摘要
为研究夹杂物在车轮预成形过程中的演变行为,采用跨尺度有限元法建立车轮预成形二维轴对称宏观模型和含夹杂物体积元细观模型,对夹杂物变形进行仿真,考察夹杂物的变形抗力对夹杂物变形的影响。结果表明:夹杂物变形程度与其相对变形抗力λ呈负相关关系;车轮踏面下23.3 mm位置B,难变形夹杂物(λ=2)和易变形夹杂物(λ=1/2)均出现了应变集中,前者等效应变最大值为3.85、后者等效应变最大值为1.67;车轮踏面下23.3 mm位置B周向和轴向夹杂物有最大尺寸,车轮踏面下35.4 mm位置A及轮缘位置C和D周向和径向夹杂物有最大尺寸,从垂直于最大尺寸方向的方向进行探伤有利于鉴别夹杂物尺寸。
In order to study the evolution behavior of inclusions in the preforming process of the wheel,the cross-scale finite element method was used to establish the two-dimensional axisymmetric macro-model of the wheel preforming and the micro-model of the volume element containing inclusions.The deformation of inclusion was simulated,and the influence of inclusion deformation resistance on inclusion deformation was investigated.The results show that the degree of inclusion deformation has a negative correlation with the relative deformation resistanceλvalue.At position B of the wheel tread down 23.3 mm,the strain concentration occurs in both the hard inclusion(λ=2)and the soft inclusion(λ=1/2),the maximum equivalent strain of the former is 3.85 and the maximum equivalent strain of the latter is 1.67.The circumferential and axial inclusions have the maximum size at the position B of the wheel tread down 23.3 mm,and the circumferential and radial inclusions have the maximum size at position A of the wheel tread down 35.4 mm,and at positions C and D of the rim,the flaw detection from the direction of vertical maximum dimension is beneficial to identify the inclusion size.
作者
晏安昌
张磊
晁思佳
肖峰
夏俊超
沈晓辉
YAN Anchang;ZHANG Lei;CHAO Sijia;XIAO Feng;XIA Junchao;SHEN Xiaohui(School of Metallurgical Engineering,Anhui University of Technology,Maanshan 243032,China;Masteel Rail Transit Materials Technology Co.,Ltd,Baowu Group,Maanshan 243010,China)
出处
《安徽工业大学学报（自然科学版）》
CAS
2022年第1期1-6,14,共7页
Journal of Anhui University of Technology（Natural Science）
基金
国家自然科学基金钢铁联合基金项目(U1860105)。
关键词
车轮预成形
夹杂物变形
跨尺度仿真
wheel preforming
deformation of inclusion
cross-scale simulation
