...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal for Numerical Methods in Engineering >Wave finite element-based superelements for forced response analysis of coupled systems via dynamic substructuring
【24h】

Wave finite element-based superelements for forced response analysis of coupled systems via dynamic substructuring

机译：基于波有限元的超单元，用于通过动态子结构进行耦合系统的强制响应分析

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The wave finite element (WFE) method is used for assessing the harmonic response of coupled mechanical systems that involve one-dimensional periodic structures and coupling elastic junctions. The periodic structures under concern are composed of complex heterogeneous substructures like those encountered in real engineering applications. A strategy is proposed that uses the concept of numerical wave modes to express the dynamic stiffness matrix (DSM), or the receptance matrix (RM), of each periodic structure. Also, the Craig-Bampton (CB) method is used to model each coupling junction by means of static modes and fixed-interface modes. An efficient WFE-based criterion is considered to select the junction modes that are of primary importance. The consideration of several periodic structures and coupling junctions is achieved through classic finite element (FE) assembly procedures, or domain decomposition techniques. Numerical experiments are carried out to highlight the relevance of the WFE-based DSM and RM approaches in terms of accuracy and computational savings, in comparison with the conventional FE and CB methods. The following test cases are considered: a 2D frame structure under plane stresses and a 3D aircraft fuselage-like structure involving stiffened cylindrical shells. Copyright (C) 2015 John Wiley & Sons, Ltd.
机译：波动有限元（WFE）方法用于评估涉及一维周期性结构和耦合弹性结的耦合机械系统的谐波响应。所关注的周期性结构由复杂的异构子结构组成，例如在实际工程应用中遇到的那些子结构。提出了一种使用数值波模式的概念来表示每个周期结构的动态刚度矩阵（DSM）或接收矩阵（RM）的策略。同样，使用Craig-Bampton（CB）方法通过静态模式和固定接口模式对每个耦合结建模。一个有效的基于WFE的标准被认为是选择最重要的结点模式。通过经典的有限元（FE）组装程序或域分解技术，可以考虑几种周期性结构和耦合结。与常规的FE和CB方法相比，进行了数值实验以突出基于WF​​E的DSM和RM方法在准确性和计算节省方面的相关性。考虑以下测试用例：平面应力下的2D框架结构和涉及刚性圆柱壳的3D飞机机身样结构。版权所有（C）2015 John Wiley＆Sons，Ltd.

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号