摘要
根据透明平板注射成型的特点,建立了残余应力计算模型和翘曲计算模型,采用HsCAE软件的相应模块对大尺寸透明平板注射过程中的残余应力、翘曲变形及收缩进行了分析。结果表明,平板边缘的残余应力和厚向收缩率较大;而中间区域的残余应力和厚向收缩率小且比较均匀;平板中间区域的翘曲变形量最大,且沿平板平面向四周均匀递减。同时进行了平板的注射成型试验,通过实测平板的外形尺寸进一步验证了模拟结果。
Numerical models of residual stresses and warpage were established upon the characteristics of injection molding for transparent panel. HsCAE software modules were adopted to analyze residual stresses, warpage and shrinkage of injection molded large-size transparent panel. The results showed that residual stresses and thickness shrinkage in central zone of the transparent panel were much smaller and evener than in the panel edge, and warpage reached its maximum in pane centre and decreased uniformly from the centre to the surroundings. Panels were injection molded, and the test results verified the numerical simulations.
出处
《工程塑料应用》
CAS
CSCD
北大核心
2008年第9期30-33,共4页
Engineering Plastics Application
基金
国家高技术研究发展计划(863)项目(2007AA03Z534)
总装预研项目(51312020114)
关键词
注射成型
残余应力
收缩率
翘曲
injection molding, residual stress, shrinkage, warpage
