Methods of determining the margin of cyclic crack resistance of metal structures for hoisting machinery

International Conference on Mechanical Engineering, Automation and Control Systems 2016

机械制造;无线电电子学;计算机科学

Antsev, V.Yu.^1 ; Tolokonnikov, A.S.^1 ; Vorobev, A.V.^1 ; Sakalo, V.I.^2

Tula State University, Lenina ave., 92, Tula

300012, Russia^1

Bryansk State Technical University, 7, 50-letiya Octyabrya bul., Bryansk

241035, Russia^2

关键词: Crack resistance;    Crack-like defects;    Element models;    Hoisting machinery;    Metal structures;    Routine inspection;    Safe operation;    Stress intensity;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/177/1/012096/pdf
DOI  :  10.1088/1757-899X/177/1/012096

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

In the course of manufacturing and operation, there can appear cracks in load-carrying metal structures which are hard to be detected till a definite moment. That is why in the course of designing metal structures, it is necessary to ensure their durability during possible existence of cracks up to the next routine inspection of a structure. For the prognostication of the durability of a structure with a crack, a research of coefficients of stress intensity on end-element models with crack-like defects of different length is carried out. As a result of this, a procedure for the definition of crack-resistance resource allowing the supposition of safe operation of a metal structure with a crack within the limits of recurrent routine works is developed.