在非线性数值算法基础上,采用水平集方程、动量方程与能量方程进行多物理场全耦合计算的方法,对非对称几何板件的注射-压缩成型过程进行了模拟分析。结果表明,注射-压缩工艺较传统注射工艺能够显著降低制成件收缩率;成型过程中熔体的纤维流线长度与温度变化会对制件收缩率产生影响。较短的纤维流线,较均匀的温度分布能够获得更小、更均匀的收缩率。
Abstract
Based on nonlinear numerical algorithm,the method of the calculation of multiphysics of full-coupled manner by the level-set equation,momentum equation and energy equation was adopted to simulate the injection-compression molding on a non-symmetric geometric plate.The study showed that in comparison with injection molding,the injection-compression molding can greatly reduce the shrinkage of the product.In addition,during the forming process the length of the fiber flow line and the temperature change can affect the shrinkage of the product.Shorter fiber flow line,more even temperature distribution can lead to lower and more even shrinkage distribution.
关键词
注射-压缩成型 /
数值模拟 /
非线性 /
纤维流线 /
收缩率
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Key words
injection-compressio /
numerical simulation /
nonlinear /
fiber flow line /
shrinkage
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参考文献
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脚注
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基金
国家自然科学基金(50675080)
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