Effects of Temperature and Strain Rate on the Nonlinear Compressive Mechanical Behavior of Polypropylene.

摘要

Material test data are presented for the compressive behavior of polypropylene. Direct compression is emphasized, although several stress relaxation and creep results are included. Tests are performed at atmospheric pressure; strain rates range from .00001 to 100/sec; temperatures are 20,65 and 110/degree/C; true strains to /minus/0.25 are imposed. Results indicate that the stress-strain behavior is highly strain-rate sensitive at all temperatures whereas the elastic modulus drops in magnitude and strain-rate sensitivity at the higher temperatures. 8 refs., 7 figs. (ERA citation 14:028872)