J. Phys. IV France
Volume 04, Numéro C8, Septembre 1994EURODYMAT 1994 - 4th International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading
|Page(s)||C8-765 - C8-770|
J. Phys. IV France 04 (1994) C8-765-C8-770
Influence of inertial and thermal effects on the dynamic growth of voids in porous ductile materialsJ. Zheng, Y.L. Bai and Z.P. Wang
Institute of Mechanics, Chinese Academy of Science, China
The influence of inertial, thermal and rate - sensitive effects on the void growth at high strain rate in a thermal - viscoplastic solid is investigated by means of a theoretical model presented in the present paper. Numerical analysis of the model suggests that inertial, thermal and rate - sensitive effects are three major factors which greatly influence the behavior of void growth in the high strain rate case. Comparison of the mathematical model proposed in the present work and Johnson's model shows that if the temperature - dependence is considered, material viscosity η can take the experimentally measured values.
© EDP Sciences 1994