首页> 外文期刊>Applied Mathematical Modelling >A new updating method for the damped mass-spring systems
【24h】

A new updating method for the damped mass-spring systems

机译:阻尼质量弹簧系统的新更新方法

获取原文
获取原文并翻译 | 示例
           

摘要

In this paper, we concern the inverse problem of constructing a monic quadratic pencil which possesses the prescribed partial eigendata, and the damping matrix and stiffness matrix are symmetric tridiagonal. Furthermore, the stiffness matrix is positive semi-definite and weakly diagonally dominant, which has positive diagonal elements and negative off-diagonal elements. Based on the solution of the inverse eigenvalue problem, we apply the alternating direction method with multiplier to solve the finite element model updating problem for the serially linked mass-spring system. The positive semi-definiteness of stiffness matrix, nonnegativity of stiffness and the physical connectivity of the original model are preserved. Numerical results show that our proposed method works well.
机译:在本文中,我们关注的是构造具有规定的部分特征数据的单数二次铅笔的逆问题,并且阻尼矩阵和刚度矩阵是对称的三对角线。此外,刚度矩阵是半正定的,对角线为弱对角线,具有正对角线元素和负非对角线元素。在求解特征值反问题的基础上,我们应用了乘数交变方向法,以解决串联质量弹簧系统的有限元模型更新问题。保留了刚度矩阵的正半定性,刚度的非负性和原始模型的物理连通性。数值结果表明,本文提出的方法效果良好。

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