力学与实践 ›› 2019, Vol. 41 ›› Issue (4): 429-435.DOI: 10.6052/1000-0879-19-114

• 应用研究 • 上一篇    下一篇

等截面金属弯钩极限承载力计算

朱天赐1), 黎立云2), 王宏伟 , 卫梦希   

  1. 中国矿业大学(北京)力学与建筑工程学院,北京 100083
  • 发布日期:2019-08-26
  • 作者简介:1) 朱天赐, 本科生。 E-mail: jsycztchhh@163.com;
    2) 黎立云, 教授, 主要从事断裂与强度力学研究。 E-mail: lly@cumtb.edu.cn

ULTIMATE STRENGTH OF MENTAL HOOK OF UNIFORM CROSS SECTION

ZHU Tianc1), LI Liyun2), WANG Hongwei, WEI Mengxi   

  1. School of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 100083, China
  • Published:2019-08-26

摘要: 研究等截面弯钩受力时的应力分布及承载极限问题,本文以弹性力学的曲梁问题为参考,建立了平面应力条件下的金属弯钩的力学模型,得出了弯钩应力分布解,并通过ANSYS数值模拟进行验证,得出其危险截面。基于极限变形原理、弹性极限设计原理与塑性极限设计原理,提出了等截面弯钩失效的三种准则,为工厂生产不同极限载荷下的弯钩提供了理论依据。

关键词: 等截面弯钩, 极限状态, 失效准则

Abstract: In order to study the stress distribution and the ultimate strength of the hook of uniform cross section subjected to load, a stress distribution model of the hook is established as a curved beam. The numerical method of ANSYS is used to test the theoretical solution of the hook, which also helps to identify the dangerous section. Three failure principles are established based on the displacement, the limit of elasticity and the principle of plastic design, providing a theoretical basis for the factory to produce hooks of different sizes under different ultimate loads.

Key words: hook of uniform cross section, ultimate condition, failure principle

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