JSME International Journal Series A Solid Mechanics and Material Engineering
Online ISSN : 1347-5363
Print ISSN : 1344-7912
ISSN-L : 1344-7912
Fatigue & Fracture
Shape Optimization for Prolonging Fatigue Life
Seog-Young HANJang-Keun LIM
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2002 Volume 45 Issue 2 Pages 298-304

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Abstract

Shape optimization for two types of specimens in opening mode and a cantilevered beam in mixed mode was accomplished by the linear elastic fracture mechanics and the growth-strain method. Linear elastic fracture mechanics was used to evaluate the stress intensity factors and fatigue lives. And the growth-strain method was used to optimize a shape. From the results, it was found that the optimized shapes of two types of specimens and a cantilevered beam greatly prolong their fatigue lives, and the growth-strain method is an appropriate technique for shape optimization of a structure having a crack.

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© 2002 by The Japan Society of Mechanical Engineers
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