压力容器Issue(5)：13-22,10.DOI:10.3969/j.issn.1001-4837.2014.05.002
25 Cr2 Ni2 MoV钢焊接接头循环变形行为的有限元模拟与分析
Numerical Simulation and Analysis for Cyclic Deformation of 25 Cr2 Ni2 MoV Welded Joint
摘要
Abstract
Based on the Chaboche cyclic plastic constitutive model,the cyclic deformation behavior of the 25Cr2Ni2MoV turbine rotor steel plate welded joint of V-style has been simulated and analyzed by em-ploying the finite element code ABAQUS.In the simulations,the evolution features of local plastic deform-ation distribution in the joints and the influence of material properties of heat-affected-zone,groove an-gles and load levels (including stress ratio,mean stress and stress amplitude)on the cyclic deformation behavior of the joint were observed and discussed.It is shown that the tensile and ratcheting resistance of the plate welded joint increase with the increment of the elastic modulus ratio of the heat-affected-zone and base material and the decrease of the groove angles;the failure probability of the plate welded joint are increased while the heat-affected-zone elastic modulus,stress ratio,average stress and stress ampli-tude increasing.Moreover,based on the numerical results,the preliminary optimization of the plate welded joint were obtained,which is useful in the engineering design for the welded joints of such kind.关键词
焊接接头/循环变形/棘轮行为/有限元法/Chaboche模型Key words
welding joint/cyclic deformation/ratcheting behaviour/finite element method/Chaboche model分类
机械制造引用本文复制引用
张尚林,郭素娟,朱明亮,轩福贞..25 Cr2 Ni2 MoV钢焊接接头循环变形行为的有限元模拟与分析[J].压力容器,2014,(5):13-22,10.基金项目
中央高校基本科研业务费专项资金（222201314007）；中国博士后基金 （）
