摘要
以Ｌｅｍａｉｔｒｅ的４个基本要素，即损伤变量、各向同性损伤假设、有效应力、应变等效性假设，以及热力学和损伤只发生在拉伸应力的塑性变形下的假设为基础，提出了一个韧性损伤准则，它能解释自由均匀镦粗的自由表面无裂纹的现象。
Based on Lemaitre's four basic elements, such as damage variable, hypothesis of isotropy, concept of effective stress and hypothesis of strain equivalence, and thermodynamics as well, and also on the author's hypothesis that damage can only be developed on plastic deformation with tensile stress, a new model of isotropic ductile damage was derived. The new model can explain that on the free surface of free homogeneous upsetting there is no ductile fracture.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
1999年第1期35-38,共4页
The Chinese Journal of Nonferrous Metals
