autodyn并行计算有什么作用

2025-04-03 16:22:36
推荐回答(1个)
回答1:

Autodyn使用起来比较方便,与Ls-dyna相比,其主要的优缺点为:
(1)AUTODYN相对于LS-DYNA,使用相对简单,学习起来比较容易。
(2)AUTODYN自带材料库,材料参数比较齐全。
(3)AUTODYN二维不支持多cpu并行运算,无法发挥多核处理器的效能,LS-DYNA不存在该问题。
(4)LS-DYNA适合于做碰撞,但是作爆炸,效果不如AUTODYN理想。如果要做接触爆炸和近场爆炸,那么就选AUTODYN,如果想做远场,那就选ABAQUS,精度比DYNA要好。
(5)LS-DYNA以LAGRANGE算法为主,兼有和Euler和ALE算法,而AUTODYN则不同,该程序擅长计算多物质
场,其LAGRANGE算法和Euler算法的功能都很强。
(6)AUTODYN在linu系统下没有图形用户界面,但可以求解,这对随时查看计算结果有影响;LS-DYNA不
存在该问题。(ANSYS13.0开始AUTODYN可以在linux下运行)
(7)AUTODYN并行计算设置较烦,也可能是为了更有效地利用cpu的并行计算能力,而LS-DYNA适合并行计
算设置。
(8) AUTODYN多核处理器支持不理想。在windows平台,四核处理器,运算单个任务CPU利用率可达25%,而
运行3个任务时往往40%都不到。
(9)Autodyn的sph算法只能为1个part,而Ls-dyna不存在该问题。
(10)Autodyna比较贵,Ls-dyna相对便宜,Autodyn国内只有安世亚太公司在卖,Ls-dyna有不少代理公司。

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