基于MPI的柔性多体系统动力学并行计算

Parallel Computing Research on Flexible Multibody Dynamics Using MPI

研究解决多体系统动力学仿真计算中串行计算速度比较慢的问题。现将MPI(Message Parallel Interface)并行计算环境引入柔性多体系统动力学仿真软件CADAMB(Computer Aided Dynamic Analysis of MultiBody),对其中的单向递推组集建模方法进行了并行化改造,并给出了加速比和各进程效率的估计。结果显示该并行算法能大幅度提高仿真计算的速度。

To solve the problem that simulation speed is very slow in most Muhibody Dynamics software, this paper applied MPI （Message Parallel Interface） in CADAMB which is a flexible Multibody Dynamics software. The paper parallelized the computation model of Forward Recursive Formulation in CADAMB and estimated the acceleration ratio. The result shows that the parallel algorithm largely increases simulation speed.