Introducing the complex viscoelastic modulus, visco-elastic wave equation has the similar form with elastic wave equation for harmonic wave motion, in case of linear viscoelastic.
在线性粘弹性假设条件下，通过引入复弹性模量，使粘弹性波动方程具有和弹性波动方程类似的形式。
However, the elastic modulus and loss factor of viscoelastic material usually change with frequency, which will cause difficulties in the calculation of structure dynamics.
但是，由于粘弹性材料的弹性模量和损耗因子往往随频率变化，对设计计算造成了一定的困难。
The results indicate that viscoelastic-GK calculation with relaxation of shear modulus and of bulk modulus using the multilayer shell element is the most appropriate method for predicting the warpage.
研究结果表明预测翘曲问题最合适的方法是使用多层壳体元缩减切变模量和体积模量，计算出粘弹性GK。
The results indicate that viscoelastic-GK calculation with relaxation of shear modulus and of bulk modulus using the multilayer shell element is the most appropriate method for predicting the warpage.
研究结果表明预测翘曲问题最合适的方法是使用多层壳体元缩减切变模量和体积模量，计算出粘弹性GK。
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