A THERMO-PLASTIC/VISCOPLASTIC DAMAGE MODEL FOR GEOMATERIALS

作     者：Hui Zhou Dawei Hu Fan Zhang Jianfu Shao 

作者机构：State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil Mechanics Chinese Academy of Sciences Wuhan 430071 China LML UMR 8107 CNRS-University of Lille I Villeneuve d＇Aseq France School of Civil Engineering and Architecture Hubei University of Technology Wuhan 430068 China 

出 版 物：《Acta Mechanica Solida Sinica》 (固体力学学报（英文版）)

年 卷 期：2011年第24卷第3期

页      面：195-208页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 082503[工学-航空宇航制造工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0825[工学-航空宇航科学与技术] 

基　　金：Project supported by the National Natural Science Foundation of China(NSFC) (Nos. 10772190 50979104 and 51009132) 

主　　题：thermo-plastic/viscoplastic damage coupled mechanical model geomaterial rocksalt 

摘      要：A thermo-plastic/viscoplastic damage coupled model was formulated to describe the time independent and time dependent behaviors of geomaterials under temperature effect. The plastic strain was divided into instantaneous plastic strain and creep plastic strain. To take temperature effect into acconnt, a temperature variable was introduced into the instantaneous and creep plastic behavior descriptions and damage characterization, and a linear thermal expansion law was used in constitutive equation formulation. According to the mechanical behavior of rock salt, a specific model was proposed based on the previous model and applied to Avery rock salt, in which the numerical results obtained from our model had a good agreement with the data from experiments.