时间迭代步长对单层网壳非线性动力分析的影响
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
在进行地震作用下网壳结构的非线性动力分析及动力稳定分析过程中,不同的计算时间迭代步长对网壳的动力响应有着很大的影响,进而影响到动力稳定临界荷载的判断。针对两个网壳实例就时间迭代步长对其非线性动力响应的影响进行分析比较,在兼顾计算精度及计算量的基础上,提出了针对此类结构非线性动力分析时间迭代步长的选取建议。
In the nonlinear dynamic analysis and dynamic stability analysis of the single-layer lattice shell structures under earthquake loads, the length of the iterative time steps has a certain extent influence to the dynamic response, and therefore affects the judgment of the dynamic stability critical load. In the paper, the comparison and the analysis of the influence of iterative time step to the nonlinear dynamic response are presented based on the numerical analysis results of two lattice shell structures. In consideration of the analysis precision and the time consuming of computer, some suggestions are presented for the choice of the length of iterative time steps in the nonlinear dynamic analysis of the lattice shell structures.
引文
[1] R. W.克拉夫, J.彭津,著.王光远,译.结构动力学[M].北京:科学出版社,1975.
    [2]于建华,谢用九,魏泳涛.高等结构动力学[M].成都:四川大学出版社,2001.
    [3]孙建恒.单层网壳非线性稳定分析的修正切线刚度矩阵[J].结构工程学报,1990,1(3-4):84-93.
    [4]孙建恒,夏亨熹.网壳结构非线性动力稳定分析[J].空间结构,1994,1(1):25-32.
    [5]任小强.边桁架支撑的单层柱面正交异型网壳内力及非线性稳定分析[D].保定:河北农业大学,2001.
    [6]龚曙光.ANSYS工程应用实例解析[M].北京:机械工业出版社,2003.
    [7]徐闻,孙建恒,姚洪涛,等.单层柱面正交异型网壳的动力特性研究[J].河北农业大学学报,2005,28(1):83-88.

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心