A MODIFIED MSE METHOD FOR VISCOELASTIC SYSTEMS - A WEIGHTED STIFFNESS MATRIX APPROACH

被引：17

作者：

HU, BG

DOKAINISH, MA

MANSOUR, WM

机构：

[1] McMaster University, Hamilton, ON

来源：

JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME | 1995年 / 117卷 / 02期

关键词：

Algorithms - Approximation theory - Computer simulation - Damping - Degrees of freedom (mechanics) - Eigenvalues and eigenfunctions - Error analysis - Finite element method - Sandwich structures - Stiffness matrix - Vibrations (mechanical) - Viscoelasticity;

D O I：

10.1115/1.2873923

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The conventional Modal Strain Energy method (MSE is briefly discussed. Several indices are proposed to characterize a viscoelastically damped system. An Overall Error Index is proposed to assess the accuracy of the solution. A Modified MSE method is developed for a better evaluation of modal damping. Instead of neglecting the damping stiffness matrix in the determination of the eigenvectors, as is the case in the conventional MSE method the authors used a weighted matrix to solve a real eigenvalue problem. With such modification the estimation of the modal damping is often improved. Numerical simulation of multi degree-of-freedom systems are reported using the proposed Modified MSE method and the indices.

引用

页码：226 / 231

页数：6

共 15 条

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