viscoelastic body meaning in English

粘弹体
粘弹性体
黏弹性体

In the positive - issue research of bird impact , the thesis carefully explores the basic theories , finite element numerical method and key techniques of the solution process in ls - dyna3d software system for contact - impact issue of viscoelastic bodies at large deformation . the well - chosen cases examine the accuracy of solutions in ls - dyna3d for large deformation impact issues . under the proof work , the incremental constitutive equation of bilinear and nonlinear viscoelastic materials are derived , coded and verified in ls - dyna3d
在鸟撞正问题的研究中，本文详细推导了大变形粘弹性接触-碰撞有限元分析的基本理论、数值计算方法、求解过程、关键技术以及上述内容在ls - dyna3d中的具体应用，算例考察了ls - dyna3d在求解碰撞以及大变形问题上的计算精度，同时推导了线弹性材料、双线性弹塑性材料以及非线性粘弹性材料增量法迭代方程，编制了相应的用户自定义材料子程序，并进行了子程序验证。