• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Reinforced Plastics and Composites >Effects of Transverse Stitching and Hygrothermal Environment on Composite Wing T-Joints
【24h】

Effects of Transverse Stitching and Hygrothermal Environment on Composite Wing T-Joints

机译：横向缝合和湿热环境对复合材料机翼T型接头的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The present paper deals with the effects of transverse stitching and hygrothermal environment at the web-skin interface of composite wing T-joints that are made of carbon fibre composite (CFC) materials.The T300 carbon fibres are considered for the transverse stitching.The statistical bundle strength based on the Weibull distribution function is used for the estimation of the joint strength.A thick composite shell finite element is specially developed taking into account the hygrothermal effects and is used for a detailed finite element analysis of composite T-joints.T-joints may be exposed to moisture and temperature during their service life.Under such circumstances moisture and temperature diffuse into T-joints.As a consequence,the stiffness and strength properties of the laminates are degraded.Moreover,since the lamines in the laminate cannot deform freely,residual stresses are introduced.All the normal and shear stresses are computed and the failure loads are also computed using various failure criteria to get better insight into the behaviour of laminated T-joints.Additional stresses due to hyghrothermal forces are also computed.The T-joint is supported along the length and a pull-out force is applied on the top of the web.It is found that the web-skin interface where load transfer is out of plane,is the critical zone for failure due to high transverse normal and shear stresses.Also,higher temperature and moisture levels introduce additional transverse normal and shear stresses that make the zone more critical.The present study also shows how the transverse stitching at the web-skin interface zone adds to the transverse strengthening of the interface laminates and helps the T-joints to sustain higher loads.
机译：本文研究了碳纤维复合材料（CFC）制成的复合翼T型接头的幅面-皮肤界面处的横向缝合和湿热环境的影响，并考虑将T300碳纤维用于横向缝合。基于威布尔分布函数的束强度用于估算接头强度。考虑到湿热效应，专门开发了厚的复合壳有限元，并用于复合T型接头的详细有限元分析。接头在使用寿命期间可能会暴露在湿气和温度下。在这种情况下，湿气和温度会扩散到T型接头中。结果，层压板的刚度和强度特性会降低。此外，由于层压板中的拉明胺不会变形自由地引入残余应力。计算所有的正应力和剪应力，并使用v计算破坏载荷。各种失效准则，以更好地了解层压T形接头的行为。还计算了由于水热力引起的附加应力。沿着长度方向支撑T形接头，并在腹板顶部施加拉力。结果发现，由于横向高法向和剪切应力的作用，载荷传递不在平面内的腹板-皮肤界面是破坏的关键区域。此外，较高的温度和湿度会引入额外的横向法向和剪切应力，从而导致该区域本研究还显示了腹板-皮肤界面区域的横向缝合如何增加界面层压板的横向强度，并有助于T型接头承受更高的载荷。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号