【摘要】 为了分析核电站复杂结构地震动态响应,以MPI作为基本并行编程环境,在LINUX操作系统下,开发了核电站结构地震动态响应的并行有限元计算程序。该程序采用黏弹性边界模拟外行波向远域地基的辐射,方程的求解采用时域显式解法,能够模拟包含各类静动荷载以及温度、接触等因素作用下的结构响应。经算例验证,该程序正确可靠。利用该程序对某核电站取水口建筑物进行了动态响应分析,并与ANSYS软件的分析进行比较,所花费时间从单机串行程序的20h40min减少到并行程序下的2h15min。结果证明,该并行程序具有较高的并行度以及良好的并行效率。更多还原

【Abstract】 A parallel computation finite element method(FEM) program for nuclear power station structure dynamic response was developed with the LINUX operating system using the message passing interface(MPI) as the parallel computation environment to analyze nuclear power station complex structure earthquake dynamic response.The viscous-spring boundary condition was used to simulate the outward wave in the program with the explicit formulation in the time domain used to solve the equations,which can simulate the structural response on multiple factors including some static and dynamic loads,the temperature change and the contact.Tests show that the program is correct and reliable.The parallel computing program was then used to analyze the dynamic response of the water intake building of a nuclear station compared with the analyses using the ANSYS software with the computation time reduced from 20 h and 40 min under the single serial computer condition to 2 h and 15 min under the parallel computer condition.The results indicate that the parallel computation program has excellent parallelism degrees and efficiencies.更多还原