Portal de Periódicos da CAPES

Deformation behaviour of a strain rate sensitive block under plane strain tension.

1988; Japan Society Mechanical Engineers; Volume: 54; Issue: 501 Linguagem: Inglês

10.1299/kikaia.54.1124

0387-5008

Yoshihiro TOMITA, Akio Shindo, Seiji Asada, Hirokazu Gotoh,

High-Velocity Impact and Material Behavior

A constitutive equation with one to one relation between the stress rate and the visco-plastic strain rate is derived. It includes strain rate sensitive and insensitive J2 flow to a deformation type constitutive equation. The finite element method in conjunction with the proposed constitutive equation and tangent modulus method is applied to the analysis of the deformation of a strain rate sensitive block subjected to tension under plane strain conditions. The influence of the type of constitutive equation, the strain rate sensitivity and the deformation rate upon the global and local deformation behaviour is investigated. The results show that the type of the constitutive equation has remarkable effect on the deformation behaviour of a block with weak strain rate sensitivity.