The Research on the Dynamic Response of Special Engineering Dump Truck Frame
-
摘要: 工程自卸车行驶路面崎岖不平,行驶环境较为恶劣,由不平路面产生的激励不仅严重影响车辆的舒适性,对车架的安全性及使用寿命都带来较大影响。为了更好地验证车架的动态性能,本文对工程专用自卸车整车进行了典型路面动态特性试验。由于数据信号线性和平稳性较差,难以直接处理分析,本文中结合固有模态分析与具有自适应性的信号小波变换,对采集到的车架关键点振动信号进行小波变换,分析了变换后的信号,提取了车架的动态特征,找出了车架的薄弱位置和潜在问题。Abstract: The working roads of the special engineering dump truck are rough and its working environments are extremely terrible. The excited vibration of the rough road reduces the ride comfort and the truck frame lifetime. To verify the dynamic responses of the frame, the typical road experiments of the special engineering dump truck are made on the building site. Because the nonlinear and non-stationary signal is difficult to be analyzed directly, the wavelet transforms are necessary in the process of the signal analysis. Combined the mode analysis with the wavelet transforms, the dynamic responses are seized in the signal of the key points of the frame. The weak points and potential problems are found.
-
Key words:
- modal analysis /
- road test /
- Truck frame /
- wavelet transforms
-
[1] 赵震.重型自卸车车架的有限元分析及优化[D].太原:太原理工大学,2012 Zhao Z. Finite element analysis and optimization of heavy-duty dump truck frame[D]. Taiyuan:Taiyuan University of Technology, 2012(in Chinese) [2] 刘林华,辛勇.基于灵敏度分析的汽车车架轻量化研究[J].机械科学与技术,2011,30(10):1724-1727 Liu L H, Xin Y. A study on the lightweighting of vehicle frame based on sensitivity analysis[J]. Mechanical Science and Technology for Aerospace Engineering, 2011,30(10):1724-1727(in Chinese) [3] 石琴,汪成明,刘钊.基于灵敏度分析的车身结构优化设计[J].合肥工业大学学报(自然科学版),2009,32(7):955-958 Shi Q, Wang C M, Liu Z. Optimization design of structure of body-in-white based on the sensitivity analysis[J]. Journal of Hefei University of Technology, 2009,32(7):955-958(in Chinese) [4] Takamatsu M, Fujita H, Inoue H, et al. Development of lighter-weight, higher-stiffness body for new Rx-7[R]. SAE Technical Paper 920244, 1992 [5] 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 Yang 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) [6] 傅志方,华宏星.模态分析理论与应用[M].上海:上海交通大学出版社,2000 Fu Z F, Hua H X. Theory and application of modal analysis[M]. Shanghai:Jiaotong University Press, 2000(in Chinese) [7] 刘静.某特种车辆车架疲劳可靠性分析研究[D].南京:南京理工大学,2007 Liu J. Fatigue reliability analysis of the frame for some special vehicle[D]. Nanjing:Nanjing University of Science and Technology, 2007(in Chinese) [8] 刘伟,刘大维,陈焕明,等.重型自卸汽车车架模态试验与分析[J].拖拉机与农用运输车,2008,35(6):93-94 Liu W, Liu D W, Chen H M, et al. Modal test and analysis on frame of heavy dump truck[J]. Tractor & Farm Transporter, 2008,35(6):93-94(in Chinese) [9] 申晋宪,王铁.载货汽车总体设计分析[M].北京:中国标准出版社,2013 Shen J X, Wang T. Truck overall design and analysis[M]. Beijing:Standards Press of China, 2013(in Chinese) [10] Elbarghathi F, Wang T, Zhen D, et al. Two stage helical gearbox fault detection and diagnosis based on continuous wavelet transformation of time synchronous averaged vibration signals[J]. Journal of Physics:Conference Series, 2012,364(1) [11] 张芸芸,王新.故障信号检测时最佳小波基的选择[J].微计算机信息,2012,28(1):52-54 Zhang Y Y, Wang X. Selection of the optimal wavelet basis for detection of fault signal[J]. Microcomputer Information, 2012,28(1):52-54(in Chinese) [12] 周小勇,叶银忠.故障信号检测的小波基选择方法[J].控制工程,2003,10(4):308-311 Zhou X Y, Ye Y Z. Method of choosing a wavelet for fault detection[J]. Control Engineering of China, 2003,10(4):308-311(in Chinese) [13] Elbarghathi F, Tian X G, Tung Tran V, et al. Multi-stages helical gearbox fault detection using vibration signal and Morlet wavelet transform adapted by information entropy difference[C]//COMADEM, Helsinki, Finland, 2013 [14] 谢军,李乐,刘文峰.振动信号噪声消除中的小波基选择研究[J].科学技术与工程,2011,11(25):5997-6000,6009 Xie J, Li L, Liu W F. Research on wavelet base selection for vibration signal denoising[J]. Science Technology and Engineering, 2011,11(25):5997-6000,6009(in Chinese) [15] 郭亚.振动信号处理中的小波基选择研究[D].合肥:合肥工业大学,2003 Guo Y. Research on wavelet base selection for vibration signal processing[D]. Hefei:Hefei University of Technology, 2003(in Chinese)
点击查看大图
计量
- 文章访问数: 160
- HTML全文浏览量: 31
- PDF下载量: 6
- 被引次数: 0