复合材料泡沫夹芯板局部连接拉脱破坏试验与数值仿真
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摘要
对复合材料泡沫夹芯板局部连接拉脱破坏进行了试验研究,分析了接头的破坏模式、失效载荷和面板对接头的影响。采用ABAQUS有限元软件进行了数值分析,通过与实验结果对比验证其模型的可靠性,预测分析内部的破坏模式以及结构参数对接头破坏的影响,研究了泡沫芯体内部的渐进破坏以及面板和泡沫芯体之间的胶层脱粘破坏。结果表明:泡沫夹芯板预埋螺栓连接结构灌封胶边缘的泡沫先产生裂纹后向中间扩展,中间区域全部开裂时两端裂纹沿着45°方向向上扩展。胶层开裂的区域呈弧形条状,分布在螺栓紧固件的两侧,在面板宽度方向,开裂的区域贯穿两侧。随着预埋件深度的增加最大破坏载荷也在增加,随着预埋件直径的增加亚临界破坏载荷和最大破坏载荷没有比较明显的变化,但最大破坏位移在减小。
Local connection pull-out failure of composite foam sandwich plate were experimentally studied,the failure mode failure load and the influence of panel on joint were analyzed.Numerical analysis was carried out by using ABAQUS finite element software.Simulation results verified the reliability of the model by comparing with the experimental results,The failure mode and internal structure parameters influence on joint destruction were prognosticated and analyzed.The progressive failure in the foam core and the debonding of the adhesive layer between the panel and the foam core were studied.The results show that the crack is generated on the edge foam of foam sandwich plate pre-buried bolt connection structure sealant,and extends to the middle part.When the middle region is all cracked,the cracks at the two ends extend upward along the direction of 45°.The cracking area of the adhesive layer is curved in a shape of curved strip,distributes on both sides of the bolt fastener,and in the width direction of the panel,the cracked area runs through both sides.When maximum depth of embedded parts increases,failure load is also increased.Subcritical failure load and maximum failure load do not change obviously when diameters of embedded parts increase,but the biggest failure displacement reduces.
Local connection pull-out failure of composite foam sandwich plate were experimentally studied,the failure mode failure load and the influence of panel on joint were analyzed.Numerical analysis was carried out by using ABAQUS finite element software.Simulation results verified the reliability of the model by comparing with the experimental results,The failure mode and internal structure parameters influence on joint destruction were prognosticated and analyzed.The progressive failure in the foam core and the debonding of the adhesive layer between the panel and the foam core were studied.The results show that the crack is generated on the edge foam of foam sandwich plate pre-buried bolt connection structure sealant,and extends to the middle part.When the middle region is all cracked,the cracks at the two ends extend upward along the direction of 45°.The cracking area of the adhesive layer is curved in a shape of curved strip,distributes on both sides of the bolt fastener,and in the width direction of the panel,the cracked area runs through both sides.When maximum depth of embedded parts increases,failure load is also increased.Subcritical failure load and maximum failure load do not change obviously when diameters of embedded parts increase,but the biggest failure displacement reduces.
引文
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[17]GRENESTEDT J L.Development of a new peel-stopper for sandwich structures[J].Composites Science and Technology,2001,61(11):1555-1559.
[18]TOFTEGAARD H,LYSTRUP A.Design and test of lightweight sandwich T-joint for naval ships[J].Composites Part A:Applied Science and Manufacturing,2005,36(8):1055-1065.
[19]吴晔,章宝华,谢帮华,等.聚氨酯泡沫夹心板预埋螺栓拉脱试验研究[J].南昌工程学院学报,2017,36(3):95-97.WU Ye,ZHANG Baohua,XIE Banghua,et al.Pull-off experimental study of polyurethane foam sandwich panels on embedded bolt joint[J].Journal of Nanchang Institute of Technology,2017,36(3):95-97(in Chinese).
[20]宋小飞.复合材料泡沫夹芯板预埋螺栓连接拉脱破坏的研究[D].哈尔滨:哈尔滨工程大学,2014.SONG Xiaofei.Investigation on pull-off failure behaviour of composite foam sandwich panels on embedded bolt joint[D].Harbin:Harbin Engineering University,2014(in Chinese).
[21]Standard test method for measuring the fastener pull-through resistance of a fiber-reinforced polymer matrix composite:ASTM D7332/D7332M—16[S].ASTM International:West Conshohocken,PA,2016.
[2]赵丽滨,彭雷,张建宇,等.复合材料π接头拉伸力学性能的试验和计算研究[J].复合材料学报,2009,26(1):97-103.ZHAO Libin,PENG Lei,ZHANG Jianyu,et al.Experimental and numerical research on mechanics performance of compositeπjoint under tensile loading[J].Acta Materiae Compositae Sinica,2009,26(1):97-103(in Chinese).
[3]周祝林,沈利新,翁雷.玻璃钢蜂窝夹层结构接头试验分析及优化设计[J].玻璃钢/复合材料,2002,4(3):3-5.ZHOU Zhulin,SHEN Lixin,WENG Lei.Optimal design and test analysis of joints of GFRP sandwich structures[J].Fiber Reinforced Plastics/Composites,2002,4(3):3-5(in Chinese).
[4]白江波,熊峻江,程序,等.RTM成型复合材料T型接头工艺参数优化与力学性能实验研究[J].复合材料学报,2009,26(3):13-14.BAI Jiangbo,XIONG Junjiang,CHENG Xu,et al.Processing parameter optimization and experimental investigation on mechanical properties for RTM composite T-joint[J].Acta Materiae Compositae Sinica,2009,26(3):13-14(in Chinese).
[5]韩丽婷,刘伟庆.复合材料夹层结构平接胶结节点抗弯性能试验研究[J].工程力学,2012,29(007):214-220.HAN Liting,LIU Weiqing.Experimental studies on flexural permormance of adherencr flush joints for composite sandwich structures[J].Engineering Mechanics,2012,29(007):214-220(in Chinese).
[6]黄承恭.复合材料夹层板嵌入件设计应注意的新问题[J].直升机技术,1994,97(1):12-18.HUANG Chenggong.The cantions new problem of composite sandwich plate insert design[J].Helicopter Technology,1994,97(1):12-18(in Chinese).
[7]王杰,余音,汪海,等.泡沫夹层T型接头失效分析与局部几何参数设计[J].南京航空航天大学学报,2010,42(003):374-378.WANG Jie,YU Yin,WANG Yang,et al.Failure analysis and local geometric parameter design for foam core sandwich T-joints[J].Journal of Nanjing University of Aeronautics &Astronautics,2010,42(003):374-378(in Chinese).
[8]DANIELSSON M,GRENESTEDT J L.Gradient foam core materials for sandwich structures:preparation and characterisation[J].Composites Part A:Applied Science and Manufacturing,1998,29(8):981-988.
[9]EARL J S,DULIEU-BARTON J M,SHENOI R A.Determination of hygrothermal ageing effects in sandwich construction joints using thermoelastic stress analysis[J].Composites Science and Technology,2003,63(2):211-223.
[10]KHALILI S M R,GHAZNAVI A.Numerical analysis of adhesively bonded T-joints with structural sandwiches and study of design parameters[J].International Journal of Adhesion and Adhesives,2011,31(5):347-356.
[11]NGUYEN K H,PARK Y B,KWEON J H,et al.Failure behaviour of foam-based sandwich joints under pull-out testing[J].Composite Structures,2012,94(2):617-624.
[12]HEIMBS S,PEIN M.Failure behaviour of honeycomb sandwich corner joints and inserts[J].Composite Structures,2009,89(4):575-588.
[13]LIM J W,LEE D G.Development of the hybrid insert for composite sandwich satellite structures[J].Composites Part A:Applied Science and Manufacturing,2011,42(8):1040-1048.
[14]GUO S,MORISHIMA R.Numerical analysis and experiment of composite sandwich T-joints subjected to pulling load[J].Composite Structures,2011,94(1):229-238.
[15]ZHOU D W,LOUCA L A,SAUNDERS M.Numerical simulation of sandwich T-joints under dynamic loading[J].Composites Part B:Engineering,2008,39(6):973-985.
[16]BOZHEVOLNAYA E,LYCKEGAARD A,THOMSEN O T.Novel design of foam core junctions in sandwich panels[J].Composites Part B:Engineering,2008,39(1):185-190.
[17]GRENESTEDT J L.Development of a new peel-stopper for sandwich structures[J].Composites Science and Technology,2001,61(11):1555-1559.
[18]TOFTEGAARD H,LYSTRUP A.Design and test of lightweight sandwich T-joint for naval ships[J].Composites Part A:Applied Science and Manufacturing,2005,36(8):1055-1065.
[19]吴晔,章宝华,谢帮华,等.聚氨酯泡沫夹心板预埋螺栓拉脱试验研究[J].南昌工程学院学报,2017,36(3):95-97.WU Ye,ZHANG Baohua,XIE Banghua,et al.Pull-off experimental study of polyurethane foam sandwich panels on embedded bolt joint[J].Journal of Nanchang Institute of Technology,2017,36(3):95-97(in Chinese).
[20]宋小飞.复合材料泡沫夹芯板预埋螺栓连接拉脱破坏的研究[D].哈尔滨:哈尔滨工程大学,2014.SONG Xiaofei.Investigation on pull-off failure behaviour of composite foam sandwich panels on embedded bolt joint[D].Harbin:Harbin Engineering University,2014(in Chinese).
[21]Standard test method for measuring the fastener pull-through resistance of a fiber-reinforced polymer matrix composite:ASTM D7332/D7332M—16[S].ASTM International:West Conshohocken,PA,2016.