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An experimental study on the effect of bolt-hole clearance and bolt torque on single-lap, countersunk composite joints

机译：螺栓孔间隙和螺栓扭矩对单圈埋头复合节点影响的实验研究

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摘要

An experimental study on the effect of bolt-hole clearance and bolt torque on single-lap, single-bolt, countersunk composite joints are presented. The specimens were manufactured from carbon fiber/epoxy unitapes with quasi-isotropic lay-ups. Bearing stress/bearing strain behavior, bearing strength and joint stiffness were obtained according to ASTM standard D5961. The interaction between bolt-hole clearance and bolt torque on bearing response was evaluated by varying multiple parameters. One focus was to evaluate the surface strain distribution and the out-of-plane deformation of the joints by using a commercial 3D Digital Image Correlation (DIC) system. It is found that there is interaction between bolt-hole clearance and bolt torque on joint stiffness loss and 2% offset bearing strength. Furthermore, bolt-hole clearance intensifies the surface strain concentration and the out-of-plane deformation of the joints. Bolt torque alleviates the surface strain concentration, but has little effect on the out-of-plane deformation. (C) 2015 Elsevier Ltd. All rights reserved.
机译：提出了螺栓孔间隙和螺栓扭矩对单圈，单螺栓，埋头复合接头影响的实验研究。标本由具有准各向同性叠层的碳纤维/环氧单质纤维制成。根据ASTM标准D5961获得轴承应力/轴承应变行为，轴承强度和接头刚度。通过改变多个参数来评估螺栓孔间隙与螺栓扭矩对轴承响应之间的相互作用。一个重点是通过使用商业3D数字图像关联（DIC）系统来评估接头的表面应变分布和面外变形。结果发现，螺栓孔间隙与螺栓扭矩之间在关节刚度损失和2％偏置轴承强度之间存在相互作用。此外，螺栓孔间隙会增加表面应变集中和接头的平面外变形。螺栓扭矩减轻了表面应变集中，但对面外变形影响很小。 （C）2015 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Composite Structures》 |2015年第9期|411-419|共9页
  • 作者

    Zhai Yunong; Li Dongsheng; Li Xiaoqiang; Wang Liang; Yin Yu;

  • 作者单位

    Beihang Univ, Res Lab Precis Forming & Assembly Lightweight Str, Sch Mech Engn & Automat, Beijing 100191, Peoples R China;

    Beihang Univ, Res Lab Precis Forming & Assembly Lightweight Str, Sch Mech Engn & Automat, Beijing 100191, Peoples R China;

    Beihang Univ, Res Lab Precis Forming & Assembly Lightweight Str, Sch Mech Engn & Automat, Beijing 100191, Peoples R China;

    Beihang Univ, Res Lab Precis Forming & Assembly Lightweight Str, Sch Mech Engn & Automat, Beijing 100191, Peoples R China;

    Beihang Univ, Res Lab Precis Forming & Assembly Lightweight Str, Sch Mech Engn & Automat, Beijing 100191, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Countersunk composite joints; Single-lap; Bolt-hole clearance; Bolt torque; Bearing tests; 3D Digital Image Correlation;

    机译：埋头复合接头;单圈;螺栓孔间隙;螺栓扭矩;轴承测试;3D数字图像关联;

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