Analysis on the Efficient Finite Element Contact Stress for Telescopic Boom of Construction Machinery
WANG Yanhui
CUI Zhe
DONG Lijuan
JI Haojie
JIANG Wenguang
Abstract：The contact between the adjacent booms of the mechanical telescopic system on construction machinery is a commonly existing problem needs to be dealt with rationally and the most effective way to solve it is through the finite element(FE) analyses .However ,for large scale engineering machines ,analysis of the w hole structures needs too long computing time and in many cases the solution is hard to converge . In order to increase the computational efficiency ,this paper adopted a two‐stage solution strategy ,i .e ., analysis of the global FE model with very coarse mesh is carried out first to derive the local boundary con‐ditions for sub‐models w hich only contain the geometry of the local contact regions of the adjacent booms . As the sub‐models only model a small fraction of the whole machine ,sufficient fine FE meshes could be used to yield accurate local contact stress results with less computational resources .An example analysis of a practical design using the efficient computational strategy has been implemented .The global‐local two‐stage method was found to be much more efficient than the modeling the entire machine using fine FE mesh for achieving comparable local contact stress accuracy .
Keywords：telescopic boomfinite element analysisglobal-local analysiscontact stress
Publication Date：2015-07-02
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 80-84 )