A general approach for calculations of weight functions and stress intensity factors-Reference-Cited by-同舟云学术

A general approach for calculations of weight functions and stress intensity factors

Published:2016-08-08 Issue:16 Volume:230 Page:2806-2816
ISSN:0954-4062
Container-title:Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
language:en
Short-container-title:Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science

Author:

Fan Junling¹,Guo Qiang²,Gao Guohui³,Chen Li¹,Chang Wenkui¹,Dong Dengke¹,Guo Xinglin²

Affiliation:

1. AVIC Aircraft Strength Research Institute, Xi’an, China

2. State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, China

3. Xingtai University, Xingtai, China

Abstract

An approximate and simple expression is presented to calculate the crack face displacements of collinear cracks and center cracks by use of only one reference stress intensity factor. The crack face displacement and its partial derivative determined by the present method are in good agreement with their exact solutions. Calculations of weight functions for the center crack are reduced to the simple quadrature of the correction function and of the partial derivative of the crack face displacement. Based on the weight function method, the relationships between the stress intensity factor of the rotating blade with a center crack to the crack length, crack location, rotating speed and angular acceleration are studied. The critical rotating speed of the blade is evaluated based on the fracture law.

Publisher

SAGE Publications

Subject

Mechanical Engineering

Link

http://journals.sagepub.com/doi/pdf/10.1177/0954406215602034

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