Micromechanical analysis of the behavior of stiffclay

作     者：Zhen-Yu Yin Ching S. Chang Pierre-Yves Hicher Jian-Hua Wang 

作者机构：Department of Civil Engineering Shanghai Jiao Tong University 200240 Shanghai China Department of Civil and Environmental Engineering University of Massachusetts Amherst MA 01002 USA Research Institute in Civil and Mechanical Engineering UMR CNRS 6183 Ecole Centrale de Nantes BP 92101 44321 Nantes France 

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

年 卷 期：2011年第27卷第6期

页      面：1013-1022页

核心收录：

学科分类：08[工学] 081402[工学-结构工程] 080203[工学-机械设计及理论] 081304[工学-建筑技术科学] 0802[工学-机械工程] 0813[工学-建筑学] 0814[工学-土木工程] 0701[理学-数学] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the Shanghai Pujiang Talent People Project(11PJ1405700) the National Science Funds for Distinguished Young Scholars(51025932) 

主　　题：Stiff clay Destructuration Micromechanics Plasticity Induced anisotropy 

摘      要：Cementations formed in geological timescale are observed in various stiff clays.A micromechanical stress strain model is developed for modeling the effect of cementation on the deformation behavior of stiff *** proposed approach considers explicitly cementations at intercluster contacts,which is different from conventional *** concept of inter-cluster bonding is introduced to account for an additional cohesion in shear sliding and a higher yield stress in normal compression.A damage law for inter-cluster bonding is proposed at cluster contacts for the debonding process during mechanical *** model is used to simulate numerous stress-path tests on Vallericca stiff *** applicability of the present model is evaluated through comparisons between the predicted and the measured *** order to explain the stress-induced anisotropy arising from externally applied load,the evolution of local stresses and local strains at inter-cluster planes are discussed.