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塑料制品残余应力的光弹测量和数值模拟 被引量:6

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摘要 聚碳酸酯塑件广泛应用于光学、光电和电子领域,但残余应力可导致最终产品光学性能的下降。相对于聚甲基丙烯酸甲酯,残余应力对聚碳酸酯注塑件有更明显的影响。本文首先用偏光设备观察了透明聚碳酸酯注塑件残余应力的分布,以此来研究流动残余应力和热残余应力的影响以及它们之间的相互作用。然后基于光弹实验的结果,用数值方法研究了不同成型条件下的流动残余应力和热残余应力。试验获得的条纹数目和条纹形式,和模拟的结果一致,表明了流动方式、不平衡的温度分布导致聚碳酸酯注塑件产生残余应力的产生。
出处 《塑胶工业》 2007年第4期12-16,共5页
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