基于可变数组管理方法的震塌破坏数值仿真

以弹塑性力学和动力有限元理论为基础,采用动态数组和动态地址管理方法,依据震塌破坏准则,适时判断震塌破坏单元,并相应改变有限元计算区域以及由此产生的自由度、A数组及相关地址的适时改变,对防护结构在爆炸载荷作用下的震塌破坏效应进行了数值仿真研究. 在RSEAP程序的框架基础上,编制了相应的计算程序,并利用该程序对典型的钢筋混凝土板爆炸震塌实验工况进行数值仿真,仿真结果与实验结果的对比表明两者吻合较好.

Numerical Simulation of Spalling Damage Based on the Management Method with Variable Array

Based on elastic-plastic mechanics and dynamic finite-element theory, the management method of dynamic array and dynamic address is proposed. According to spalling failure criteria, spalling damage elements are confirmed in good time and finite element computational domains are changed. Accordingly, degrees of freedom, A array and correlative addresses are changed. Numerical simulation of spalling damage effect of protective structure under explosion loading is carried out. On the basis of RSEAP program and the method above mentioned, a new computational program is programmed for the simulation of spalling damage. Numerical simulation of explosion spalling damage of typical reinforced concrete is accomplished by the agency of the new computational program. The simulation results showed a good agreement with experimental results.