• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>4th International Conference on Structural Dynamics Vol.1, Sep 2-5, 2002, Munich, Germany >Modified Modal Methods for Calculating Eigenpair Sensitivity of Asymmetric Systems
【24h】

Modified Modal Methods for Calculating Eigenpair Sensitivity of Asymmetric Systems

机译：计算非对称系统本征对灵敏度的改进模态方法

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

It is well known that many real systems have asymmetric mass, damping and stiffness matrices. In this case, the method for calculating eigenpair sensitivity is different from that of symmetric system. To determine the derivatives of the eigenpairs in asymmetric damped case, a modal method was recently developed by Adhikari. When a dynamic system has many degrees of freedom, only a few lower modes are available, and because the higher modes should be truncated to use the modal method, the errors may become significant. In this paper a procedure for determining the sensitivities of the eigenpairs of asymmetric damped system using a few lowest set of modes is proposed. Numerical examples show that proposed method achieves better calculating efficiency and highly accurate results when a few modes are used.
机译：众所周知，许多实际系统具有不对称的质量，阻尼和刚度矩阵。在这种情况下，本征对灵敏度的计算方法不同于对称系统。为了确定不对称阻尼情况下本征对的导数，Adhikari最近开发了一种模态方法。当动态系统具有许多自由度时，只有少数几个较低的模式可用，并且由于较高的模式应被截断才能使用模态方法，因此误差可能会变得很大。在本文中，提出了使用几个最低模式集确定非对称阻尼系统本征对灵敏度的方法。数值算例表明，在几种模式下，该方法具有较好的计算效率和较高的精度。

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