为预测注塑成型中短纤维取向分布,提出了在模拟分析中采用RSC纤维取向预测模型对纤维取向分布进行预测的方法.基于RSC取向模型,通过第二顺序张量aij对三维取向分辨率进行描述,采用Orthotropic闭合近似模型对RSC模型进行求解.采用MoldFlow软件对RSC模型的纤维取向分布进行了模拟,分析了相互作用系数Ci及标量因子k对纤维取向的影响.并获得了纤维取向随空间、时间的取向规律——沿宽度方向,两端面的取向要大于中心层,并且端面在开始阶段就能达到很高的纤维取向;沿流动方向,在浇口及充填末端,纤维取向都呈下降趋势,而中间部分则有所增加.
参考文献
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