构架侧梁焊接反变形量的优化分析_赵利华.pdfVIP

45 11 上 海 交 通 大 学 学 报 V ol. 45 N o . 11 20 11 11 JO U RN A L OF SH A N GH AI JIA O T O NG U N IV ERSIT Y N ov . 20 11 : 1006- 2467 ( 2011 11- 1700- 05 赵利华, 张开林 ( , 610031 : 以热弹塑性理论为基础, 采用A PD L 语言对机车车辆 架侧梁进行了焊接变形数值仿真 计算, 并对侧梁进行现场跟踪测量. 得出了侧梁的焊接变形仿真计算结果与测量值, 两者基本吻合, 误差在6% 之内. 以此仿真模型为基础, 结合所制定的反变形方案, 采用多层优化计算, 对侧梁焊接 时的反变形量进行数值仿真优化, 最优方案与无反变形量的焊接相比, 可使弯曲变形量减低65% 左右. 优化方案可为焊接变形的控制焊接工艺设计的选择和预留变形量的确定等提供可靠依据. : 焊接变形; 数值仿真; 逐 一反变形法; 优化分析 : T G 404 : A Opt imization Analysis of Welding Reverse Deformation for t he Side Beam of Bogie Frame ZH A O L i-hua, ZH A N G K a i-l in ( T ract ion Po w er Stat e Key Laborat ory, Sout hw est Jiaot ong U niv ersity , Cheng du 610031, China Abstract: Based on t he t herm al- elast ic- plast ic t heo ry, t he w elding residual def orm at ion. s numerical sim ula- t ion w as done w ith A PDL and t he f ield t racking m easurement w as also made w it h t he side beam. It w as concluded t hat t he com put at ion result is basically co nsist ent w ith t he m easured dat a and t he er ror is w it hin 6% . On t he basis of t he numerical simulat ion m odel, and co mbined w ith t he schem e o f reverse def orma- t ion, mult-i lay er optim iz ing co mput er w as utilized, t he opt im ization analysis of t he reverse defor mat io n w as done w it h numerical simulat ion m odel, t he o pt imum schem e w as obt ained. Com pared w it h t he w elding w it ho ut r ev erse def ormat ion, t he opt im um scheme can make bend defo rmat ion reduce about 65% . T he opt im um scheme pro vides r eliable theoret ical references f or cont rolling