PLASTICITY THEORY FOR POROUS SOLIDS
PLASTICITY THEORY FOR POROUS SOLIDS
复制标题
DOI：
10.1016/0020-7403(72)90063-x
复制
发表时间：
1972-01-01
影响因子：
7.3
通讯作者：
GREEN, RJ
中科院分区：
文献类型：
--
作者：
GREEN, RJ
发展了一种被大量裂纹或空洞削弱的固体的塑性理论。这种处理是完全各向同性的，适用于空洞接近球形或裂纹方向完全随机的地方。利用SIMPLE模型，给出了以含气率为参数的二阶屈服面的显式表达式。所得到的本构关系为亚弹性本构关系，并给出了简单算例。文中还讨论了变形理论的近似表达式。
A plasticity theory is developed for a solid weakened by numerous cracks or voids. The treatment is completely isotropic and would be suitable whenever the voids are nearly spherical or where the direction of cracks is completely random. Using simple models an explicit representation for a second-order yield surface parameterized by the void fraction is presented. The resulting constitutive law is shown to be of the hypoelastic type and simple examples are treated. An approximate expression for a deformation theory is also discussed.