基于动态特性的固定连接杆形状参数研究  

Study on the Shape and Dynamic Parameter Characteristics of the Fixed-point Connecting Rod

作　　者：曾发林[1] 曾少波[2] 李建康[1] ZENG Falin ZENG Shaobo LI Jiankang(Automotive Engineering Research Institute, Jiangsu University, Zhenjiang 212013, China School of Automotive and Traf- fic Engineering, Jiangsu University, Zhenjiang 212013, China)

机构地区：[1]江苏大学汽车工程研究院,江苏镇江212013 [2]江苏大学汽车与交通工程学院,江苏镇江212013

出　　处：《郑州大学学报（工学版）》2017年第1期6-10,共5页Journal of Zhengzhou University（Engineering Science）

基　　金：江苏省高校自然科学研究项目(11KJA580001)

摘　　要：连接杆件在汽车及机械结构中被广泛使用,振动破坏是其主要失效形式.影响连接杆件振动的主要因素是杆件的动态特性.通过建立连接杆件系统的振动学方程,并利用有限元软件MIDAS对连接杆件进行模态分析.分析结果表明,在位置固定、横截面积一定的情况下,各个振型的径弦比与固有频率、角度与固有频率存在一定的规律,且此结论在某型号的半挂牵引车上得到了验证,并为连接杆件的结构设计或者进一步的结构优化提供了理论依据.The connecting rod was widely used in the automotive and mechanical structure of which main failure mode is vibration-damage. Vibration-damage was the main failure mode of connecting rod. The dynamic characteristics of the connecting rod were the main factors which affect the vibration of it. Therefore,by establishing vibration equation and using finite element software MIDAS,the modal analysis was done and the results showed that there was a certain regularity between the diameter ratio and,the natural frequencies,the angle and natural frequencies of the various model shapes at a fixed location and cross-section. This conclusion had been verified on the tractor-trailer. It provided a theoretical basis for the structural design or further structural optimization.

关 键 词：连接杆件 振动破坏 MIDAS 模态分析 结构设计 

分 类 号：U463.1[机械工程—车辆工程]