基于响应面近似模型的汽车后桥桥壳优化
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摘要
为进一步提高汽车后桥桥壳的设计强度和疲劳寿命进而提升整车性能,运用多体动力学软件ADAMS建立整车动力学模型,将后桥的三维模型与桥壳材料、单元类型相结合进行有限元网格划分,并针对Bump工况进行ABAQUS有限元静力学分析,然后采用响应面近似模型对汽车后桥桥壳进行优化.结果表明:优化后后桥桥壳在极端工况Bump下的最大应力为45. 76 MPa,相比优化前减少了约10%,疲劳寿命延长了约17%,优化效果明显.
In order to improve the design strength and fatigue life of the automobile rear axle housing and further improve the vehicle performance,ADAMS was used to establish the vehicle dynamics simulation model,finite element mesh generation was made by combining the three-dimensional model of axle housing material and unit type. ABAQUS was used to carry out finite element statics analysis of the automobile rear axle housing according to Bump working condition,and response surface approximation model was used to optimize the automobile rear axle housing. The results showed that the maximum stress of the rear axle shell under extreme conditions of Bump was reduced by about 10% and the fatigue life was prolonged by about 17%.
In order to improve the design strength and fatigue life of the automobile rear axle housing and further improve the vehicle performance,ADAMS was used to establish the vehicle dynamics simulation model,finite element mesh generation was made by combining the three-dimensional model of axle housing material and unit type. ABAQUS was used to carry out finite element statics analysis of the automobile rear axle housing according to Bump working condition,and response surface approximation model was used to optimize the automobile rear axle housing. The results showed that the maximum stress of the rear axle shell under extreme conditions of Bump was reduced by about 10% and the fatigue life was prolonged by about 17%.
引文
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[2]张敏,李丽君,纪祥飞.矿用重型卡车前梁的多工况强度分析[J].煤炭工程,2015,47(12):139.
[3]马青,王涛.某圆柱壳体结构加筋拓扑优化分析[J].四川兵工学报,2015,36(9):79.
[4]刘巧红.载重5 t驱动桥壳强度刚度及疲劳寿命的分析[D].秦皇岛:燕山大学,2016.
[5]高晶,宋健,朱涛.随机载荷作用下汽车驱动桥壳疲劳寿命预估[J].机械强度,2008,30(6):982.
[6]孟莹.基于ADAMS的某皮卡车平顺性仿真与优化[D].北京:北京林业大学,2015.
[7]孙贵斌,孙晓平. VDS-A01客车前悬架系统仿真分析[J].客车技术与研究,2015(2):5.
[8]徐劲力,罗文欣,饶东杰,等.基于Workbench对微车后桥桥壳的轻量化研究[J].图学学报,2015,36(1):128.
[9]罗天洪,李德山,黄兴刚,等.轮式挖掘机驱动桥壳疲劳失效分析[J].重庆理工大学学报(自然科学),2013,27(5):1.
[10]陈元华.矿用自卸车驱动桥壳有限元疲劳分析与优化[J].煤炭技术,2012,31(7):30.
[11]周广廷.基于变截面驱动桥桥壳的静强度和动应力分析[D].青岛:青岛科技大学,2011.
[12]雷刚.基于ADAMS的麦弗逊式悬架系统的虚拟仿真分析及其优化设计[D].武汉:武汉理工大学,2010.
[13]陈乾.汽车可靠性试验的影响因素及改进措施初探[J].企业科技与发展,2009(22):57.
[14]王延克.基于响应面法的汽车悬架系统优化设计[D].成都:西南交通大学,2009.
[15]李欣.重型货车驱动桥桥壳结构分析及其轻量化研究[D].武汉:武汉理工大学,2006.