网络并行计算在轨道结构动力分析中的应用

针对车辆-轨道结构动力分析问题，提出了一种基于网络并行计算环境的并行求解方法．考虑车辆和轨道结构特征，建立车辆-轨道结构动力分析模型，推求动力响应微分方程．针对推导的微分方程，改进串行求解算法，提出一种宏流水并行算法．针对算法的性质分析了该算法的适用范围，并从理论上分析了最佳节点机个数和最大加速比．考虑车辆通过轨道不平顺情况，实现了求解轨道结构动力响应的宏流水并行程序．分别在工作站和个人计算机组成的网络并行环境中，测试了提出的宏流水算法性能．实验结果表明，宏流水并行算法可以获得良好的加速比．

Application of Network Parallel Computing to Dynamic Analysis for Track Structure

A parallel method was presented for solving the problem of vehicle-track dynamics in the network parallel environment. A vehicle-track dynamic system model was established where the characteristics of the vehicle and track are considered. A macro-pipelining parallel algorithm was proposed for the deduced differential equation, which is improved upon the traditional serial algorithm. The applicability of the algorithm was discussed, and the optimal number of hosts and the maximum speedup were analyzed theoretically. Considering the track irregularity, the macro-pipelining parallel program was implemented for solving the problem of vehicl-track dynamics. The performance of the presented algorithm was tested in network parallel environments, which consist of workstations and personal computers respectively, and the experimental results indicate that it can obtain a high speedup.