翘曲(warpage)是塑件未按照设计的形状成形，却发生表面的扭曲，塑件翘曲导因于成形塑件的不均匀收缩。假如整个塑件有均匀的收缩率，塑件变形就不会翘曲，而仅仅会缩小尺寸；然而，由于分子链/纤维配向性、模具冷却、塑件设计、模具设计及成形条件等诸多因素的交互影响，要能达到低收缩或均匀收缩是一件非常复杂的工作。
misc. bow and twist
The results showed that the warpage was mainly caused by GF orientation; the disortion degree could be decreased effectively by increasing part thickness or mould gates.
结果表明,GF的取向是影响PA66/GF注射成型制品翘曲变形的主要原因;增加制品厚度或增设浇口均可有效减小制品的翘曲变形。
参考来源 - 玻璃纤维增强PA66制品翘曲变形的研究Theoretical analysis shows that the accuracy of this method is between one-point quadrature and full integration. For flat element with minor warping, the method is in the same way as full integral calculation.
理论分析表明该方法的精度介于一点积分和全积分之间,对于翘曲小的单元该方法等同于全积分计算方法。
参考来源 - 汽车碰撞仿真中沙漏控制算法研究·2,447,543篇论文数据，部分数据来源于NoteExpress
应用推荐