汽车塑料油底壳注塑成型数值模拟与结构优化研究
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摘要
根据汽车油底壳的结构特征和复合材料结构设计原则对塑料油底壳进行三维造型,并基于Abaqus有限元分析软件对塑料油底壳的加强筋结构进行静力分析。结合塑料油底壳的实际应用情况优化出合理的加强筋结构;基于Moldflow软件,运用热流道顺序阀的方式对塑料油底壳进行注塑成型模拟;通过正交试验分析各顺序阀的开启时间、模具温度、熔体温度和注射压力对塑料油底壳边翘曲的影响;运用极差分析和方差分析对影响塑料油底壳边翘曲的各因素进行分析。结果表明,顺序阀2的开启时间对塑料油底壳的边翘曲影响最显著,模具温度次之,且其他因素对边翘曲也有一定的影响。
Three-dimensional model of plastic oil sump was built according to the structural characteristics of oil sump and the structural design principle of composite material. Static analysis of stiffener structure of plastic oil sump was carried out based on Abaqus finite element analysis software.Reasonable stiffener structure was optimized by combining with the actual application of plastic oil sump. Based on Moldflow software, the injection molding simulation of plastic oil sump was carried out by means of hot runner sequential valve. The influences of opening time, mould temperature, melt temperature, and injection pressure of sequential valve on the edge warpage of plastic oil sump were analyzed by orthogonal tests. The result indicates that the opening time of sequential valve 2 has the most significant effect on the edge warpage of plastic oil sump, followed by the die temperature, and other factors also show some certain influences on the edge warpage.
Three-dimensional model of plastic oil sump was built according to the structural characteristics of oil sump and the structural design principle of composite material. Static analysis of stiffener structure of plastic oil sump was carried out based on Abaqus finite element analysis software.Reasonable stiffener structure was optimized by combining with the actual application of plastic oil sump. Based on Moldflow software, the injection molding simulation of plastic oil sump was carried out by means of hot runner sequential valve. The influences of opening time, mould temperature, melt temperature, and injection pressure of sequential valve on the edge warpage of plastic oil sump were analyzed by orthogonal tests. The result indicates that the opening time of sequential valve 2 has the most significant effect on the edge warpage of plastic oil sump, followed by the die temperature, and other factors also show some certain influences on the edge warpage.
引文
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[3]周绍荣.塑料在汽车工业中应用的发展趋势[J].商用汽车,2005(10):94-96.
[4]王琱,李伟.现代发动机油底壳设计方法及应用前景[J].国外内燃机,2016,48(3):59-62.
[5]郑小秋,谢世坤,易荣喜,等.低压铸造法制备铝基复合材料的研究现状[J].有色金属材料与工程,2018,39(5):55-61.
[6]尹立雪.发动机塑料油底壳的实际应用探讨[J].山东工业技术,2015(18):216.
[7]朱成兵,李金国,刘红.基于顺序阀的塑料塑料油底壳注塑工艺的多目标优化设计[J].现代塑料加工应用,2013,25(4):40-43.
[8]刘淑芬,宋晓龙,杨胜,等.基于Moldflow的浇注系统对塑件翘曲的影响研究[J].制造业自动化,2016,38(5):24-26.
[9]胡学川,李又兵.基于Moldflow的汽车中央控制面板中玻纤取向的分析[J].塑料工业,2014,42(10):47-49.
[10]高月华,王希诚.注塑制品的翘曲优化及影响因素分析[J].化工学报,2007,58(6):1575-1580.
[11]黄明瑜,关安南,王大中.Moldflow在玻纤增强产品翘曲优化中的应用[J].塑料工业,2013,41(10):20-23.
[12]周华民,高煌,张云,等.注塑成型工艺参数自动设置与优化技术[J].精密成形工程,2016,8(1):7-13.
[13]左大平,张益华,芮玉龙.玻璃纤维增强PA66制品翘曲变形的研究[J].工程塑料应用,2005,33(12):23-25.
[14]陈泽中,陈晨.微圆柱阵列注射成型数值模拟及正交优化[J].工程塑料应用,2016,44(11):67-70.
[15]陈泽中,赵娜.基于正交试验和多目标规划的微齿轮注塑成型数值模拟研究[J].塑性工程学报,2017,24(6):214-220.