Modeling of Strain Localization and Failure in Vanadium under Quasistatic Loading
The process of plastic deformation and failure of metals is accompanied by set of phenomena which cannot be easily modeled in the framework of classical models.The effects of strain localization and energy dissipation under deformation and failure require an adequate description of structure evolution at different stages of deformation process.This description can be developed based on the results of statistical model of typical mesodefect ensemble proposed in the Institute of continuous media mechanics UB RAS.The model takes into account bulk and shear parts of defect density tensor.Defect evolution is described by kinetic equations for two structural parameters: second order defect density tensor and scalar parameter,depending on the ratio of two characteristic scales (the mean size of defects and mean distance between them).The numerical simulation of strain localization and crack propagation were carried out in the finite-element package Simulia Abaqus Student Edition using procedure UMAT and XFEM.
defect evolution energy dissipation numerical simulation
Anastasia Kostina Yuriy Bayandin Oleg Plekhov Oleg Naimark
Institute of continuous media mechanics UB RAS,Perm,614013,Russia
国际会议
北京
英文
1-10
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）