复合材料单搭接胶接接头低速冲击数值模拟
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摘要
数值模拟研究了不同胶胶接的HTS40/977-2碳纤维层合板单搭接胶接接头低速冲击性能。对HTS40/977-2层合板冲击过程进行仿真,与实验对比验证了HTS40/977-2层合板材料参数的有效性。采用基于Hashin准则的本构关系模拟层合板面内损伤,采用内聚力单元模拟层合板的层间分离和胶层的失效,分别建立了Araldite AV138、Araldite2015和Sikaforce 7752三种不同胶胶接接头低速冲击有限元模型,研究了胶接接头在3 J和4 J能量冲击下的失效模式和能量吸收。在失效模式方面,发现Araldite AV138、Araldite 2015和Sikaforce 7752三种胶接接头胶层的失效模式分别为胶层完全失效、胶层部分失效和胶层未失效,三种胶接接头都出现了不同程度的层合板层间损伤,并且层间损伤依次减小。在能量吸收方面,3J能量冲击下Araldite AV138、Araldite 2015和Sikaforce 7752吸收能量分别为2. 73 J、2. 06 J、1. 67 J,4 J能量冲击下吸收能量分别为2. 91 J、2. 49 J、2. 26 J。仿真结果表明,在低速冲击载荷下胶接接头的失效模式和能量吸收与胶的属性密切相关。胶的韧度越低,接头损伤越严重,能量吸收越多;胶的韧度越高,接头抵抗损伤的能力越强。研究可为复合材料胶接设计与分析提供参考。
The low speed impact performances of HTS40/977-2 carbon fiber laminates single lap adhesively bonded joints were studied with numerical simulation using different adhesives. Firstly,the impact process of HTS40/999-2laminates was simulated,and the effectiveness of material parameters of HTS40/977-2 laminates was verified compared with the test results. Then the constitutive model based on Hashin criterion was used to simulate the inner damage of the laminates and the cohesive element was used to simulate separation of inter-laminate and failure of adhesive layer. The finite element models for adhesively bonded joints with different adhesives including Araldite AV138,Araldite 2015 and Sikaforce 7752 were established to study their adhesive layers' failure mode and energy absorption under impacts of 3 J and 4 J energy. It was shown that the failure modes of adhesively bonded joints of Araldite AV138,Araldite 2015 and Sikaforce 7752 are complete,partial and zero debonding between adhesive layers,respectively; different degrees of interlaminate damage are observed for these 3 joints and their damage degrees decrease in turn; the energy absorptions for joints of Araldite AV138,Araldite 2015 and Sikaforce 7752 under 3 J energy shock are 2. 73 J,2. 06 J and 1. 67 J,respectively; their energy absorptions under 4 J energy shock are 2. 91 J,2. 49 J and 2. 26 J,respectively. The simulation results indicated that the failure modes and energy absorptions of adhesively bonded joints are closely related to properties of adhesives under low-velocity impact; the lower the toughness of adhesive,the more serious the joints' damage and the more the energy absorption; the higher the toughness of adhesive,the stronger the joints' anti-damage ability; the study can provide a reference for design and analysis of composite material adhesive bonding.
The low speed impact performances of HTS40/977-2 carbon fiber laminates single lap adhesively bonded joints were studied with numerical simulation using different adhesives. Firstly,the impact process of HTS40/999-2laminates was simulated,and the effectiveness of material parameters of HTS40/977-2 laminates was verified compared with the test results. Then the constitutive model based on Hashin criterion was used to simulate the inner damage of the laminates and the cohesive element was used to simulate separation of inter-laminate and failure of adhesive layer. The finite element models for adhesively bonded joints with different adhesives including Araldite AV138,Araldite 2015 and Sikaforce 7752 were established to study their adhesive layers' failure mode and energy absorption under impacts of 3 J and 4 J energy. It was shown that the failure modes of adhesively bonded joints of Araldite AV138,Araldite 2015 and Sikaforce 7752 are complete,partial and zero debonding between adhesive layers,respectively; different degrees of interlaminate damage are observed for these 3 joints and their damage degrees decrease in turn; the energy absorptions for joints of Araldite AV138,Araldite 2015 and Sikaforce 7752 under 3 J energy shock are 2. 73 J,2. 06 J and 1. 67 J,respectively; their energy absorptions under 4 J energy shock are 2. 91 J,2. 49 J and 2. 26 J,respectively. The simulation results indicated that the failure modes and energy absorptions of adhesively bonded joints are closely related to properties of adhesives under low-velocity impact; the lower the toughness of adhesive,the more serious the joints' damage and the more the energy absorption; the higher the toughness of adhesive,the stronger the joints' anti-damage ability; the study can provide a reference for design and analysis of composite material adhesive bonding.
引文
[1]游敏,郑小玲.胶接强度分析及应用[M].武汉:华中科技大学出版社,2009.
[2]梁祖典,燕瑛,张涛涛,等.复合材料单搭接胶接接头试验研究与数值模拟[J].北京航空航天大学学报,2014,40(12):1786-1792.LIANG Zudian,YAN Ying,ZHANG Taotao,et al.Experimental investigation and numerical simulation of composite laminate adhesively bonded single-lap joints[J].Journal of Beijing University of Aeronautics and Astronautics,2014,40(12):1786-1792.
[3]GOLAND M,REISSNER E.The stresses in cemented joints[J].Journal of Applied Mechanics,1944,11(1):A17-A27.
[4]HART-SMITH L J.Adhesive-bonded single-lap joints[M].Hampton,VA:Langley Research Center,1973.
[5]DELALE F,ERDOGAN F,AYDINOGLU M N.Stresses in adhesively bonded joints:a closed-form solution[J].Journal of Composite Materials,1981,15(3):249-271.
[6]DATTAGURU B,EVERETT A R.Geometrically nonlinear analysis of adhesively bonded joints[J].Journal of Engineering Materials&Technology,1984,106(1):59-65.
[7]YANG C,PANG S S.Stress-strain analysis of adhesivebonded single-lap composite joints under cylindrical bending[J].Composites Engineering,1993,3(11):1051-1063.
[8]YANG C,PANG S S.Stress-strain analysis of single-lap composite joints under tension[J].Journal of Engineering Materials and Technology,1996,118(2):247-255.
[9]YANG C,HUANG H,TOMBLIN J S,et al.Elastic-plastic model of adhesive-bonded single-lap composite joints[J].Journal of Composite Materials,2004,38(4):293-309.
[10]陈煊,李玉龙,史飞飞,等.板厚、温度和速度对单搭接胶接接头强度的影响[J].爆炸与冲击,2009,29(5):449-456.CHEN Xuan,LI Yulong,SHI Feifei,et al.Influences of adherent thickness,temperature and velocity on strength of adhesively-bonded single-lap joints[J].Explosion and Shock Waves,2009,29(5):449-456.
[11]郑小玲,娜日松,游敏,等.胶瘤对单搭接胶接接头强度的影响[J].三峡大学学报(自然科学版),2001,23(6):530-532.ZHENG Xiaoling,NA Risong,YOU Min,et al.Influence of fillet on strength of lap joints[J].Journal of China Three Gorges University(Natural Sciences),2001,23(6):530-532.
[12]KADIOGLU F,ADAMS R D.Flexible adhesives for automotive application under impact loading[J].International Journal of Adhesion and Adhesives,2015,56:73-78.
[13]STAZI F,GIAMPAOLI M,ROSSI M,et al.Environmental ageing on GFRP pultruded joints:Comparison between different adhesives[J].Composite Structures,2015,133:(下转第页)404-414.
[14]WU Wenyan,LIU Qiang,ZONG Zhijian,et al.Experimental investigation into transverse crashworthiness of CFRP adhesively bonded joints in vehicle structure[J].Composite Structures,2013,106(12):581-589.
[15]SHI Y,PINNA C,SOUTIS C.Modelling impact damage in composite laminates:A simulation of intra-and inter-laminar cracking[J].Composite Structures,2014,114(1):10-19.
[16]LONG Shuchang,YAO Xiaohu,ZHANG Xiaoqing.Delamination prediction in composite laminates under lowvelocity impact[J].Composite Structures,2015,132:290-298.
[17]刘让奇.碳纤维复合材料动态压缩力学性能研究[D].长沙:湖南大学,2016.
[18]SHI Y,SWAIT T,SOUTIS C.Modelling damage evolution in composite laminates subjected to low velocity impact[J].Composite Structures,2012,94(9):2902-2913.
[19]ASTM D7136/D7136M-07.Standard test method for measuring the damage resistance of a fibre-reinforced polymer matrix composite to a drop-weight impact event[S].Philadelphia:American Society for Testing and Materials;2007.
[20]MARQUES G P,CAMPILHO R D S G,SILVA F J G D,et al.Adhesive selection for hybrid spot-welded/bonded singlelap joints:experimentation and numerical analysis[J].Composites Part B:Engineering,2016,84:248-257.
[2]梁祖典,燕瑛,张涛涛,等.复合材料单搭接胶接接头试验研究与数值模拟[J].北京航空航天大学学报,2014,40(12):1786-1792.LIANG Zudian,YAN Ying,ZHANG Taotao,et al.Experimental investigation and numerical simulation of composite laminate adhesively bonded single-lap joints[J].Journal of Beijing University of Aeronautics and Astronautics,2014,40(12):1786-1792.
[3]GOLAND M,REISSNER E.The stresses in cemented joints[J].Journal of Applied Mechanics,1944,11(1):A17-A27.
[4]HART-SMITH L J.Adhesive-bonded single-lap joints[M].Hampton,VA:Langley Research Center,1973.
[5]DELALE F,ERDOGAN F,AYDINOGLU M N.Stresses in adhesively bonded joints:a closed-form solution[J].Journal of Composite Materials,1981,15(3):249-271.
[6]DATTAGURU B,EVERETT A R.Geometrically nonlinear analysis of adhesively bonded joints[J].Journal of Engineering Materials&Technology,1984,106(1):59-65.
[7]YANG C,PANG S S.Stress-strain analysis of adhesivebonded single-lap composite joints under cylindrical bending[J].Composites Engineering,1993,3(11):1051-1063.
[8]YANG C,PANG S S.Stress-strain analysis of single-lap composite joints under tension[J].Journal of Engineering Materials and Technology,1996,118(2):247-255.
[9]YANG C,HUANG H,TOMBLIN J S,et al.Elastic-plastic model of adhesive-bonded single-lap composite joints[J].Journal of Composite Materials,2004,38(4):293-309.
[10]陈煊,李玉龙,史飞飞,等.板厚、温度和速度对单搭接胶接接头强度的影响[J].爆炸与冲击,2009,29(5):449-456.CHEN Xuan,LI Yulong,SHI Feifei,et al.Influences of adherent thickness,temperature and velocity on strength of adhesively-bonded single-lap joints[J].Explosion and Shock Waves,2009,29(5):449-456.
[11]郑小玲,娜日松,游敏,等.胶瘤对单搭接胶接接头强度的影响[J].三峡大学学报(自然科学版),2001,23(6):530-532.ZHENG Xiaoling,NA Risong,YOU Min,et al.Influence of fillet on strength of lap joints[J].Journal of China Three Gorges University(Natural Sciences),2001,23(6):530-532.
[12]KADIOGLU F,ADAMS R D.Flexible adhesives for automotive application under impact loading[J].International Journal of Adhesion and Adhesives,2015,56:73-78.
[13]STAZI F,GIAMPAOLI M,ROSSI M,et al.Environmental ageing on GFRP pultruded joints:Comparison between different adhesives[J].Composite Structures,2015,133:(下转第页)404-414.
[14]WU Wenyan,LIU Qiang,ZONG Zhijian,et al.Experimental investigation into transverse crashworthiness of CFRP adhesively bonded joints in vehicle structure[J].Composite Structures,2013,106(12):581-589.
[15]SHI Y,PINNA C,SOUTIS C.Modelling impact damage in composite laminates:A simulation of intra-and inter-laminar cracking[J].Composite Structures,2014,114(1):10-19.
[16]LONG Shuchang,YAO Xiaohu,ZHANG Xiaoqing.Delamination prediction in composite laminates under lowvelocity impact[J].Composite Structures,2015,132:290-298.
[17]刘让奇.碳纤维复合材料动态压缩力学性能研究[D].长沙:湖南大学,2016.
[18]SHI Y,SWAIT T,SOUTIS C.Modelling damage evolution in composite laminates subjected to low velocity impact[J].Composite Structures,2012,94(9):2902-2913.
[19]ASTM D7136/D7136M-07.Standard test method for measuring the damage resistance of a fibre-reinforced polymer matrix composite to a drop-weight impact event[S].Philadelphia:American Society for Testing and Materials;2007.
[20]MARQUES G P,CAMPILHO R D S G,SILVA F J G D,et al.Adhesive selection for hybrid spot-welded/bonded singlelap joints:experimentation and numerical analysis[J].Composites Part B:Engineering,2016,84:248-257.