AH36船用高强钢焊接残余应力释放的数值模拟与试验分析
|
摘要
为了解焊接残余应力及其释放规律,基于顺序耦合热力学有限元方法对ABAQUS软件进行二次开发,模拟平板对接焊的焊接过程,计算焊接残余应力分布及其在0.8σ_s循环拉伸载荷作用下的释放情况,同时开展相应的试验研究,验证有限元计算方法的有效性。讨论循环载荷大小对残余应力释放的影响,计算3种不同水平载荷下焊接残余应力释放情况,得出AH36钢对接焊平板残余应力释放计算公式,通过对比有限元计算结果与试验结果,表明残余应力释放公式具有较好的计算精度,可以用于估算不同载荷作用后焊接残余应力的释放。
In order to understand the welding residual stress and its release rule, based on the sequential coupled thermo-dynamic finite element method, the ABAQUS software was used to simulate the welding process of butt welding of the flat plate, and the distribution of welding residual stress and its release under cyclic tensile load of 0.8σ_s were calculated. The residual stress test and release test of flat butt welding were carried out to verify the effectiveness of the calculation method. The influence of cyclic load on residual stress release was discussed. The residual stress release of welding under three different horizontal loads was calculated to obtain the calculation formula of residual stress release of butt welded plate of AH36 steel. This formula was proved to have good calculation accuracy compared with the finite element method results and the experiment results, which can be used to estimate the release of welding residual stress after different loads.
In order to understand the welding residual stress and its release rule, based on the sequential coupled thermo-dynamic finite element method, the ABAQUS software was used to simulate the welding process of butt welding of the flat plate, and the distribution of welding residual stress and its release under cyclic tensile load of 0.8σ_s were calculated. The residual stress test and release test of flat butt welding were carried out to verify the effectiveness of the calculation method. The influence of cyclic load on residual stress release was discussed. The residual stress release of welding under three different horizontal loads was calculated to obtain the calculation formula of residual stress release of butt welded plate of AH36 steel. This formula was proved to have good calculation accuracy compared with the finite element method results and the experiment results, which can be used to estimate the release of welding residual stress after different loads.
引文
[1] WEBSTER GA, EZEILO A N. Residual stress distribution and their influence onfatigue lifetimes[J]. International journal of fatigue 2001,23(1):375-383.
[2] TORRES MAS, Voorwald H J C.An evaluation of shot peening, residual stress andstress relaxation on the fatigue life of AISI 4340 steel[J].International Journal of fatigue,2002,24(8):877-886.
[3] 叶其根,董玲萱.长厚板焊接残余应力释放的研究[J].焊接学报,1993(3):155-161.
[4] 王者昌.关于焊接残余应力消除原理的探讨[J].焊接学报,2000,21(2):55-58.
[5] SMITH D J, FARRAHI G H, ZHU W X, et al. Experimental measurement andfinite element simulation of the interaction between residual stresses andmechanical loading[J].International Journal of Fatigue,2001,23(4):293-302.
[6] 张丽华,黄一,刘刚,等.交变载荷作用下焊接残余应力场的特性研究[J].造船技术,2009(5):28-31.
[7] TORIBIO J, LORENZO M, VERGARA D, et al. Residual stress redistribution induced by fatigue in cold-drawn prestressing steel wires[J]. Construction Build Mater,2016,114(6):317-322.
[8] LEE Ching Hyung, CHANG Kyong-Ho,VUONG NGUYEN VAN DO. Finite element modeling of residual stress relaxation in steel butt weldsunder cyclic loading[J]. Engineering Structures,2015(103):63-71.
[9] 李良碧,张沛心,周宏.平板焊接接头裂纹扩展中残余应力重分布的数值模拟[J].电焊机,2015,45(8):90-96.
[10] CHO Jinwoo, LEE Chin Hyung. FE analysis of residual stress relaxation in agirth-welded duplex stainless steel pipe under cyclic loading[J]. International Journal of Fatigue,2016,82(10):462-473.
[11] XIE Xue fang, JIANG Wenchun, YUN Luoetcl. A model to predict the relaxation of weld residual stress by cyclic load:Experimental and finite element modeling [J]. International Journal of Fatigue,2017,95(5):293-301.
[12] 陆雪冬.AH36薄板焊接质量控制技术研究[D]. 镇江:江苏科技大学, 2012.
[2] TORRES MAS, Voorwald H J C.An evaluation of shot peening, residual stress andstress relaxation on the fatigue life of AISI 4340 steel[J].International Journal of fatigue,2002,24(8):877-886.
[3] 叶其根,董玲萱.长厚板焊接残余应力释放的研究[J].焊接学报,1993(3):155-161.
[4] 王者昌.关于焊接残余应力消除原理的探讨[J].焊接学报,2000,21(2):55-58.
[5] SMITH D J, FARRAHI G H, ZHU W X, et al. Experimental measurement andfinite element simulation of the interaction between residual stresses andmechanical loading[J].International Journal of Fatigue,2001,23(4):293-302.
[6] 张丽华,黄一,刘刚,等.交变载荷作用下焊接残余应力场的特性研究[J].造船技术,2009(5):28-31.
[7] TORIBIO J, LORENZO M, VERGARA D, et al. Residual stress redistribution induced by fatigue in cold-drawn prestressing steel wires[J]. Construction Build Mater,2016,114(6):317-322.
[8] LEE Ching Hyung, CHANG Kyong-Ho,VUONG NGUYEN VAN DO. Finite element modeling of residual stress relaxation in steel butt weldsunder cyclic loading[J]. Engineering Structures,2015(103):63-71.
[9] 李良碧,张沛心,周宏.平板焊接接头裂纹扩展中残余应力重分布的数值模拟[J].电焊机,2015,45(8):90-96.
[10] CHO Jinwoo, LEE Chin Hyung. FE analysis of residual stress relaxation in agirth-welded duplex stainless steel pipe under cyclic loading[J]. International Journal of Fatigue,2016,82(10):462-473.
[11] XIE Xue fang, JIANG Wenchun, YUN Luoetcl. A model to predict the relaxation of weld residual stress by cyclic load:Experimental and finite element modeling [J]. International Journal of Fatigue,2017,95(5):293-301.
[12] 陆雪冬.AH36薄板焊接质量控制技术研究[D]. 镇江:江苏科技大学, 2012.