Finite Element Simulation for Welding Deformation and Residual Stress in Pressure Wheel of Road Roller
摘 要
基于热弹塑性理论,借助有限元分析方法,建立了压路机压轮的有限元模型,模拟了压轮焊后的变形和残余应力分布;采用盲孔法测试了压轮的残余应力,并与模拟结果进行了对比。结果表明:两封口板发生焊后变形呈外凸状,最大变形量为5.732 mm;压轮焊后起收弧位置和焊缝位置的残余应力大,应力峰值为416.40 MPa;随着距卷圆板自由边距离的增大,卷圆板直焊缝中心位置的残余应力先增大后减小再增大,残余应力测试值与模拟值较吻合,证明了模拟结果的准确性。
Abstract
On the basis of thermo elastic plastic theory and finite element analysis method, the finite element model of the press wheel was established and the welding deformation and residual stress distributions of the pressure wheel were simulated. The residual stresses of the pressure wheel were measured by a blind-hole method and compared with those by simulation. The results show that two sealing plates had a convex shape due to the welding deformation. The maximum deformation amount was 5.732 mm. The residual stresses at the welding arc and weld seam of the pressure wheel after welding were relatively large. The peak value of stresses was 416.40 MPa. With increasing distance from the free edge of circular plate, the residual stress at the straight weld center of the circular plate first increased then decreased and then increased. The measured residual stresses coincided well with those from the simulation, indicating the accuracy of the simulation.
中图分类号 TG404 DOI 10.11973/jxgccl201711016
所属栏目 物理模拟与数值模拟
基金项目 国家科技支撑计划项目(2015BAF07B02)
收稿日期 2016/11/10
修改稿日期 2017/8/26
网络出版日期
作者单位点击查看
备注房元斌(1985-),男,山东威海人,工程师,硕士
引用该论文: FANG Yuanbin,WANG Yong,WANG Can,LU Yongneng. Finite Element Simulation for Welding Deformation and Residual Stress in Pressure Wheel of Road Roller[J]. Materials for mechancial engineering, 2017, 41(11): 82~85
房元斌,王勇,王灿,陆永能. 压路机压轮焊接变形和残余应力的有限元模拟[J]. 机械工程材料, 2017, 41(11): 82~85
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参考文献
【1】王文,周建新,庞盛永.铸钢件窄长缺陷补焊过程中热应力及变形行为的有限元模拟[J].机械工程材料,2016,40(9): 31-37.
【2】DENG D, SHOICHI K, KAZUO H, et al. Predicting welding residual stresses in a dissimilar metal girth welded pipe using 3D finite element model with a simplified heat source[J]. Nuclear Engineering and Design, 2011,241: 46-54.
【3】蔡志鹏. 大型结构焊接变形数值模拟的研究与应用[D]. 北京:清华大学,2001.
【4】MOCHIZUKI M, MIKAMI Y, YAMASAKI H, et al. Elastic predicting method of weld distortion of large structures using numerical simulation results by thermal-elastic-plastic analysis of small components[J]. Welding in the World, 2007,51(11/12): 60-64.
【5】蔡志鹏,赵海燕,吴甦,等.利用相似理论预测焊接变形的研究[J].机械工程学报,2002,38(5): 141-144.
【6】杨秦政,李晓延,张亮.厚壁316LN不锈钢管焊接接头中残余应力的有限元模拟[J].机械工程材料,2017,41(3): 93-97.
【7】房元斌,张贵芝,张立平,等.Q890D高强钢中厚板焊接接头残余应力的有限元模拟[J].机械工程材料,2016,40(9): 73-76.
【8】GOLDAK J. Modeling thermal stresses and distortions in welds[M]. Ohio: ASM International, 1990:71-82.
【2】DENG D, SHOICHI K, KAZUO H, et al. Predicting welding residual stresses in a dissimilar metal girth welded pipe using 3D finite element model with a simplified heat source[J]. Nuclear Engineering and Design, 2011,241: 46-54.
【3】蔡志鹏. 大型结构焊接变形数值模拟的研究与应用[D]. 北京:清华大学,2001.
【4】MOCHIZUKI M, MIKAMI Y, YAMASAKI H, et al. Elastic predicting method of weld distortion of large structures using numerical simulation results by thermal-elastic-plastic analysis of small components[J]. Welding in the World, 2007,51(11/12): 60-64.
【5】蔡志鹏,赵海燕,吴甦,等.利用相似理论预测焊接变形的研究[J].机械工程学报,2002,38(5): 141-144.
【6】杨秦政,李晓延,张亮.厚壁316LN不锈钢管焊接接头中残余应力的有限元模拟[J].机械工程材料,2017,41(3): 93-97.
【7】房元斌,张贵芝,张立平,等.Q890D高强钢中厚板焊接接头残余应力的有限元模拟[J].机械工程材料,2016,40(9): 73-76.
【8】GOLDAK J. Modeling thermal stresses and distortions in welds[M]. Ohio: ASM International, 1990:71-82.
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