摘要
为了对活性粉末混凝土(RPC)材料hopkinson压杆冲击压缩试验进行数值模拟分析,在有限元计算中采用LS-DYNA软件并引入Holmquist-Johnson-Cook累计损伤材料模型以描述钢纤维混凝土的非线形变形。该模拟建立了初始条件改变与最终结果的关系,再现冲击过程中微秒级的应力脉冲传播的瞬态过程与应力变化,并分析了RPC材料高速冲击时应变率变化和横向约束对该材料冲击抗压强度的影响。
In order to give numerical simulation and analysis of RPC material＇s Hopkinsonpressure bar shock compression test, LS-DYNA software and Holmquist Johnson Cook cumulative damage model are introduced to describe nonlinear deformation. This simulation establish the relation between initial factor and final result, reappear the stress propagation and change in microsecond slot and analysis the influence of the strain ratio change and lateral comfinement to the Compression Strength.
出处
《工程建设与设计》
2007年第8期34-38,共5页
Construction & Design for Engineering
