Fatigue Analysis of Vehicle Truss Frame based on Time Series Load Method
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摘要: 桁架式车架因具有刚度大、质量小等优点，已在高性能车辆上得到广泛使用。为确保车辆安全性和耐久性，对其进行疲劳分析、预测疲劳危险点具有重要意义。根据该类车辆的特性，规划了测试路线，并通过加速度传感器获得加速度载荷谱；分析了车架系统特性和载荷变化频率，确定采用时间序列载荷法；使用雨流计数法对载荷谱进行计数，并对比分析了几种常用的平均应力修正理论；对车架进行疲劳分析，获得车架预测寿命与疲劳危险点的位置。Abstract: The truss frame is widely used in high-performance vehicles because it has the advantages of large rigidity and light weight. It is important for safety and durability of vehicles to analyze the fatigue damage and fatigue risk points of the frame. Firstly, the test route was planned according to the vehicle characteristics. The acceleration load spectrum was obtained through the acceleration sensor. Secondly, spectrum analysis was used for the characteristics of the frame and frequency of load change. The time series fatigue calculation method was chosen. Thirdly, the rain-flow counting method was used to count the load spectrum. Several commonly mean stress amending theories were analyzed and compared. Lastly, the fatigue analysis of the frame was carried out. The predicted life of the frame and the location of the fatigue risk point were known.
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Key words:
- fatigue damage /
- spectrum analysis /
- time series
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表 1 车架模态分析
阶数 频率/Hz 1 0 2 0 3 0 4 6.39×10-3 5 6.88×10-3 6 7.53×10-3 7 62.47 8 82.11 9 93.69 10 100.17 11 115.95 12 135.49 
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[1] Jacob I S. Design, analysis and manufacture of 2011 REV Formula SAE vehicle chassis[D]. Australia: The University of Western Australia, 2011 [2] 刘建伟, 王宇, 朱云峰, 等.桁架式车架灵敏度分析与结构优化[J].制造业自动化, 2017, 39(7):76-80 doi: 10.3969/j.issn.1009-0134.2017.07.019Liu J W, Wang Y, Zhu Y F, et al. The stiffness analysis and optimization of the truss frame[J]. Manufacturing Automation, 2017, 39(7):76-80(in Chinese) doi: 10.3969/j.issn.1009-0134.2017.07.019 [3] 尹辉俊, 王雨, 姜美姣.某乘用车后轴的疲劳分析及结构改进[J].机械设计, 2015, 32(3):33-36 doi: 10.3969/j.issn.2095-509X.2015.03.007Yin H J, Wang Y, Jiang M J. Fatigue analysis and structural improvement for rear-axle of passenger car[J]. Journal of Machine Design, 2015, 32(3):33-36(in Chinese) doi: 10.3969/j.issn.2095-509X.2015.03.007 [4] 王爱红, 徐格宁, 高有山.桥式起重机随机应力谱获取及疲劳剩余寿命估算[J].机械工程学报, 2012, 48(18):192-198 http://d.old.wanfangdata.com.cn/Periodical/jxgcxb201218029Wang A H, Xu G N, Gao Y S. Random stress spectrum acquisition and fatigue residual life estimate for overhead travelling crane[J]. Journal of Mechanical Engineering, 2012, 48(18):192-198(in Chinese) http://d.old.wanfangdata.com.cn/Periodical/jxgcxb201218029 [5] 吴健栋, 蔡志鹏, 汤之南, 等.低周疲劳过程损伤变量的复合分析法和三阶段损伤演化模型[J].机械工程学报, 2015, 51(10):86-95 http://d.old.wanfangdata.com.cn/Periodical/jxgcxb201510014Wu J D, Cai Z P, Tang Z N, et al. Combination analyzing method to characterize damage variable and three stage model of fatigue damage in low-cycle fatigue[J]. Journal of Mechanical Engineering, 2015, 51(10):86-95(in Chinese) http://d.old.wanfangdata.com.cn/Periodical/jxgcxb201510014 [6] 潘春宇, 童乐为.考虑低应力幅影响的钢吊车梁疲劳可靠度分析[J].同济大学学报:自然科学版, 2015, 43(4):506-512 http://d.old.wanfangdata.com.cn/Periodical/tjdxxb201504004Pan C Y, Tong L W. Fatigue reliability analysis of steel crane girders considering influence of low stress range[J]. Journal of Tongji University:Natural Science, 2015, 43(4):506-512(in Chinese) http://d.old.wanfangdata.com.cn/Periodical/tjdxxb201504004 [7] 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 doi: 10.3969/j.issn.1000-680X.2014.03.020Zhou 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) doi: 10.3969/j.issn.1000-680X.2014.03.020 [8] 李成林, 韩振南, 霍俊杰, 等.基于有限元的半挂牵引车车架疲劳寿命分析[J].工程设计学报, 2013, 20(5):414-418, 426 doi: 10.3785/j.issn.1006-754X.2013.05.011Li C L, Han Z N, Huo J J, et al. Fatigue life analysis of semi-trailer frame based on FEM[J]. Chinese Journal of Engineering Design, 2013, 20(5):414-418, 426(in Chinese) doi: 10.3785/j.issn.1006-754X.2013.05.011 [9] 阳清泉, 谷正气, 米承继, 等.SF33900型矿用自卸车车架疲劳寿命分析[J].汽车工程, 2012, 34(11):1015-1019 doi: 10.3969/j.issn.1000-680X.2012.11.011Yang Q Q, Gu Z Q, Mi C J, et al. An analysis on the fatigue life of frame in SF33900 mining dump truck[J]. Automotive Engineering, 2012, 34(11):1015-1019(in Chinese) doi: 10.3969/j.issn.1000-680X.2012.11.011 [10] 董刚, 李建功, 潘凤章.机械设计[M].北京:机械工业出版社, 1999Dong G, Li J G, Pan F Z. Machine design[M]. Beijing:China Machine Press, 1999(in Chinese) [11] Nishio S, Igarashi M. Investigation of car body structural optimization method[J]. International Journal of Vehicle Design, 1990, 11(1):79-86 doi: 10.1504/IJVD.1990.061609 [12] Kim H S, Yim H J, Kim C B. Computational durability prediction of body structures in prototype vehicles[J]. International Journal of Automotive Technology, 2002, 3(4):129-135 http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=13f65f7e39c0a29ea069a1a1fb3b13a0 [13] 高云凯, 徐成民, 方剑光.车身台架疲劳试验程序载荷谱研究[J].机械工程学报, 2014, 50(4):92-98 http://d.old.wanfangdata.com.cn/Periodical/jxgcxb201404014Gao Y K, Xu C M, Fang J G. Study on the programed load spectrum of the body fatigue bench test[J]. Journal of Mechanical Engineering, 2014, 50(4):92-98(in Chinese) http://d.old.wanfangdata.com.cn/Periodical/jxgcxb201404014 [14] 赵连星, 李迪, 孙彩凤, 等.先进高强度双相钢车身板的韧性断裂准则分析[J].机械科学与技术, 2017, 36(6):955-959 http://journals.nwpu.edu.cn/jxkxyjs/CN/abstract/abstract6745.shtmlZhao L X, Li D, Sun C F, et al. Analysis of ductile fracture criteria of advanced high strength dual-phase steels[J]. Mechanical Science and Technology for Aerospace Engineering, 2017, 36(6):955-959(in Chinese) http://journals.nwpu.edu.cn/jxkxyjs/CN/abstract/abstract6745.shtml [15] 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, 2017, 36(9):1381-1387 http://journals.nwpu.edu.cn/jxkxyjs/CN/abstract/abstract6814.shtmlDing X M, Wei J G, Xiao F. Durability analysis and optimization of car front suspension structure[J]. Mechanical Science and Technology for Aerospace Engineering, 2017, 36(9):1381-1387(in Chinese) http://journals.nwpu.edu.cn/jxkxyjs/CN/abstract/abstract6814.shtml -
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