改进过滤泊松路面模型激励下汽车疲劳载荷的研究

藤瑞品; 宋晓琳

doi:10.13433/j.cnki.1003-8728.20180050

改进过滤泊松路面模型激励下汽车疲劳载荷的研究

doi: 10.13433/j.cnki.1003-8728.20180050

1.
湖南大学汽车车身先进设计制造国家重点实验室, 长沙 410082

详细信息

作者简介:
藤瑞品(1974-),高级工程师,博士研究生,研究方向为汽车疲劳耐久与可靠性,trp11@163.com

计量
- 文章访问数: 475
- HTML全文浏览量: 36
- PDF下载量: 183
- 被引次数: 0
出版历程
- 收稿日期: 2017-09-06
- 刊出日期: 2018-10-05

Research on Fatigue Load of Automobile under Excitation of Improved Filtered Poisson Road Model

1.
State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China

摘要

摘要: 在过滤泊松路面模型的基础上，考虑车速为随机变量的非稳态激励因素，提出了用于汽车疲劳载荷分析的改进过滤泊松路面激励模型以及基于该模型激励下疲劳载荷的计算方法。以1/4整车模型为研究对象，以改进过滤泊松路面模型为激励，分别计算了车速为恒定值和车速为均匀分布随机变量的稳态和非稳态两种情况下，簧载质量和非簧载质量的载荷响应的幅频特性和统计计数特性，对不同车速和不同车速分布参数下的响应载荷统计数据进行了分析比较。研究结果表明，采用改进过滤泊松路面模型可以用于汽车的疲劳载荷计算，并且可以实现对车速为随机变量的非稳态路面激励的载荷响应的计算。
- 随机 /
- 路面激励 /
- 疲劳 /
- 非稳态
Abstract: Base on filtered Poisson road model, considering unsteady factor of random velocity variation, an improved filtered Poisson road model and fatigue load calculation method under the excitation of the model are presented for automobile fatigue load analysis. Taking 1/4 vehicle model as the researching object and improved filtered Poisson road model as excitation, the amplitude-frequency characteristics and statistical counting characteristics of load response of sprung mass and unsprung mass are calculated under two conditions of steady and unsteady excitation of constant velocity and random variation of velocity subordinating uniform distribution. The statistical date of response load under different velocity and distribution parameter of velocity is analyzed and compared. The result shows that the improved filtered Poisson road model can be used for fatigue load calculation of automobiles, and it can realize load response calculation under unsteady road excitation when velocity is random variation.
- statistics /
- road excitation /
- fatigue /
- unsteady

HTML全文

参考文献(18)

[1]	于海波.汽车承载系试验场用户关联可靠性试验方法研究[D].长春:吉林大学,2008 Yu H B. Research on reliability test method correlated proving round with customers usage for automotive load carrying system[D]. Changchun:Jilin University, 2008(in Chinese)
[2]	Wang J Z, Muddiman W, Moore G R. Structural correlation of automotive proving grounds to china customer field usage[C]//Higher Education Press, Fatigue'99:Proceedings of the Seventh International Fatigue Congress, 1999,4:2379-2384
[3]	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 Zhou Z. Study on virtual test method based on real road spectrum for virtual fatigue prediction[D]. Changsha:Hunan University, 2013(in Chinese)
[4]	陈栋华,靳晓雄,周鋐,等.轿车底盘零部件耐久性虚拟试验方法研究[J].汽车工程,2007,29(11):998-1001 Chen D H, Jin X X, Zhou H, et al. A study on virtual durability test method for car chassis components[J]. Automotive Engineering, 2007,29(11):998-1001(in Chinese)
[5]	靳畅,周鋐,慕乐.基于频响函数法的路面激励下车轮轴头力的估计[J].汽车工程,2014,36(4):469-474,485 Jin C, Zhou H, Mu L. Estimation of wheel spindle loads under road excitation based on frequency response function method[J]. Automotive Engineering, 2014,36(4):469-474,485(in Chinese)
[6]	卢凡,陈思忠.汽车路面激励的时域建模与仿真[J].汽车工程,2015,37(5):549-553 Lu F, Chen S Z. Modeling and simulation of road surface excitation on vehicle in time domain[J]. Automotive Engineering, 2015,37(5):549-553(in Chinese)
[7]	夏均忠, 马宗坡, 白云川,等.路面不平度激励模型研究现状[J].噪声与振动控制,2012,32(5):1-5 Xia J Z, Ma Z P, Bai Y C, et al. State of the research on model for road roughness excitation[J]. Noise and Vibration Control, 2012,32(5):1-5(in Chinese)
[8]	管迪华,范成建.用于不平路面车辆动力学仿真的轮胎模型综述[J].汽车工程,2004,26(2):162-167 Guan D H, Fan C J. A review of tire models for vehicle dynamics simulation on uneven road[J]. Automotive Engineering, 2004,26(2):162-167(in Chinese)
[9]	喻凡,林逸.汽车系统动力学[M].北京:机械工业出版社,2005 Yu F, Lin Y. Automotive system dynamics[M]. Beijing:China Machine Press, 2005(in Chinese)
[10]	Risam G S, Balakrishnan S, Patil M G, et al. Methodology for accelerated vibration durability test on electrodynamic shaker[C]//Small Engine Technology Conference & Exposition. SAE PAPER, 2006-32-0081
[11]	林晓斌.加速疲劳试验的疲劳编辑技术[J]. 中国机械工程,1998,9(11):27-30 Lin X B. Fatigue editing techniques for the acceleration of fatigue testing[J]. China Mechanical Engineering, 1998,9(11):27-30(in Chinese)
[12]	张湘伟.一维路面模型及其数值模拟方法[J].重庆大学学报,1998,11(1):106-112 Zhang X W. One-demension road model and numerical simulation method[J]. Journal of Chongqing University, 1998,11(1):106-112(in Chinese)
[13]	张湘伟,何正友.二维泊松过程的数值模拟及其在道路模型中的应用[J].重庆大学学报,1994,17(4):12-16 Zhang X W, He Z Y. A Numerical simulation of two-dimension Poisson process and its application in simulation of an uneven road[J]. Journal of Chongqing University, 1994,17(4):12-16(in Chinese)
[14]	孙涛,徐桂红,柴陵江.四轮非平稳随机激励路面模型的研究[J].汽车工程,2013,35(10):868-872 Sun T, Xu G H, Chai L J. A study on the road model with four-wheel non-stationary random excitations[J]. Automotive Engineering, 2013,35(10):868-872(in Chinese)
[15]	张立军,张天侠.车辆非匀速行驶使时路面随机输入的时频研究[J].汽车工程,2005,27(6):710-714 Zhang L J, Zhang T X. A study on road random inputs to a vehicle with uneven speed in time and frequency domains[J]. Automotive Engineering, 2005,27(6):710-714(in Chinese)
[16]	胡启国,钱凯,李力克,等.非平稳路面激励下车辆振动动力学建模与仿真[J].郑州大学学报(工学版),2012,33(6):49-53 Hu Q G, Qian K, Li L K, et al. Modeling and dynamic simulation of vehicles based on non-stationary road excitation[J]. Journal of Zhengzhou University (Engineering Science), 2012,33(6):49-53(in Chinese)
[17]	周长城,周金宝,任传波,等.汽车振动分析与测试[M].北京:北京大学出版社,2011 Zhou C C, Zhou J B, Ren C B, et al. Automotive vibration analysis and test[M]. Beijing:Beijing University Press, 2011(in Chinese)
[18]	盛骤,谢式千,潘承毅.概率论与数理统计[M].北京:高等教育出版社,2008 Sheng Z, Xie S Q, Pan C Y. Probability and mathematical statistics[M]. Beijing:Higher Education Press, 2008(in Chinese)