摘要
对船用高强度钢对接焊平板进行焊接残余应力数值模拟,采用盲孔法对其进行残余应力测量,最后在数值模拟结果与试验结果一致的基础上,研究不同焊接工艺参数对残余应力的影响。研究结果表明:焊接残余应力分布曲线形状不受焊接工艺参数变化的影响;当增大焊接电流时,焊接残余应力最大值随之增大;当焊接电流增大到一定值后,焊接残余应力最大值随电流升高而增大的趋势逐渐减缓;当焊接电流在100～110A时,焊接残余应力最大值随焊接速度加快而增大;在120～130A时,焊接残余应力最大值随焊接速度加快而逐渐变小,但其值还是远大于焊接电流在100～110A工况时的焊接残余应力。此结论为高强度钢对接焊平板的焊接工艺参数设计提供了参考,具有一定的工程应用价值。
Numerical simulation analysis of the butt welded plate of high strength steel for ship is carried out. The method of blind hole is used to measure the residual stress. The influence of different welding process parameters on the residual stress is studied based on the agreement of the simulation results and the experimental results. The research results show that the shape of the distribution curve of the welding residual stress is not affected by the change of welding process parameters. However, when the welding current is increased, the maximum welding residual stress increases. When the welding current is increased to certain value, the rising trend of the maximal welding residual stress gradually slows down. When the range of welding current is from 100 A to 110 A, the maximal value of the welding residual stress increases with the increase of the welding speed. By contract, the maximum welding residual stress gradually reduces with the increase of the welding speed under the condition from 120 A to 130 A welding current, but its value is far greater than that under the condition from 100 A to 110 A welding current. The relevant conclusions provide reference for the design of welding process parameters in butt welded plate of high strength steel, which provides certain engineering application value.
作者
谷晓梅
张晓飞
宋彦宏
GU Xiaomei;ZHANG Xiaofei;SONG Yanhong(The 711th Institute of China,China Shipbuilding Industry Corporation,Shanghai,201108,China;School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,Jiangsu,China;School of Marine Power,Army Military Transportation University,Zhenjiang 212003,Jiangsu,China)
出处
《中国海洋平台》
2019年第2期86-94,共9页
China offshore Platform
基金
国家自然科学基金资助项目(51479084)
关键词
焊接工艺参数
高强度钢
残余应力
数值模拟
welding process parameter
high strength steel
residual stress
numerical simulation
作者简介
谷晓梅(1991-),女,硕士研究生,主要从事隔振装置相关研究工作,Email:630100595@qq.com.
