应急断离剪切销的双剪切破坏过程仿真研究
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:


Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    民用飞机吊挂应急断离剪切销需要在紧急情况下断开并使得吊挂或者发动机脱离机翼,避免飞机在紧急着陆时,吊挂结构因受到地面反弹而损坏机翼油箱,导致油箱漏油起火引发火灾。因此应急断离剪切销对于飞机紧急着陆状态下,飞机安全着陆起到了非常重要的作用。本文以不锈钢材料的应急断离剪切销为研究对象,通过试验方法对不锈钢材料的试件进行力学性能测试,根据测试结果建立了应急断离剪切销的弹塑性本构模型,依据本构模型开展了2种不同径厚比下的应急断离剪切销双剪仿真分析。分析结果表明,在双剪工况下,随着施加在剪切销上的载荷增加,应急断离剪切销上剪切应力在两侧不断增加;剪切销的内径越大,其破坏瞬间的剪切强度越大,且破坏位移越大。

    Abstract:

    The emergency breakaway shear pin needs to be disconnected in case of emergency and make the hanging or engine separate from the wing, in order to prevent the hanging structure from damaging the wing oil tank due to the rebound of the ground during the emergency landing. In this paper, stainless steel material shear pin is taken as the research object, and the mechanical properties of the material are tested by the test method. According to the test results, the elastic-plastic constitutive model of the shear pin is established, and the double shear simulation analysis of the breakaway pin under two different diameter thickness ratios is carried out according to the constitutive model. The results show that under the double shear condition, with the increase of applied load, the shear stress on both sides of the pin increases continuously; the larger the inner diameter is, the greater the shear strength at the moment of failure is, the greater the failure displacement is.

    参考文献
    相似文献
    引证文献
引用本文

谈志晶,林森.应急断离剪切销的双剪切破坏过程仿真研究[J].民用飞机设计与研 究,2021(1):64-68TAN Zhijing, LIN Sen.[J]. Civil Aircraft Design and Research,2021,(1):64-68. ( in Chinese)

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2021-04-07
  • 出版日期:

微信公众号二维码

手机版网站二维码

我要投稿 投稿指南 联系我们 二维码
TOP
×
《民用飞机设计与研究》
重要通知!