摘要
在岩石材料非均匀特性的基础上,建立了弹塑性概率材料本构.认为材料单元的切线模量与破坏强度都是服从二参数weibull分布的随机量,通过用户材料子程序将该本构导入到LS-DYNA3D中,推导了程序流程,分析了导入过程中的关键技术.算例验证表明,应用该本构模拟得出的现象与实验观测完全一致, 这是确定性本构无法实现的.
Considering the heterogeneous property of rock mass, a statistical constitutive model is developed and is implemented in LS-DYNA by using the user denned material subroutine. In the constitutive model of the rock mass, a two parameter Weibull's distribution is used to simulate the statistical properties of the tangential modulus and the strength of the rock mass. The rationality of the model is demonstrated by a numerical test.
出处
《力学与实践》
CSCD
北大核心
2005年第3期47-50,共4页
Mechanics in Engineering
