热力载荷作用下复合材料板-铝合金板接头钉载分配与钉孔周边应力分布
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摘要
采用试验和有限元方法研究复合材料板-铝合金板单搭接接头在热和力载荷共同作用下的钉载分配和钉孔周边应力分布。将仿真模型得到的钉载分配结果与试验结果进行对比发现:温度升高后,靠近加载端承载最大的螺栓载荷分配比例增大,相应位置钉孔周边应力水平也有较大幅度的增加。对比未考虑热残余应力模型发现:考虑热残余应力模型与试验结果最相近;同样温度时热残余应力的存在使应力水平提高10%左右,说明在热载荷作用下考虑热残余应力的必要性。复合材料与金属接头钉孔周边应力分布呈"枫叶"状。
The bolt load distribution and stress distribution around bolt-hole of composite laminatesallminum alloy plate joint under thermal and mechanical loadings are studied using test and finite element method. The comparison result between the numerical model and test shows that the load distribution ratio of the bolt near the loading end is increased when the temperature is raised,and the stress around the corresponding bolt-hole is increased. Compared to the stress model of non-considering heat residual,it is found that the model considering thermal residual stress is the closest to the test,and the stress level is increased by about 10% at the same temperature because of the existence of thermal residual stress. The thermal residual stress should be taken into account under the action of thermal load. The stress distribution around the bolt-hole of composite material and metal joint is "maple leaf"shape.
The bolt load distribution and stress distribution around bolt-hole of composite laminatesallminum alloy plate joint under thermal and mechanical loadings are studied using test and finite element method. The comparison result between the numerical model and test shows that the load distribution ratio of the bolt near the loading end is increased when the temperature is raised,and the stress around the corresponding bolt-hole is increased. Compared to the stress model of non-considering heat residual,it is found that the model considering thermal residual stress is the closest to the test,and the stress level is increased by about 10% at the same temperature because of the existence of thermal residual stress. The thermal residual stress should be taken into account under the action of thermal load. The stress distribution around the bolt-hole of composite material and metal joint is "maple leaf"shape.
引文
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[8]刘兴科,李亚智,刘向东,等.金属和复合材料多钉连接钉载分配研究[J].航空工程进展,2011,2(2):193-198.DOI:10.3969/j.issn.1674-8190.2011.02.011.
[9]张震,吕国志,文潘涛,等.多钉连接复合材料板钉传载荷的估算[J].科学技术与工程,2007,7(10):2197-2200.DOI:10.3969/j.issn.1671-1815.2007.10.003.
[10]MATTHEWS F L,WONG C M,CHRYSSAFITIS S.Stress distribution around a single bolt in fibre-reinforced plastic[J].Composites,1982,13(3):316-322.DOI:10.1016/0010-4361(82)90016-7.
[11]WALKER S P.Thermal effects on pin-bearing behavior of IM7/PETI5 composite joints[J].Journal of Composite Materials,2002,36(23):2623-2651.DOI:10.1177/002199802761675557.
[12]GOSWAMI S.A finite element investigation on progressive failure analysis of composite bolted joints under thermal environment[J].Journal of Reinforced Plastics and Composites,2005,24(2):161-171.DOI:10.1177/0731684405042958.
[13]KIM J,YOON J C,KANG B S.Finite element analysis and modeling of structure with bolted joints[J].Applied Mathematical Modelling,2007,31(5):895-911.DOI:10.1016/j.apm.2006.03.020.
[14]IREMAN T.Three-dimensional stress analysis of bolted single-lap composite joints[J].Composite Structures,1998,43(3):195-216.DOI:10.1016/S0263-8223(98)00103-2.
[15]SCHN J.Coefficient of friction for aluminum in contact with a carbon fiber epoxy composite[J].Tribology International,2004,3157(5):395-404.DOI:10.1016/j.triboint.2003.11.008.
[2]WALKER S P.Thermal effects on compressive behavior of IM7/PETI5 laminates[J].Journal of Composite Materials,2003,38(2):149-162.DOI:10.1177/0021998304038648.
[3]ERIKSSON I,BCKLUND J,MLLER P.Design of multiple-row bolted composite joints under general in-plane loading[J].Composites Engineering,1995,5(8):1051-1068.DOI:10.1016/0961-9526(95)00044-N.
[4]KRADINOV V,BARUT A,MADENCI E,et al.Bolted double-lap composite joints under mechanical and thermal loading[J].International Journal of Solids and Structures,2001,38(44-45):7801-7837.DOI:10.1016/S0020-7683(01)00128-7.
[5]GILL R,KUMAR V,CHOUDHARY A.Failure analysis of bolted composite joint-a review[J].Nonlinear Dynamics,2014,11(10):482-488.DOI:10.14445/22315381/IJETT-V11P294.
[6]迟坚,谢鸣九.复合材料多排钉机械连接有限元分析方法研究[J].航空学报,1998,19(4):499-502.DOI:10.3321/j.issn:1000-6893.1998.04.024.
[7]史红星,王斌团.复合材料层合板与金属板螺栓连接载荷分配研究[C]//第17届全国复合材料学术会议(复合材料力学分论坛)论文集.北京:2012.
[8]刘兴科,李亚智,刘向东,等.金属和复合材料多钉连接钉载分配研究[J].航空工程进展,2011,2(2):193-198.DOI:10.3969/j.issn.1674-8190.2011.02.011.
[9]张震,吕国志,文潘涛,等.多钉连接复合材料板钉传载荷的估算[J].科学技术与工程,2007,7(10):2197-2200.DOI:10.3969/j.issn.1671-1815.2007.10.003.
[10]MATTHEWS F L,WONG C M,CHRYSSAFITIS S.Stress distribution around a single bolt in fibre-reinforced plastic[J].Composites,1982,13(3):316-322.DOI:10.1016/0010-4361(82)90016-7.
[11]WALKER S P.Thermal effects on pin-bearing behavior of IM7/PETI5 composite joints[J].Journal of Composite Materials,2002,36(23):2623-2651.DOI:10.1177/002199802761675557.
[12]GOSWAMI S.A finite element investigation on progressive failure analysis of composite bolted joints under thermal environment[J].Journal of Reinforced Plastics and Composites,2005,24(2):161-171.DOI:10.1177/0731684405042958.
[13]KIM J,YOON J C,KANG B S.Finite element analysis and modeling of structure with bolted joints[J].Applied Mathematical Modelling,2007,31(5):895-911.DOI:10.1016/j.apm.2006.03.020.
[14]IREMAN T.Three-dimensional stress analysis of bolted single-lap composite joints[J].Composite Structures,1998,43(3):195-216.DOI:10.1016/S0263-8223(98)00103-2.
[15]SCHN J.Coefficient of friction for aluminum in contact with a carbon fiber epoxy composite[J].Tribology International,2004,3157(5):395-404.DOI:10.1016/j.triboint.2003.11.008.