Numerous experimental studies show a marked influence of strain rate on yield and ultimate strengths, strain hardening laws and other parameters of the deformation processes in various materials. Analytical approaches that take into account these strain rate effects are presented in many publications and are being further developed. However, engineering approaches, which describe complex phenomena at a varying strain rate on the basis of experimental and analytical advances, are still underdeveloped. The model of elastic-plastic flow, in which a varying strain rate is a parameter, can fill this gap since it is built on a set of experimental stress-strain curves obtained for different strain rates.
|
