三层钢板胶焊熔核形成过程的有限元分析
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摘要
基于ANSYS有限元分析软件,将胶层引起的钢板间接触电阻进行参数化处理,建立了考虑胶层作用的三层钢板胶焊熔核形成过程的多物理场耦合模型,从结构场、电场、温度场分布等方面分析三层钢板胶焊熔核的形成特点,并通过实验验证了所建模型的可靠性.结果表明:对于厚度为0.8 mm DC04低碳钢、厚度1.4 mm DP600双相钢和厚度1.8 mm DP780双相钢的三层钢板胶焊,胶层使得相同电流下三层钢板胶焊熔核的形成时刻比无胶层的点焊熔核的形成时刻提前了约40 ms;在DP600双相钢与DP780双相钢接触面的熔核形成时刻比在DC04低碳钢与DP600双相钢接触面的熔核形成时刻提前约80 ms.
Based on the ANSYS software, a multi-physics finite element model was established to research the weld nugget formation during the weld-bonding process of three stacks of steel sheets. The contact resistance between the steel sheets with the adhesive was parameterized in this model to illustrate the effect of the adhesive on the weld-bonding process. The calculation results in the structure, electric and thermal field during the weld nugget formation were investigated and validated by the experiment. The research results show that the weld nugget formation in the weld-bonding joint with 0.8 mm DC04, 1.4 mm DP600 and 1.8 mm DP780 is about 40 ms earlier than that in the resistance spot welding joint under the same welding condition. The weld nugget formation between DP600 and DP780 is 80 ms earlier than that between DC04 and DP600 during the weld-bonding process.
Based on the ANSYS software, a multi-physics finite element model was established to research the weld nugget formation during the weld-bonding process of three stacks of steel sheets. The contact resistance between the steel sheets with the adhesive was parameterized in this model to illustrate the effect of the adhesive on the weld-bonding process. The calculation results in the structure, electric and thermal field during the weld nugget formation were investigated and validated by the experiment. The research results show that the weld nugget formation in the weld-bonding joint with 0.8 mm DC04, 1.4 mm DP600 and 1.8 mm DP780 is about 40 ms earlier than that in the resistance spot welding joint under the same welding condition. The weld nugget formation between DP600 and DP780 is 80 ms earlier than that between DC04 and DP600 during the weld-bonding process.
引文
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[12] SHEN J,ZHANG Y S,LAI X M,et al.Adhesive placement in weld-bonding of multiple stacks of steel sheets [J].Welding Journal,2012,91(2):59-66.
[2] HAYAT F.Comparing properties of adhesive bonding,resistance spot welding,and adhesive weld bonding of coated and uncoated DP 600 steel [J].Journal of Iron and Steel Research (International),2011,18(9):70-78.
[3] 孙海涛,张延松,来新民,等.双相钢胶焊与电阻点焊接头性能对比分析[J].焊接学报,2009,30(10):17-20.SUN Haitao,ZHANG Yansong,LAI Xinmin,et al.Comparison of joint performance between weld-bonding and resistance spot welding of dual-phase steel [J].Transactions of the China Welding Institution,2009,30(10):17-20.
[4] COSTA H R M,REIS J M L,SOUZA J P B,et al.Experimental investigation of the mechanical beha-viour of spot welding-adhesives joints [J].Composite Structures,2015,133:847-852.
[5] 王华锋,王宏雁,陈君毅.胶接、胶焊与点焊接头剪切拉伸疲劳行为[J].同济大学学报(自然科学版),2011,39(3):421-426.WANG Huafeng,WANG Hongyan,CHEN Junyi.Shear tension fatigue behavior of bonded joint,weldbonded joint and spot-welded joint [J].Journal of Tongji University (Natural Science),2011,39(3):421-426.
[6] 肖智杰,曾凯,何晓聪,等.SUS304不锈钢点焊与胶焊接头的疲劳强度分析[J].材料导报,2017,31(16):112-116.XIAO Zhijie,ZENG Kai,HE Xiaocong,et al.Fatigue strength analysis of spot weld and weld-bonded joint for SUS304 stainless steel [J].Materials Review,2017,31(16):112-116.
[7] BARTCZAK B,MUCHA J,TRZEPIECINSKI T.Stress distribution in adhesively-bonded joints and the loading capacity of hybrid joints of car body steels for the automotive industry [J].International Journal of Adhesion and Adhesives,2013,45(9):42-52.
[8] FUJII T,TOHGO K,SUZUKI Y,et al.Fatigue strength and fatigue fracture mechanism of three-sheet spot weld-bonded joints under tensile-shear loading [J].International Journal of Fatigue,2016,87:424-434.
[9] HOU Z G,KIM I S,WANG Y X,et al.Finite element analysis for the mechanical features of resistance spot welding process [J].Journal of Materials Processing Technology,2007,185(1/2/3):160-165.
[10] 王敏,张海涛,潘华,等.DP590双相钢电阻点焊熔核形成过程的数值模拟[J].上海交通大学学报,2009,43(1):56-60.WANG Min,ZHANG Haitao,PAN Hua,et al.Numerical simulation of nugget formation in resistance spot welding of DP590 dual-phase steel [J].Journal of Shanghai Jiao Tong University,2009,43(1):56-60.
[11] 沈洁.差强差厚多层汽车钢板胶焊熔核形成机理及工艺优化[D].上海:上海交通大学,2011.SHEN Jie.Study on weld nugget formation and process optimization in weld-bonding of multiple steel sheets[D].Shanghai:Shanghai Jiao Tong University,2011.
[12] SHEN J,ZHANG Y S,LAI X M,et al.Adhesive placement in weld-bonding of multiple stacks of steel sheets [J].Welding Journal,2012,91(2):59-66.