轻工机械2018，Vol.36Issue(2)：6-10,24,6.DOI:10.3969/j.issn.1005-2895.2018.02.002
低屈服钢拉伸试验与数值研究
Tensile Test and Numerical Study of Low Yield Steel
摘要
Abstract
The mechanical behavior of low yield steel under tensile loading was investigated by test and numerical analysis.First of all, the uniaxial tensile test was carried out with the standard bar specimens, and the force-displacement curve,ductility and fracture mode were analyzed.Secondly,the real stress-strain data of material necking were calculated by the power law and the weighted average method respectively.Finally, the extended finite element method was adopted to simulate the tests including the deformation,necking and the fracture behavior of the specimen. By comparing with the experimental data, the real stress-strain data after necking obtained by the weighted average method is consistent with the actual test, which shows that the extended finite element method would be served as an efficient tool to simulate and predict the whole process of the uniaxial tensile behavior of low yield steel.关键词
低屈服钢/拉伸试验/颈缩/真实应力-应变/断裂/扩展有限元法Key words
low yield steel/tensile test/necking/true stress-strain/fracture/extended FEM(finite element method)分类
通用工业技术引用本文复制引用
孙家旺,于培师,张超锋,赵军华..低屈服钢拉伸试验与数值研究[J].轻工机械,2018,36(2):6-10,24,6.基金项目
国家自然科学基金资助项目(11302067). （11302067）
