Warpage prediction of the injection-molded strip-like plastic parts

查看全文 作　　者：Chaofang [1]Wang;Ming [1]Huang;Changyu [1]Shen;Zhenfeng [1]Zhao

机构地区：[1]National Engineering Research Center for Advanced Polymer Processing Technology,Zhengzhou University

出　　处：《Chinese Journal of Chemical Engineering》索引2016年第24卷第5期,共6页

基　　金：Supported by the Key Program of National Natural Science Foundation of China(11432003);the Key Research Project for Henan Universities(15A430009) 摘　　要：For most strip-like plastic injection molded parts,whose cross section size is much smaller than their length,the traditional Hele-Shaw model and three-dimensional model do not work well in the prediction of the warpage because of their special shape.A new solution was suggested in this work.The strip-like plastic part was regarded as a little-curved beam macroscopically,and was divided into a few one-dimensional elements.On the section of each elemental node location,two-dimensional thermal finite element analysis was made to obtain the nonuniform thermal stress caused by the time difference of the solidi fication of the plastic melt in the mold.The stress relaxation,or equivalently,strain creep was dealt with by using a special computing model.On the bases of in-mold elastic stress,the final bending moment to the beam was obtained and the warpage was predicted in good agreement with practical cases. 关键词：变形预测翘曲变形塑料件注射成型有限元分析特殊形状三维模型节点位置

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Warpage prediction of the injection-molded strip-like plastic parts

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引证文献(9)

耦合文献(66)

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