复合材料泡沫夹芯板局部连接拉脱破坏试验与数值仿真  

Experiment and numerical simulation on foam sandwich plate pull-out local connection failure

作　　者：邹广平[1] 张冰 唱忠良[1] 焦凯 宋小飞 ZOU Guangping;ZHANG Bing;CHANG Zhongliang;JIAO Kai;SONG Xiaofei(College of Aerospace and Civil Engineering,Harbin Engineering University,Harbin 150001,China;Beijing Goldwind Science & Creation Windpower Equipment Co.,Ltd.,Beijing 100176,China)

机构地区：[1]哈尔滨工程大学航天与建筑工程学院,哈尔滨150001 [2]北京金风科创风电设备有限公司,北京100176

出　　处：《复合材料学报》2019年第4期881-891,共11页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(11602068);黑龙江省自然科学基金(JJ2017ZR0248)

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.

关 键 词：复合材料 泡沫夹芯 预埋螺栓连接 拉脱 破坏模式 

分 类 号：TB330.1[一般工业技术—材料科学与工程] O347[理学—固体力学]