一种基于有限元分析的杨氏模量的能量等效方法

An energy equivalent method to achieve young's modulus based on FEA

基于能量等效原则,本文提出了一种特定阻尼结构中粘弹性材料等效杨氏模量常值的获得方法。通过有限元优化分析,对比橡胶材料动态杨氏模量和杨氏模量常值在同一阻尼结构的能量特性,从而找到了最能表征粘弹性材料动态杨氏模量的等效杨氏模量常值。经验证,该方法获取的等效杨氏模量常值在能量特性上能很好地反映动态杨氏模量,能为该结构的数值计算和软件仿真提供便利。

Based on energy equivalence principle, a method to achieve the equivalent constant Young＇s modulus for a given damping stucture is presented in this paper. Using finite element analysis, by comparing a structure＇s energy character with dynamic Young＇s modulus and the same structure＇s energy character with a constant Young＇s modulus, it is easy to get an equivalent constant Young＇s modulus which is most closed to dynamic Young＇s modulus of viscoelastic material. It is verified that the equivalent constant Young＇s modulus which is obtained by this method can commendably approximate the dynamic Young＇s modulus＇s energy character and hopefully can benefit software and numerical simulation for the given structure.