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提出一种用于结构地震反应分析的并行计算方法,此方法将被分析的整体结构划分为多个子结构进行并行计算,计算中考虑子结构间的相互作用。此系统中的核心是协调器,用于保证各子结构边界处的变形协调与力平衡。协调器基于柯西-牛顿迭代算法,通过修正边界处的不平衡力与刚度矩阵得到精确的位移数值解。此方法的特点是各子结构完全独立,相互之间只通过标准数据输入与输出接口传递力与位移。以一个包括四个塔楼的复杂结构为例验证了此方法的有效性。该复杂结构被划分为4个子结构进行并行计算,分析结果表明该并行计算方法对于动力弹性时程分析问题可以得到与整体分析一致的解,对于动力弹塑性时程分析问题,当步长足够小的时候,可得到具有足够精度的解。
A parallel computing method for structural seismic response analysis is proposed. This method divides the whole structure to be analyzed into several substructures for parallel computing, and considers the interactions among the substructures. The core of this system is the coordinator, which is used to ensure the deformation coordination and balance of forces at the boundaries of substructures. Based on the Cauchy-Newton iterative algorithm, the coordinator obtains accurate displacement numerical solutions by correcting the imbalance force and stiffness matrix at the boundary. The characteristic of this method is that all substructures are completely independent and transmit force and displacement to each other only through standard data input and output interfaces. The effectiveness of this method is verified by an example of a complex structure with four towers. The complex structure is divided into four sub-structures for parallel computation. The analysis results show that the parallel computation method can obtain the same solution as the overall analysis for the dynamic elastic-time-history problem. For the time-history analysis of dynamic elasto-plastic time-history problem, , You get the solution with sufficient accuracy.