%0 Journal Article
%T The Elastic-viscoplastic Field At The Mixed-mode Steadily Propagating Crack-Tip Under Compression And Shear<br>压-剪混合型定常扩展裂纹尖端的弹黏塑性场
%A Bo Zhou
%A <br>梁文彦
%A 王振清
%A 周博
%J 力学学报
%D 2006
%I 
%X Under the assumption that the artifical viscosity cofficient is in inverse proportion to power law of the plastic strain rate.The friction touch effection beween viscosity and crack-tip surface be considerde,the asymptotic solution is established for elastic-viscoplastic field at the mixed-mode propagating crack-tip under comprission and shear.The numerical solution to crack-tip without stress and stain gap is got. The variation of numerical solution are discussed for the mixed-mode under compression and shear according to each parameter.It is shown in numerical results and analysis that for the mixed-mode crack-tip field under compressing and shear is whole plastic without elatic unloaded section,viscosity effection is an important factor when propagating crack-tip field is studied, whether the mixed-mode crack trend to mode I or to mode II,the hydro-statil stresses are added according to the increasing on frictional coefficient. The crack-tip propagating velocity is prevented due to the frictoon on crack face,the tenacity on crack-tip freld become more higher with the more strorger on friction. Keywords: mixed-mode crack-tip under compression and shear; steadily propagating; viscosity effection elastic-viscoplastic materials
%K mixed-mode crack-tip under compression and shear
%K steadily propagating
%K viscosity effect
%K elasticviscoplastic materials<br>压-剪混合型裂纹
%K 定常扩展
%K 黏性效应
%K 弹黏塑性材料
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=4100DA4A1A3BA1B0CE5AD99AE1DFB420&aid=1E39FD49BEAB2782&yid=37904DC365DD7266&vid=16D8618C6164A3ED&iid=94C357A881DFC066&sid=54E527C5B72E59D8&eid=42FF82ADD37D41AA&journal_id=0459-1879&journal_name=力学学报&referenced_num=1&reference_num=11