The elastoplastic constitutive model of rock and its numerical implementation based on unified strength theory

被引：0
|
作者：
Hu X. [1 ,2 ]
Li K. [1 ]
Qu S. [1 ]
机构：
[1] School of civil and Resource Engineering, University of Science and Technology Beijing, Beijing
[2] Department of Civil Engineering, Monash University, Merlbour
来源：
Baozha Yu Chongji/Explosion and Shock Waves | 2019年 / 39卷 / 08期
关键词：
Constitutive model; Elastoplastic; Strain rate effect; Unified strength theory;
D O I：
10.11883/bzycj-2019-0044
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
Based on the theory of elastoplastic mechanics, the rock elastoplastic constitutive model considering hardening/softening behavior and strain rate effect is established with the uniform strength criterion as the yield criterion. Fortran language was used to program the elastoplastic constitutive model through the user-defined material interface (Umat) of LS-DYNA. The elastoplastic constitutive model is verified by uniaxial compression test and SHPB test of rock, and the results show that the elastoplastic constitutive model can reflect the mechanical behavior of rock under quasi-static and dynamic conditions. © 2019, Editorial Staff of EXPLOSION AND SHOCK WAVES. All right reserved.
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