3D Finite Element Model Considering Microscopic Material Inhomogeneity for Prediction of Free Surface Roughening Under Tensile Deformation
(0) In the micro-scale region, surface roughness of material is an important process factor related to formability in micro scale. In particular, the free surface roughening is caused by microscopical inhomogeneity of the material due to grain size and crystal orientation. In this study, to predict the evolution of the surface roughness on free surface with plastic deformation, commercial three-dimensional finite element (3D FE) analysis considering material inhomogeneity was performed. We input the data of statistical distribution at random of material properties to the 3D FE simulation. In order to verify the validity of FE simulation for prediction of free surface roughening, tensile test experiments were conducted. The three-dimensional behavior of the free surface roughening is investigated experimentally and numerically. As a result, it is confirmed that the slope of increase in surface roughness under measuring direction of 0° from the tensile direction is larger than that of 45 and 90°. The simulation result obtained from 3D FE analysis considering material inhomogeneity was similar agreement with the experimental results. In addition, the effectiveness and possibility of 3D FE simulation considering material inhomogeneity to predict the free surface roughening was discussed.
Free Surface Roughening Surface Roughness Material Inhomogeneity 3D Finite Element Analysis
T.Furushima K.Manabe S.Alexandrov
Dept.Mechanical Engineering, Tokyo Metropolitan Univ., 1-1 Minami-ohsawa, Hachioji, Tokyo, 192-0397, Institute for Problems in Mechanics, Russian Academy of Sciences 101-1, Prospect Vernadskogo, Moscow
国际会议
2nd Asian Workshop on Macro/Nano Forming Technology(AWMFT-2009)(第2届亚洲微米纳米技术研讨会)
长沙
英文
628-631
2009-10-25（万方平台首次上网日期，不代表论文的发表时间）