Rühl A. On the Time and Temperature Dependent Behaviour of Laminated Amorphous Polymers Subjected to Low-Velocity Impact

Springer-Verlag GmbH, Germany, 2017. — 176 p. — (Mechanik, Werkstoffe und Konstruktion im Bauwesen 47) — ISBN: 366254640X.The thesis investigates a polymeric laminate consisting of poly(methyl methacrylate) (PMMA) and thermoplastic polyurethane (TPU) experimentally and numerically with regard to its impact behaviour and applicability.
After a basic characterization of the monolithic materials, PMMA-TPU-PMMA laminates were subjected to impact loadings at velocities up to 5 m/s using threepoint bending and dart impact tests. Based on the experimental basis, different material models for the Finite Element simulation are presented, which are able to capture the time and temperature dependent behaviour of the laminate. Final validation experiments, consisting of head-dummy impacts at 10 m/s on automotive side windows, were conducted for PMMA and the laminate in order to investigate their applicability as glass substitution products.Fundamentals
Experimental Investigation
Material Modelling of PMMA
Material Modelling of TPU
Simulation of PMMA-TPU Laminate
Component Tests and Validation
Summary and Outlook
Appendices
Experiments
Material Modelling