玻璃态聚合物银纹化过程的数值模拟

Numerical Modeling of Crazing Process in Glassy Polymer

银纹化是玻璃态聚合物材料所特有的一种现象。本文在代表体积单元中嵌入能够刻划银纹萌生与生长的银纹单元 ,运用有限元方法对银纹化过程进行了数值模拟。银纹化过程中的最大主应力矢量图说明计算模型以及计算方法是比较合理的。而且 ,本文所揭示出来的银纹化过程的规律与实验中观察到的现象是吻合的。

Crazing is a kind of special nonlinear deformation in polymers. In representative volume element (RVE) of glassy polymer, several craze elements strip are embedded and the crazing model in glassy polymer is simulated with finite element method. The graph of maximum principal stress vector indicates the modeling is appropriate, and the style of crazing progress shows a satisfied agreement with the experimental phenomena.