机械动力学:2017,Vol:36,Issue(9):1381-1387
引用本文:
丁晓明, 韦进光, 肖甫. 汽车前悬结构件耐久性分析及优化[J]. 机械科学与技术
Ding Xiaoming, Wei Jinguang, Xiao Fu. Durability Analysis and Optimization of Car Front Suspension Structure[J]. Journal Of Remote Sensing

汽车前悬结构件耐久性分析及优化
丁晓明, 韦进光, 肖甫
上汽通用五菱汽车股份有限公司, 广西柳州 545007
摘要:
为了准确预测汽车前悬结构件的耐久性,建立了前悬系统有限元模型,采用路试实测载荷的极限值对有限元模型加载进行强度分析,采用路试实测动态载荷对前悬系统有限元模型进行疲劳分析。强度分析结果表明整车在过坑工况下前悬筒壁的最大应力位置和应力值都与试验完全吻合;疲劳分析结果也表明弯曲处疲劳损伤严重。以上分析证明了采用前悬系统有限元的强度分析和疲劳分析能够有效预测前悬结构件的耐久性。在前期没有实测载荷的情况下,采用相关路谱载荷的极限值进行强度计算能够有效预测出耐久性问题。通过对前悬臂筒设计优化,发现提升材料性能比增加壁厚效果更明显,减小衬套刚度会引起减小载荷,但作用有限。
关键词:    前悬    耐久性分析    优化   
Durability Analysis and Optimization of Car Front Suspension Structure
Ding Xiaoming, Wei Jinguang, Xiao Fu
SAIC-GM-Wuling Automobile Co., Ltd., Guangxi Liuzhou 545007, China
Abstract:
In order to predict the durability of car front suspension structure, a finite element model was built, the strength with the maximum load of real road spectrum was analyzed and the durability with the dynamical real road spectrum was analyzed. By contrast, the maximum stress value and the position of the vehicle are fully consistent with the experimental result, fatigue analysis also showed severe fatigue damage. The example shows the strength and fatigue analysis with finite element can predict the durability of front suspension structural parts. In the early days no actual load conditions, with correlation road load maximum, the strength analysis can predict the durability. Finally, to optimize front suspension structure design showed that to enhance the material properties was more pronounced than to increase the thickness. There are not obvious improvement by reducing the bushing stiffness.
Key words:    front suspension    durability analysis    optimization   
收稿日期: 2016-05-04     修回日期:
DOI: 10.13433/j.cnki.1003-8728.2017.0912
通讯作者:     Email:
作者简介: 丁晓明(1979-),工程师,硕士,研究方向为整车结构CAE分析和动力性经济性能分析,smartdxm05@163.com
相关功能
PDF(1117KB) Free
打印本文
把本文推荐给朋友
作者相关文章
丁晓明  在本刊中的所有文章
韦进光  在本刊中的所有文章
肖甫  在本刊中的所有文章

参考文献:
[1] 蔡进军.独立悬架总成疲劳损伤分析[D].武汉:武汉理工大学,2012 Cai J J. Fatigue damage analysis of the independent suspension assembly[D]. Wuhan:Wuhan University of Technology, 2012(in Chinese)
[2] 朱文学,郑惠强,石来德.桑塔纳2000型轿车前悬架结构强度有限元分析[J].汽车技术,1998,(11):1-4,29 Zhu W X, Zheng H Q, Shi L D. Front suspension structural strength analysis of Santana model 2000 based on FEM analysis[J]. Automobile Technology, 1998,(11):1-4,29(in Chinese)
[3] 杨延勇.基于有限元的某车前悬架结构强度分析[J].科技传播,2011,(3):109 Yang Y Y. Front suspension structural strength analysis based on FEM Analysis[J]. Public Communication of Science & Technology,2011,(3):109(in Chinese)
[4] 缪炳荣.基于多体动力学和有限元法的机车车体结构疲劳仿真研究[D].成都:西南交通大学,2007 Miao B R. Simulation research of locomotive carbody structure fatigue based on multibody dynamics and finite element method[D]. Chengdu:Southwest Jiaotong University, 2017(in Chinese)
[5] 赵武云,刘艳妍,吴建民,等.ADAMs基础与应用实例教程[M].北京:清华大学出版社,2012 Zhao W Y, Liu Y Y, Wu J M, et al. ADAMs foundation and application examples of the tutorial[M]. Beijing:Tsinghua University Press, 2012(in Chinese)
[6] 周泽,李光耀,唐传,等.基于耐久性虚拟试验的车身结构疲劳分析[J].汽车工程,2014,36(3):362-367 Zhou Z, Li G Y, Tang C, et al. The fatigue analysis of car body structure based on virtual durability test[J]. Automotive Engineering, 2014,36(3):362-367(in Chinese)
[7] 周泽.基于真实路谱重现的虚拟台架及汽车疲劳寿命预测研究[D].长沙:湖南大学,2013:33 Zhou Z. Study on virtual test method based on real road spectrum for virtual fatigue prediction[D]. Changsha:Hu'nan University, 2013:33(in Chinese)
[8] 朱才朝,张伟敏,乔莉,等.摩托车车架系统疲劳强度分析及与寿命预估[J].汽车工程,2007,29(10):900-904 Zhu C C, Zhang W M, Qiao L, et al. Fatigue strength analysis and life prediction for motorcycle frame[J]. Automotive Engineering, 2007,29(10):900-904(in Chinese)
[9] nCode Internation Ltd. FE-fatigue theory[G]. Southfield:nCode Internation Ltd., Version5.3-6.0, 2002
[10] 唐应石,张武,段心林,等.基于整车动力学仿真的后桥壳疲劳寿命分析与改进[J].汽车工程,2009,31(2):114-117 Tang Y S, Zhang W, Duan X L, et al. Analysis and improvement of rear axle housing fatigue life based on vehicle dynamics simulation[J]. Automotive Engineering, 2009,31(2):114-117(in Chinese)
[11] 彭为,靳晓雄,左曙光.基于有限元分析的轿车后桥疲劳寿命预测[J].汽车工程,2004,26(4):507-509,480 Peng W, Jin X X, Zuo S G. Fatigue life prediction of car's rear axle based on FEM Analysis[J]. Automotive Engineering, 2004,26(4):507-509,480(in Chinese)
[12] 孙宏祝,陈循,梁科山,等.基于整车虚拟道路行驶试验的车辆零部件疲劳分析[J].国防科技大学学报,2007,29(4):121-125 Sun H Z, Chen X, Liang K S, et al. Fatigue analysis for auto parts based on the vehicle virtual road testing[J]. Journal of National University of Defense Technology, 2007,29(4):121-125(in Chinese)
[13] 毛显红,肖攀,陈建华,等.基于道路谱的汽车车身疲劳分析[J].计算机辅助工程,2011,20(2):75-78 Mao X H, Xiao P, Chen J H, et al. Automotive body fatigue analysis based on road spectrum[J]. Computer Aided Engineering, 2011,20(2):75-78(in Chinese)
[14] 吴涛,茆汉湖,戴轶.基于路谱频域的车身疲劳分析[J].计算机辅助工程,2012,21(2):50-52,83 Wu T, Mao H H, Dai Y. Vehicle body fatigue analysis based on frequency domain of road spectrum[J]. Computer Aided Engineering, 2012,21(2):50-52,83(in Chinese)
[15] 王娜.面向汽车耐久性分析的底盘橡胶衬套建模研究[D].长春:吉林大学,2011:60-63 Wang N. Chassis rubber bushing modeling for automotive durability analysis[D]. Changchun:Jilin University, 2011:60-63(in Chinese)