基于动态子模型法的结构动响应预示方法

发布时间：2018-04-26 06:26

本文选题：子模型法 + 局部响应　；参考：《东南大学学报(自然科学版)》2017年02期

【摘要】：研究了基于动态子模型法的结构动响应预示方法基本理论,并建立了可应用于复杂切割边界条件下的匹配插值方法.首先以壳-壳及壳-体2种子模型为研究对象,探究动态子模型法在2种模型中的动响应分析精度及计算效率.以复杂卫星模型为研究对象,验证了动态子模型法在复杂结构中的应用性.研究结果表明:在保证局部运算精度的情况下,子模型法可以极大幅提高运算效率;壳-壳子模型法和壳-体子模型法通过1层切割边界节点和3层切割边界节点即可保证较高响应预示精度;在复杂结构中整体模型网格与子模型网格大小相差较大的情况下,子模型法仍能获得较理想的响应预示结果.
[Abstract]:The basic theory of structural dynamic response prediction method based on dynamic submodel method is studied, and a matching interpolation method which can be applied to complex cutting boundary conditions is established. Firstly, the dynamic response analysis accuracy and computational efficiency of the dynamic submodel method in the two models are studied by taking the shell-shell and shell-body 2 seed model as the research object. The application of the dynamic submodel method in complex structures is verified by taking the complex satellite model as the research object. The results show that the submodel method can greatly improve the operation efficiency under the condition of guaranteeing the local operation accuracy. The shell submodel method and the shell body submodel method can ensure high response prediction accuracy by cutting the boundary nodes at layer 1 and cutting the boundary nodes at three layers, and in the case of large difference between the mesh size of the whole model and that of the submodel in complex structures, The submodel method can still obtain a better prediction result of response.
【作者单位】：东南大学土木工程学院;东南大学机械工程学院;
【基金】：国家自然科学基金资助项目(11402052,11572086) 教育部新世纪优秀人才支持计划资助项目(NCET-11-0086) 江苏省自然科学基金资助项目(BK20140616)
【分类号】：TB115

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