含泡沫金属夹层的自冲铆接头力学性能研究
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摘要
为研究含不同泡沫金属夹层的自冲铆接头的力学性能,在自冲铆接头中加入厚度相同的泡沫镍和泡沫铁镍夹层。对接头进行拉伸-剪切试验、电镜扫描和能谱分析,讨论影响自冲铆接头力学性能的各种因素。结果表明:泡沫金属夹层的加入可以影响SPR接头的内锁效果,对SPR接头的成形质量起到了积极的作用。加入泡沫铁镍的接头有效提高了峰值载荷,而泡沫镍夹层的加入可增加接头的最大破坏位移和能量吸收值。
The influence of different metallic foam inter-layer on the mechanical properties of SPR joints was investigated. The nickel and iron-nickel foams with same thickness were added in the joints as inter-layers. The tensile-shear test,SEM and EDX experiments were employed to discuss the influence. The results shows that the addition of metallic foam inter-layers can effectively affect the mechanical lock inside of SPR joint,and it can play a positive role in the forming quality of SPR joint.Sheets with iron-nickel foam inter-layers increase the peak load of the joints,and nickel foam inter-layers increase the maximum failure displacement and the energy absorption value.
The influence of different metallic foam inter-layer on the mechanical properties of SPR joints was investigated. The nickel and iron-nickel foams with same thickness were added in the joints as inter-layers. The tensile-shear test,SEM and EDX experiments were employed to discuss the influence. The results shows that the addition of metallic foam inter-layers can effectively affect the mechanical lock inside of SPR joint,and it can play a positive role in the forming quality of SPR joint.Sheets with iron-nickel foam inter-layers increase the peak load of the joints,and nickel foam inter-layers increase the maximum failure displacement and the energy absorption value.
引文
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[18]甘秋兰.泡沫金属的基本力学性质及本构关系[D].湘潭:湘潭大学,2004.
[2]HE Xiaocong.Finite element analysis of laser welding:A state of art review[J].Materials and Manufacturing Processes,2012,27(12):1354-1365.
[3]JACEK Mucha.The failure mechanics analysis of the solid selfpiercing riveting joints[J].Engineering Failure Analysis,2015,47:77-88.
[4]HOANG N H,HOPPERSTAD O S,LANGSETH M,et al.Failure of aluminium self-piercing rivets:An experimental and numerical study[J].Materials and Design,2013,49:323-335.
[5]SU Zhengming,LIN Paichen,LAI Weijen,et al.Fatigue analyses of self-piercing rivets and clinch joints in lap-shear specimens of aluminum sheets[J].International Journal of Fatigue,2015,72:53-65.
[6]KIM J,KIM H.Fatigue behaviour of clinched joints in a steel sheet[J].Fatigue and Fracture of Engineering Materials and Structures,2015,38(6):661-672.
[7]HE Xiaocong,LEI Lei,ZHANG Yue,et al.Mechanical properties and fracture analysis of clinched joints in titanium sheet materials[J].Acta Physica Polonica A,2017,131:16-19.
[8]ESHTAYEH M M,HRAIRI M,MOHIUDDIN A K M.Clinching process for joining dissimilar materials:State of the art[J].The International Journal of Advanced Manufacturing Technology,2016,82:179-195.
[9]JIANG X,QIANG X,KOLSTEIN M H,et al.Experimental investigation on mechanical behaviour of FRP-to-steel adhesively-bonded joint under combined loading-part 2:After hygrothermal ageing[J].Composite Structures,2015,125:687-697.
[10]SALEH P,CHALLITA G,KHALIL K.Stress concentration coefficient in a composite double lap adhesively bonded joint[J].International Journal of Adhesion and Adhesives,2015,63:102-107.
[11]SAMARATUNGA D,JHA R,GOPALAKRISHNAN S.Wave propagation analysis in adhesively bonded composite joints using the wavelet spectral finite element method[J].Composite Structures,2015,122:271-283.
[12]KANG S Y,KIM H K.Fatigue strength evaluation of selfpiercing riveted Al-5052 joints under different specimen configurations[J].International Journal of Fatigue,2015,80:58-68.
[13]PICKIN C G,YOUNG K,TUERSLEY I.Joining of lightweight sandwich sheets to aluminium using self-pierce riveting[J].Materials and Design,2007,28:2361-2365.
[14]LI Huang,BONNEN John,LASECKI John,et al.Fatigue and fretting of mixed metal self-piercing riveted joint[J].International Journal of Fatigue,2016,83(2):230-239.
[15]JACOB Marx,AFSANEH Rabiei.Overview of composite metal foams and their properties and performance[J].Advanced Engineering Materials,2017,19(11):1600776.
[16]GüLLü?,KILICOGLU T,TüRüT A.Electronic properties of the metal/organic interlayer/inorganic semiconductor sandwich device[J].Journal of Physics and Chemistry of Solids,2010,71(3):351-356.
[17]RAMAMURTY U,PAUL A.Variability in mechanical properties of a metal foam[J].Acta Materialia,2004,52(4):869-876.
[18]甘秋兰.泡沫金属的基本力学性质及本构关系[D].湘潭:湘潭大学,2004.