航空铆钉连接件的抗冲击性能
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摘要
以分离式Hopkinson拉杆装置为基础,设计了特殊的铆接试验件,对MS20615铆钉的铆接结构开展了动态加载下不同加载角度、不同加载速率的力学性能试验。结合其准静态试验结果,获得了铆接结构在纯剪切、30°拉剪耦合、45°拉剪耦合、60°拉剪耦合和纯拉伸试验下的力学性能参数。试验结果表明,加载角度、加载速率对铆接结构的失效载荷与失效模式有显著的影响。在试验结果的基础上,使用有限元软件LS-Dyna建立了铆接结构的简化模型,对比了试验和数值模拟得到的铆接结构载荷-位移曲线,并对简化数值模型进行了网格相关性分析,验证了简化的铆钉单元模型的可行性。
Using the split Hopkinson tensile bar device,a series of special riveting specimens for MS20615 rivet are designed,and the dynamic mechanical tests of riveting structures are performed under different loading angles and loading rates.In addition,the quasi-static mechanical properties of riveting structures are also obtained by conducting tests of the pure shear,30°tension-shear coupling,45°tension-shear coupling,60°tension-shear coupling,and pure tension.Results show that the failure modes of riveting structures are significantly influenced by the loading angles and loading rates.Moreover,using the financial software LS-Dyna,the simplified finite element models(FE models)are established.The comparisons of force-displacement curves for the experiments and simulations are conducted to verify the feasibility of the simplified model.Meanwhile,the mesh correlation analysis is also performed as a supplementary verification.
Using the split Hopkinson tensile bar device,a series of special riveting specimens for MS20615 rivet are designed,and the dynamic mechanical tests of riveting structures are performed under different loading angles and loading rates.In addition,the quasi-static mechanical properties of riveting structures are also obtained by conducting tests of the pure shear,30°tension-shear coupling,45°tension-shear coupling,60°tension-shear coupling,and pure tension.Results show that the failure modes of riveting structures are significantly influenced by the loading angles and loading rates.Moreover,using the financial software LS-Dyna,the simplified finite element models(FE models)are established.The comparisons of force-displacement curves for the experiments and simulations are conducted to verify the feasibility of the simplified model.Meanwhile,the mesh correlation analysis is also performed as a supplementary verification.
引文
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[23]张旭.电磁铆接过程铆钉动态塑性变形行为及组织性能研究[D].哈尔滨:哈尔滨工业大学,2016.ZHANG X.Research on dynamic plastic deformation behavior and microstructure and mechanical properties of rivets in elec-tromagnetic riveting[D].Harbin:Harbin Institute of Technology,2016(in Chinese).
[24]《航空制造工程手册》总编委会.航空制造工程手册[M].北京:航空工业出版社,1997.Aviation Manufacturing Engineering Manual Editorial Board.Aviation manufacturing engineering manual[M].Beijing:Aviation Industry Press,1997(in Chinese).
[25] KOLSKY H.An investigation of the mechanical properties of materials at very high rates of loading[J].Proceedings of the Physical Society B,1949,62(11):676.
[26]张盛,李新文,杨向浩.线性增加冲击荷载作用下圆盘试样的动态应力平衡[J].中国有色金属学报,2014,24(1):75-81.ZHANG S,LI X W,YANG X H.Dynamic stress equilibrium of disc specimen under linear increase impact loading[J].The Chinese Journal of Nonferrous Metals,2014,24(1):75-81(in Chinese).
[2]吴建国.裂纹扩展与损伤演化理论与应用研究[D].北京:北京航空航天大学,2009:119.WU J G.Theoretical and applied research on crack growth and damage evolution[D].Beijing:Beihang University,2009:119(in Chinese).
[3]崔卫民,杨智春,诸强.离散源撞击下结构生存力研究中的若干问题初探[J].机械科学与技术,2000(S1):70-71.CUI W M,YANG Z C,ZHU Q.Studies on several problems of structure survivability subjected to discrete impact[J].Mechanical Science and Technology,2000(S1):70-71(in Chinese).
[4] PORCARO R,HANSSEN A G,AALBERG A,et al.Joining of aluminum using self-piercing riveting:Testing,modelling and analysis[J].International Journal of Crashworthiness,2004,9(2):141-154.
[5] PORCARO R,HANSSEN A G,LANGSETH M,et al.The behaviour of a self-piercing riveted connection under quasi-static loading conditions[J].International Journal of Solids&Structures,2006,43(17):5110-5131.
[6] PORCARO R,HANSSEN A G,LANGSETH M,et al.An experimental investigation on the behaviour of selfpiercing riveted connections in aluminium alloy AA6060[J].International Journal of Crashworthiness,2006,11(5):397-417.
[7] LENNON R,PEDRESCHI R,SINHA B P.Comparative study of some mechanical connections in cold formed steel[J].Construction&Building Materials,1999,13(3):109-116.
[8] LORENZO G D,LANDOLFO R.Shear experimental response of new connecting systems for cold-formed structures[J].Journal of Constructional Steel Research,2004,60(3):561-579.
[9] SUN X,STEPHENS E V,KHALEEL M A.Fatigue behaviours of self-piercing rivets joining similar and dissimilar sheet metals[J].International Journal of Fatigue,2007,29(2):370-386.
[10] LI B,FATEMI A.An experimental investigation of deformation and fatigue behavior of coach peel riveted joints[J].International Journal of Fatigue,2006,28(1):9-18.
[11] LI Q M,MINES R A W,BIRCH R S.Static and dynamic behaviour of composite riveted joints in tension[J].International Journal of Mechanical Sciences,2001,43(7):1591-1610.
[12] WOOD P K C,SCHLEY C A,WILLIAMS M A,et al.A model to describe the high rate performance of selfpiercing riveted joints in sheet aluminum[J].Materials&Design,2011,32(4):2246-2259.
[13] LIU X C,GUO C Y,BAI C,et al.Drop test and crash simulation of a civil airplane fuselage section[J].Chinese Journal of Aeronautics,2015,28(2):447-456.
[14] PORCARO R,LANGSETH M,HANSSEN A G,et al.Crashworthiness of self-piercing riveted connections[J].International Journal of Impact Engineering,2008,35(11):1251-1266(in Chinese).
[15] LANGRAND B,PATRONELLI L,DELETOMBE E,et al.An alternative numerical approach for full scale characterisation for riveted joint design[J].Aerospace Science&Technology,2002,6(5):343-354.
[16] LANGRAND B,PATRONELLI L,DELETOMBE E,et al.Full scale experimental characterisation for riveted joint design[J].Aerospace Science&Technology,2002,6(5):333-342.
[17] LANGRAND B,DELETOMBE E,MARKIEWICZ E,et al. Numerical approach for assessment of dynamic strength for riveted joints[J].Aerospace Science&Technology,1999,3(7):431-446.
[18] LANGRAND B,DELETOMBE E,MARKIEWICZ E,et al.Riveted joint modeling for numerical analysis of airframe crashworthiness[J].Finite Elements in Analysis&Design,2001,38(1):21-44.
[19] ANDRIEUX F,SUN D Z,RIEDEL H.Development and application of a micromechanical model for description of the growth and coalescence of spheroidal voids[C]∥4th International Forum on Advanced Material Science and Technology,2014.
[20] SOMMER S.Modeling of the fracture behavior of spot welds using advanced micro-mechanical damage models[J].Materials Science and Engineering,2010,10(1):012057.
[21] HANSSEN A G,OLOVSSON L,PORCARO R,et al.A large-scale finite element point-connector model for selfpiercing rivet connections[J].European Journal of Mechanics-A/Solids,2010,29(4):484-495.
[22] HUANG L,MORAES J F C,SEDIAKO D,et al.Finite element and residual stress and analysis of self-pierce riveting in dissimilar metal sheets[J].Journal of Manufacturing Science&Engineering,2017,139(2):021007.
[23]张旭.电磁铆接过程铆钉动态塑性变形行为及组织性能研究[D].哈尔滨:哈尔滨工业大学,2016.ZHANG X.Research on dynamic plastic deformation behavior and microstructure and mechanical properties of rivets in elec-tromagnetic riveting[D].Harbin:Harbin Institute of Technology,2016(in Chinese).
[24]《航空制造工程手册》总编委会.航空制造工程手册[M].北京:航空工业出版社,1997.Aviation Manufacturing Engineering Manual Editorial Board.Aviation manufacturing engineering manual[M].Beijing:Aviation Industry Press,1997(in Chinese).
[25] KOLSKY H.An investigation of the mechanical properties of materials at very high rates of loading[J].Proceedings of the Physical Society B,1949,62(11):676.
[26]张盛,李新文,杨向浩.线性增加冲击荷载作用下圆盘试样的动态应力平衡[J].中国有色金属学报,2014,24(1):75-81.ZHANG S,LI X W,YANG X H.Dynamic stress equilibrium of disc specimen under linear increase impact loading[J].The Chinese Journal of Nonferrous Metals,2014,24(1):75-81(in Chinese).