混凝土SHPB试验的数值模拟  

Numerical Simulation of SHPB Experiment for Concrete

作　　者：秦佳俊[1,2] 夏松[2] 陈贵炫[3] 杨富莲[2] QIN Jiajun;XIA Song;CHEN Guixuan;YANG Fulian(Civil Engineering School,Guangzhou University, Guangzhou ,510006,China;Architecture and Civil Engineering School,West Anhui University,Lu’an ,237012, China;Civil and Transportion Engineering School, Guangdong University of Technology,Guangzhou,510006, China)

机构地区：[1]广州大学土木工程学院,广东广州510006 [2]皖西学院建筑与土木工程学院,安徽六安237012 [3]广东工业大学土木与交通工程学院,广东广州510006

出　　处：《安徽建筑大学学报》2016年第6期48-52,共5页Journal of Anhui Jianzhu University

基　　金：安徽省高校自然科学基金(KJ2016A748);六安市定向委托皖西学院市级研究项目(2014LWA005);皖西学院校级自然科学研究项目重点项目(KJ103762015B12)

摘　　要：利用有限元软件ANSYS/LS-DYNA,运用HJC本构模型,对混凝土试件的SHPB试验进行数值模拟,重构了混凝土在低、中、中高以及高应变率下的应力应变曲线,并且对试件的破坏形态进行了模拟。研究表明,HJC模型可以很好地模拟混凝土材料的力学性能,重构的应力应变曲线在曲线形态和峰值应力上均与SHPB试验拟合良好,数值模拟得到的混凝土的破坏形态也与SHPB试验一致,确定该强度混凝土材料HJC本构模型材料参数的方法具有通用性。By using finite element software ANSYS/ls-dyna,the SHPB test for concrete has been numerically simulated by using the HJC model,the stress strain curve of concrete at different strain rates are reconstructed,and the failure patterns of the specimens were simulated.The research shows that the HJC model can well simulate the mechanical properties of concrete,the stress strain curves are in agreement with the SHPB test on the curve shape and the peak stress,and the failure pattern of concrete obtained from the numerical simulation is also consistent with the SHPB test. The method for determining material parameters of HJC constitutive model of concrete material is universal.

关 键 词：混凝土 应力应变曲线 SHPB试验 HJC本构模型 

分 类 号：TU502.6[建筑科学—建筑技术科学]