Unified plastic modulus in the bounding surface plasticity model

作     者：XIAO Yang LIU Han Long LIU Hong SUN Yi Fei 

作者机构：State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing University Key Laboratory of New Technology for Construction of Cities in Mountain Area Chongqing University College of Civil Engineering Chongqing University Faculty of Engineering and Information Sciences University of Wollongong 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2016年第59卷第6期

页      面：932-940页

核心收录：

学科分类：08[工学] 080102[工学-固体力学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the 111 Project(Grant No.B13024) the National Natural Science Foundation of China(Grant No.51509024) the Fundamental Research Funds for the Central Universities(Grant No.106112015CDJXY200008) 

主　　题：bounding surface strength criterion plastic modulus dilatancy peak-stress ratio 

摘      要：A unified plastic modulus parameter for the bounding surface plasticity model is introduced in order to maintain the identical responses of modeling for both the two-dimensional and three-dimensional stress space with the same model parameters. Also discussed are the influences of the plastic modulus parameter on the stress-strain relationship and the plastic modulus. The model is more sensitive in modeling the stress strain responses when the plastic modulus parameter is small. The plastic modulus parameter has a great influence on the magnitude of the plastic modulus, especially at the initial loading stage. The plastic modulus asymptotically tends to zero at the end of loading.