工程专用自卸车车架动态响应研究  

The Research on the Dynamic Response of Special Engineering Dump Truck Frame

作　　者：徐元栋[1] 王铁[1] 谷丰收[1,2] 陈峙[1] 周驰[1] 

机构地区：[1]太原理工大学机械工程学院,太原030024 [2]哈德斯菲尔德大学工程与效能中心

出　　处：《机械科学与技术》2016年第2期309-314,共6页Mechanical Science and Technology for Aerospace Engineering

基　　金：山西省高新技术产业化项目(2011-2368);山西省研究生优秀创新项目(2012-302)资助

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。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.

关 键 词：车架 模态分析 路面试验 小波变换 

分 类 号：U463.32[机械工程—车辆工程]