基于OptiStruct的驱动桥壳轻量化设计
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摘要
驱动桥壳作为汽车的重要承载部件,必须满足刚度和强度的要求,传统的设计理念为了保证性能需求,一般采用冗余设计。通过CAD/CAE的一体化建模技术,采用三维数学模型与有限元模型之间的联合设计,基于OptiStruct的尺寸优化算法实现驱动桥壳的轻量化设计。利用CATIA创建驱动桥壳三维数学模型,导入HYPERMESH力学、动力学分析、疲劳分析验证驱动桥壳满足使用标准,再在OptiStruct求解器做优化分析,经过多次迭代计算,得到分析结果。优化后的桥壳成质量为152. 042 kg,减少了50. 075 kg,减重达到24. 78%,然后对优化后驱动桥壳进行分析,最后对试制的优化后桥壳进行疲劳台架试验,分析和试验结果表明,优化后桥壳满足试验标准,对同类型的轻量化设计有一定的参考价值。
As an important part of automobile,the lightweight design of the driving axle housing must be carried out to meet the requirements of its stiffness and strength. In order to ensure the performance requirements,the traditional design concept generally adopts redundant design. Based on the integrated technology of CAD/CAE,the joint design between 3D mathematical model and finite element model is adopted,and the lightweight design of the driving axle housing is realized based on the size optimization algorithm of OptiStruct. The drive axle housing model created by CATIA is introduced into HYPERMESH for pre-processing,the calculation conditions and boundary conditions are designed and proposed. The statics,dynamics analysis and fatigue analysis are used to verify that the drive axle housing meets the use standard. Then the optimization analysis is conducted in the OptiStruct solver,and several iterative calculations are used to get the analysis result. The mass of the optimized axle housing is 152.042 kg,which is reduced by 50.075 kg,and the weight loss reaches 24.78%,and then the optimized drive axle housing is analyzed. Finally,the fatigue bench test of the optimized axle housing is carried out. The analysis and experimental results show that the optimized axle housing meets the test standard and a certain reference value for lightweight design of the same type is provided.
As an important part of automobile,the lightweight design of the driving axle housing must be carried out to meet the requirements of its stiffness and strength. In order to ensure the performance requirements,the traditional design concept generally adopts redundant design. Based on the integrated technology of CAD/CAE,the joint design between 3D mathematical model and finite element model is adopted,and the lightweight design of the driving axle housing is realized based on the size optimization algorithm of OptiStruct. The drive axle housing model created by CATIA is introduced into HYPERMESH for pre-processing,the calculation conditions and boundary conditions are designed and proposed. The statics,dynamics analysis and fatigue analysis are used to verify that the drive axle housing meets the use standard. Then the optimization analysis is conducted in the OptiStruct solver,and several iterative calculations are used to get the analysis result. The mass of the optimized axle housing is 152.042 kg,which is reduced by 50.075 kg,and the weight loss reaches 24.78%,and then the optimized drive axle housing is analyzed. Finally,the fatigue bench test of the optimized axle housing is carried out. The analysis and experimental results show that the optimized axle housing meets the test standard and a certain reference value for lightweight design of the same type is provided.
引文
[1]吴孝泉.汽车驱动桥壳有限元分析及结构改进[J].机械传动,2016(11):131-134.
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[3]廖美颖,谷玉川,王更胜.基于Optistruct的某汽车悬架上控制臂的尺寸优化设计[J].客车技术与研究,2013,35(2):21-23.
[4]刘惟信.汽车车桥设计[M].北京:清华大学出版社,2004:339-347.
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[6]全国汽车标准化技术委员会.汽车驱动桥台架试验评价指标:QC/T534-1999[S].北京:中国标准出版社,1999:117-118.
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[8]秦大同,谢里阳.疲劳强度与可靠性设计[M].北京:化学工业出版社,2013:152-168.
[9]全国汽车标准化技术委员会.汽车驱动桥台架试验方法:QC/T533-1999[S].北京:中国标准出版社,1999:3-4.
[10]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,2006:58-61.
[11]朱路明.复合材料机翼结构拓扑--尺寸联合优化设计[D].杭州:浙江大学,2017:26-29.
[12]单新平,罗远霞,范洪春.基于台架试验的桥壳疲劳分析[J].装备制造技术,2013(3):22-23.
[2]范子杰,桂良进,苏瑞意.汽车轻量化技术的研究与进展[J].汽车安全与节能学报,2014,5(1):1-16.
[3]廖美颖,谷玉川,王更胜.基于Optistruct的某汽车悬架上控制臂的尺寸优化设计[J].客车技术与研究,2013,35(2):21-23.
[4]刘惟信.汽车车桥设计[M].北京:清华大学出版社,2004:339-347.
[5]洪清泉,赵康,张攀.OptiStruct&HyperStudy理论基础与工程应用[M].北京:机械工业出版社,2013:135-143.
[6]全国汽车标准化技术委员会.汽车驱动桥台架试验评价指标:QC/T534-1999[S].北京:中国标准出版社,1999:117-118.
[7]孙辉,王吉忠,沙德文,等.微型车驱动桥壳结构强度与模态分析[J].机械设计与制造,2011(8):219-221.
[8]秦大同,谢里阳.疲劳强度与可靠性设计[M].北京:化学工业出版社,2013:152-168.
[9]全国汽车标准化技术委员会.汽车驱动桥台架试验方法:QC/T533-1999[S].北京:中国标准出版社,1999:3-4.
[10]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,2006:58-61.
[11]朱路明.复合材料机翼结构拓扑--尺寸联合优化设计[D].杭州:浙江大学,2017:26-29.
[12]单新平,罗远霞,范洪春.基于台架试验的桥壳疲劳分析[J].装备制造技术,2013(3):22-23.