岩石材料应变软化模型及有限元分析  

Strain Softening Model of Rock Material and Associated Finite Element Analysis

作　　者：阎金安[1] 张宪宏[2] 

机构地区：[1]中科院武汉岩土力学所 [2]清华大学

出　　处：《岩土力学》1990年第1期19-27,共9页Rock and Soil Mechanics

基　　金：国家教委基金

摘　　要：本文应用弹塑性理论,根据岩石的应力应变关系、峰值强度、残余强度和岩石材料的脆性特性,建立了理想的应变软化模型,并提出了相应的加载准则。文中提出的模型计算方便,所用参数简单,物理意义明确,便于编制有限元程序。Based on the stress-strain relationship and the properties of peak strength, residual strength, and britleness of rock material, a perfect strain-softening model and related loading criteria are proposed by using the theory of elasto-plasticity. The physical concepts of this model are very clear with simple parameters, which is convenient for numerical analysis including finite element analysis.

关 键 词：岩石材料 应变软化模型 有限元分析 加载准则 屈服函数 

分 类 号：TU45[建筑科学—岩土工程]