基于 Moldflow 的汽车中控台框架翘曲变形分析及优化

Analysis and Optimization of Warping Deformation of Automotive Center Console Frame Based on Moldflow

以某汽车中控台框架为研究对象,测量试模样品发现其翘曲变形量超过了装配要求。通过Moldflow软件模拟了该塑件实际的注塑过程,翘曲变形量的模拟值与实测平均值的最大误差为5.98%,发现该塑件翘曲变形的主要因素为冷却不均和收缩不均。本文在原物料中添加质量分数为25%的玻璃纤维以及优化工艺参数后,翘曲变形量的模拟值与初始方案相比降低了86.22%。试模验证表明,优化后的翘曲变形量模拟值与实测平均值的最大误差为4.35%,证明了Moldflow软件模拟分析的准确性。试模后各检测点的最大翘曲变形量降到了1.6 mm以下,较优化之前降低了80%以上,为类似大型复杂注塑件的翘曲变形分析及优化提供了思路。

Taking a certain cars central console frame as the research object,it was found that the warping deformation of the sample exceeded the assembly requirements.The actual injection molding process of the plastic part was simulated via Moldflow software.The maximum error between the simulated value and the average measured value of the warping deformation was 5.98%.It was discovered that the main factors leading to the warping deformation of the plastic part were uneven cooling and shrinkage.In this study,glass fibers with a mass fraction of 25%were added to the raw materials,and the process parameters were optimized.The results show that the simulated value of the warping deformation decreases by 86.22%compared to the initial one.Prototype verification indicates that the maximum error between the simulated value and the average measured value of the optimized warping deformation is 4.35%,proving the accuracy of the Moldflow software simulation analysis.After prototyping,the maximum warping deformation of each measurement point is reduced to less than 1.6 mm,which is reduced by more than 80%compared with the initial one,providing insights for the analysis and optimization of warping deformation for similar large and complex injection-molded parts.