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© 2020

Temperature-dependent Deformation and Fracture Behavior of a Talcum-filled Co-polymer

Book
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Part of the AutoUni – Schriftenreihe book series (AUS, volume 147)

Table of contents

  1. Front Matter
    Pages I-XXVI
  2. David Degenhardt
    Pages 1-3
  3. David Degenhardt
    Pages 5-7
  4. David Degenhardt
    Pages 9-26
  5. David Degenhardt
    Pages 27-47
  6. David Degenhardt
    Pages 49-70
  7. David Degenhardt
    Pages 71-88
  8. David Degenhardt
    Pages 89-90
  9. David Degenhardt
    Pages 91-92
  10. Back Matter
    Pages 93-121

About this book

Introduction

David Degenhardt develops an elasto-viscoplastic material model in order to predict the temperature and strain rate-dependent deformation and fracture behavior of thermoplastic polymers. The model bases on three supporting ambient temperatures, where a thermoplastic polymer has been characterized profoundly at the stress states 1) uni-axial tension and compression, 2) bi-axial tension and 3) shear. The core of the material model builds a pressure-dependent yield function with a non-associated flow rule. Further, it contains an analytical hardening law and a strain rate-dependent fracture criterion. The model is validated with components subjected to impact loading at different ambient temperatures. The comparison of the simulation and the experiments shows that stiffness, hardening, fractures strain as well as thicknesses can be well captured.

Contents
  • Material Modeling; Yield Functions and Flow Rules
  • Static and Dynamic Material Testing
  • Temperature-dependent Material Model
  • Model Validation with Component Tests
Target Groups
  • Scientists and students in the field of material sciences and simulation
  • Practitioners in industry in the field of material characterization
About the Author 
David Degenhardt is a calculation engineer in the chassis development department of a German automobile manufacturer and earned his doctorate while working at the Technische Universität Carolo-Wilhelmina zu Braunschweig, Germany.

Keywords

Extended Raghava yield function Modified Mohr-Coulomb fracture criterion Experimental challenges in material testing Bi-axial tension tests Design of a new uni-axial tension test specimen Finite-element method Temperature-dependent deformation Fracture behavior Talcum-filled co-polymer Elasto-viscoplastic material Thermoplastic polymers

Authors and affiliations

  1. 1.AutoUniWolfsburgGermany

About the authors

David Degenhardt is a calculation engineer in the chassis development department of a German automobile manufacturer and earned his doctorate while working at the Technische Universität Carolo-Wilhelmina zu Braunschweig, Germany.

Bibliographic information

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