文档介绍：履带式沙滩清洁车车架模态分析
欧阳联格, 谢焕彩, 周水庭, 唐友名
(厦门理工学院机械与汽车工程学院,福建厦门 361024)
摘要:基于 CREO 建立车架的三维结构模型,利用 ANSYS Workbench 的 Modal 模块对车架进行模态分析。分析结果表明,车架振动以弯曲振动为主,振动区域主要集中在车架前部。车架固有频率都大于发动机怠速激励频率和路面激励频率,但是第一阶模态频率接近发动机怠速激励频率,可能引发共振。为了改善车架的模态性能,对车架进行改进,结合模态分析结果,可知改进后的车架模态性能得到改善。
关键词:沙滩清洁车;车架;动态特性;模态分析
中图分类号:TH 123 文献标志码:A 文章编号:1002-2333(2014)07-0116-03
Modal Analysis of Crawler Beach Cleaner Frame
OUYANG Liange, XIE Huancai, ZHOU Shuiting, TANG Youming
(Institute of Mechanical and Automotive Engineering,Xiamen University of Technology,Xiamen 361024,China) Abstract: Based on CREO software,the three -dimensional structural model of frame was built. Modal analysis was made by using ANSYS Workbench’s Modal module. The results show that the main vibration of the frame is bending and vibration area mainly concentrated in the front of the frame. Frame inherent frequency is greater than the engine
idle speed frequency and the road excitation frequency, but the first order modal frequency close to the engine idle speed excitation frequency, could cause resonance. In order to improve the modal performance, the frame is improved. The modal analysis results prove that the frame modal performance is improved.
Key words: beach cleaner; frame; dynamic characteristics; modal analysis
0 引言
沙滩清洁车是专门用于清洁沙滩、清扫沙滩垃圾的专用设备。本文研究的沙滩清洁车的底盘用的是摆动式履带底盘,运动惯性大,缓冲减振作用小[1]。沙滩清洁车最主要的作业环境是不平整的沙滩,无论在行驶还是在作业过程中都会产生振动。车架是清