Life Prediction for Complex Structures-Reference-Cited by-同舟云学术

Life Prediction for Complex Structures

Published:2005-09-20 Issue:4 Volume:127 Page:814-819
ISSN:0742-4795
Container-title:Journal of Engineering for Gas Turbines and Power
language:en
Short-container-title:

Author:

Forth S. C.¹,Annigeri B. S.²,Keat W. D.³

Affiliation:

1. United Technologies Research Center, NASA Langley Research Center, MS 188E, Two West Reid Street, Hampton, VA 23682

2. United Technologies Research Center, MS 129-73, 411 Silver Lane, East Hartford, CT 06108

3. Mechanical Engineering Department, Union College, Steinmetz Hall, Schenectady, NY 12308

Abstract

The surface integral method, an indirect boundary element method that represents a crack as a distribution of force dipoles, has been developed to model three-dimensional nonplanar crack growth in complex structures. The finite body was effectively modeled by superposition of stress influence functions for a half-space. As a result of this strategy, only the fracture has to be discretized. Crack propagation was modeled using the maximum circumferential stress theory to predict crack direction and the Forman fatigue equation, modified with an equivalent stress intensity solution for mixed-mode, to predict extension. Comparisons with benchmark solutions and field data verified the computational methodology and defined the limits of its applicability.

Publisher

ASME International

Subject

Mechanical Engineering,Energy Engineering and Power Technology,Aerospace Engineering,Fuel Technology,Nuclear Energy and Engineering

Link

http://asmedigitalcollection.asme.org/gasturbinespower/article-pdf/127/4/814/5703922/814_1.pdf

Reference23 articles.

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