U型伸缩臂下滑块厚度调整对接触应力影响研究  

Research on effect of thickness adjustment of lower sliding plate of U-shaped telescopic boom on contact stress

作　　者：杨山林[1] 虞慧岚[1] 薛金星 陈礼 

机构地区：[1]大连理工大学机械工程学院,大连116024 [2]大连益利亚工程机械有限公司,大连116024

出　　处：《起重运输机械》2014年第4期74-77,共4页Hoisting and Conveying Machinery

摘　　要：针对U形截面伸缩臂提出了径向不等厚度的下滑块布置方式,改变了臂架搭接处初始接触状态,并用Ansys/LS-DYNA显示动力有限元软件对吊臂与下滑块进行接触分析,对比了吊臂接触区应力值大小及分布状况。结果表明,下滑块厚度的改变可有效地降低接触区最大应力,改善接触区局部应力分布,对进一步提高臂架强度和承载能力有一定的意义。The paper puts forward the layout of lower sliding plates with different radial thicknesses for the U-shaped telescopic boom,and the initial contact state at the lapping point of the boom is changed.Ansys/LS-DYNA explicit dynam-ic finite element software is adopted for contact analysis of the boom and lower sliding plate,with comparison of the stress value and distribution states in the boom contact area.As it turns out,change of thickness of the lower sliding plate can ef-fectively reduce the maximum stress in the contact area,improve the local stress distribution,and provide certain signifi-cance for improvement of boom strength and bearing capacity.

关 键 词：伸缩吊臂 滑块 接触分析 

分 类 号：TH213.6[机械工程—机械制造及自动化]