition and manufacturing techniques for fibre reinforced polymers 3.1 Introduction 3.2 Materials 3.21 Matrices 3.22 Fibres 3.3 Manufacturing techniques 3.31 Hand lay-up moulding 3.32 Directed fibre spray-up moulding 3.33 Low pressure compression moulding 3.34 High pressure compression moulding 3.35 Pultrusion 3.36 Centrifugal casting 3.37 Filament winding 3.38 Robots 3.39 Remarks about the design of moulds 3.4 References 4. Engineering design with high performance fibre reinforced polymers 4.1 Introduction 4.2 The unidirectional ply (or lamina) 4.21 Stiffness of the unidirectional ply 4.22 Thermal properties of the unidirectional ply 4.23 Failure criteria for the unidirectional ply 4.3 rules fort he design of components made out of high performance fibre reinforced polymers 4.4 Basics of the net theory 4.41 Assumptions and definitions 4.42 Estimation of the fibre forces in a plies 4.5 Basics of the classical laminate theory (CLT) 4.51 Assumptions and definitions 4.52 Elastic constants of multilayer laminate 4.53 Strains and curvatures in a multilayer laminate due to mechanical loading 4.54 Calculation of the stresses in the unidirectional plies due to mechanical loading 4.55 Strains and curvatures in a multilayer laminate due to mechanical and thermal loading 4.56 Calculation of the stresses in the unidirectional plies due to mechanical and thermal loading 4.57 Procedure of stress analysis 4.58 Taking account of the non-linear behaviour of the matrix 4.59 Admissible stresses, evaluation of existing stresses 4.6 Puck’s action plane fracture criteria 4.7 Selected problems of buckling 4.8 Selected problems of fatigue 4.9 References |
| Skript | The script will be distributed at the beginning of the course |
| Literatur | The script is including a comprehensive list of references |