摘要
将 ZN- 1粘弹性材料的 GHM模型与工程上常用的有限元方法相结合 ,引入耗散自由度 ,将由于 ZN- 1型粘弹性材料导致的非线性微分方程转化为一般的二阶定常线性系统模型 ;并将 GHM模型与最常用的标准线性模型、分数导数模型进行比较 ,结果表明本研究提出的确定
The GHM(Golla Hughes McTavish) model of ZN 1 Viscoelastic Material is combined with finite element method (FEM), which is the most frequently used method in Engineering. It can approach time consuming iteration in solving model parameters and responses by introducing dissipation coordinates . The parameters of GHM model are determined by nonlinear curve fitting in complex frequency domain. This is converted into nonlinear optimization problem with constrained condition. The results show that the method proposed in the present paper to determine the parameters of GHM model is correct, simple and effective to employ GHM model to perform dynamic analysis.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2002年第2期92-95,共4页
Rare Metal Materials and Engineering
基金
National Defence Science Key L aboratory Foundation(JS5 2 .4 .3)
关键词
GHM模型
有限元
粘弹性材料
GHM model
finite element method
viscoelastic material
