Finite-element modelling of frictional behaviour between oesophagus and endoscope  

作　　者：Chengxiong Lin Pan Ren Wei Li Hengyi Deng Zhongrong Zhou 

机构地区：[1]Key Laboratory for Advanced Technology of Materials of Ministry of Education,Tribology Research Institute,Southwest Jiaotong University,Chengdu 610031,People’s Republic of China [2]Department of General Surgery,Chengdu Second People’s Hospital,Chengdu 610017,People’s Republic of China

出　　处：《Biosurface and Biotribology》2020年第3期75-81,共7页生物表面与生物摩擦学（英文）

基　　金：supported by the National Natural Science Foundation of China(nos.51675447).

摘　　要：The endoscopy is the most direct and effective means for digestive tract diseases.Medical workers can conduct a series of manipulations with the help of endoscope,including checking,removing,stripping the diseased tissue or placing the stent.In order to understand the frictional behaviour at the endoscope-oesophagus interface,the finite-element model was analysed by Abaqus in this study.Considering the different modelling conditions,the total force due to frictional stress,frictional dissipation and the maximum Mises stress for the whole model were studied.Results showed that with the increasing amplitude,coefficient of friction and decreasing diameter,the total forces due to the frictional stress and the FD increased obviously.It did not present a clear difference with the variable distance for overlapping parts(region L).The positions of maximum Mises stress for the whole model under different conditions mainly focused on the initial part of the region R.The maximum Mises stress between different diameters showed a big difference.The results can provide the basic data for the finite-element modelling of frictional behaviour of human tissue.

关 键 词：FRICTION frictional BEHAVIOUR 

分 类 号：TG1[金属学及工艺—金属学]