| 复合材料层合板单搭接机械连接横向力研究 |
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| 引用本文： | 张志宏,张博平,杨杰.复合材料层合板单搭接机械连接横向力研究[J].航空工程进展,2018,9(1):84-90. |
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| 作者姓名： | 张志宏 张博平 杨杰 |
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| 作者单位： | 西北工业大学,西北工业大学,中航工业第一飞机设计研究院 |
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| 摘 要： | 在复合材料单搭接连接结构中,由于载荷的偏心作用,在搭接处产生沿板厚度方向的横向力,使得接头产生横向位移并使螺栓偏转。采用试验及有限元方法对复合材料双钉单搭接机械连接中螺栓、螺母在静载荷作用下的应力进行研究,并进行结果分析。结果表明:单搭接中偏心矩在螺栓上的螺纹位置产生较大的应力,使螺栓发生断裂破坏;在螺母中产生较大的弯曲应力,使螺母发生破坏;在连接区两端对层合板施加横向约束能够有效降低螺栓、螺母中的应力幅值;计算结果与试验破坏模式吻合。
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| 关 键 词： | 复合材料 单搭接 螺栓 侧向力 应力集中 |
| 收稿时间： | 2017/8/15 0:00:00 |
| 修稿时间： | 2017/12/12 0:00:00 |
Study on the lateral force of the single lap joint of thick composite laminates |
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| zhangzhihong,zhangboping and yangjie.Study on the lateral force of the single lap joint of thick composite laminates[J].Advances in Aeronautical Science and Engineering,2018,9(1):84-90. |
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| Authors: | zhangzhihong zhangboping and yangjie |
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| Institution: | School of Aeronautics,Northwestern Polytechnical University,School of Aeronautics,Northwestern Polytechnical University,Avic The First Aircraft Institute |
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| Abstract: | In the composite material single lap joint structure, due to the eccentricity of the load, the lateral force is generated in the lap joint, which causes the lateral displacement of the joint and deflects the bolt.The stress distribution of bolt and nut under static load is analyzed in this paper. Results show that eccentric moment in the single lap produces a strong stress in the thread position of the bolt, resulting in the fracture failure of the bolt. And a strong circumferential stress raiseing in the nut, causing the nut to break.The lateral constraints on the laminated plates can effectively reduce the stress amplitude in the bolts and nuts.The calculated results agree with the test failure mode. |
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| Keywords: | composite laminates single lap bolt lateral force stress concentration |
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