数值分析中粘弹材料剪切模量松弛函数的拟合方法（The fitting method of shear modulus relaxation function of viscoelastic material in numerical analysis is presented）.doc

数值分析中粘弹材料剪切模量松弛函数的拟合方法（The fitting method of shear modulus relaxation function of viscoelastic material in numerical analysis is presented） The fitting method of shear modulus relaxation function of viscoelastic material in numerical analysis is presented The FITTING METHOD OF SHEAR MODULUS RELAXATION FUNCTION FOR elastic elastic MATERIALS IN NUMERICAL ANALYSIS Handsome words, jun ji an (college of mechanical and electrical engineering, central south university, changsha 410083) SHUAI CiJunDUAN JiAnWANG Jiong (College ofMechanical and Electrical Engineering, Central South University, Changsha410083, China) In the finite element analysis of viscoelastic materials, the shear modulus relaxation function obtained by experience or experiment should be applied to the corresponding viscoelastic physical model. In this paper, the empirical shear modulus relaxation function kohlrausch-william Watts (KWW) equation, based on Matlab software, is used to interpolation of linear equations In this paper, the generalized Maxwell model of viscoelastic materials is proposed to obtain the calculation method of Maxwell model parameters for viscoelastic finite element analysis. And in 1 050 ℃ of viscoelastic fiber glass, for example, a set of calculation example is given. Keywords viscoelastic material shear modulus relaxation function Maxwell model parameters fitting Middle image classification number O345 TB115 AbstractWhile adopting finite elementmethod to analyze the stress and strain of viscoelastic material, the data of relaxationmod - Ulus belong derived from experiments or experiences should be fitted for the its corresponding viscoelastic physical model, -based on the Mat Lab software, experimental shear modulus relaxation function of viscoelastic materials is fitted to the generalizedMaxwell model by means The method of interpolation method of linear equation group And have drawn the Maxwell model parameters computing method used for elastic elastic Finite element analysis, Ta