scholarly journals The Finite Element Analysis of Stress Intensity Factors Using the Modified Principle of Virtual Work

1976 ◽  
Vol 42 (362) ◽  
pp. 3086-3093 ◽  
Author(s):  
Toshihisa NISHIOKA ◽  
Genki YAGAWA ◽  
Nobukazu OHKURA ◽  
Yoshio ANDO
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Intensity ◽  
Stress Intensity Factors ◽  
Virtual Work ◽  
Principle Of Virtual Work ◽  
Intensity Factors ◽  
Element Analysis ◽  
The Finite Element Analysis

Finite element analysis of cracked bodies to determine stress intensity factors

1976 ◽  
Vol 11 (1) ◽  
pp. 18-25 ◽  
Author(s):  
C L Chow ◽  
K J Lau
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Intensity ◽  
Stress Intensity Factors ◽  
Crack Tip ◽  
Stress Conditions ◽  
Intensity Factors ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Crack Tip Stress

A method for the computation of the stress intensity and associated geometrical correction factors by use of the finite element analysis is presented. The lack of ability to represent crack tip stress conditions has been the shortcoming of the conventinal techniques in finite-element solutions of problems of cracked bodies. The proposed method provides the representation of crack tip stress conditions with elliptic displacement functions which lead to the direct computation of stress intensity factors. The method is applied to several crack configurations with relatively coarse finite-element networks and the accuracy is found to be satisfactory when compared with results of previous workers.

Stress Intensity Factors for a Cracked Stiffened Sheet With Cracked Stiffeners

1991 ◽  
Vol 113 (1) ◽  
pp. 119-124 ◽  
Author(s):  
T. Nishimura
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Intensity ◽  
Elasticity Theory ◽  
Stress Intensity Factors ◽  
Basic Solution ◽  
Intensity Factors ◽  
Element Analysis

The stress intensity factors are calculated for a cracked sheet and cracked stiffeners attached with rivets. The approach adopted is based on compatibility of displacements among the sheet, fasteners, and stiffeners. Displacements in the cracked stiffener are determined by adding the induced displacements from cracks to intact stiffener displacements, which are obtained using empirical stress intensity equations. In addition, displacements in the cracked sheet are calculated using the basic solution of a single stiffener for analyzing any combinations of stiffener (either intact, broken, or cracked). Bending flexibilities of the sheet and stiffeners are ignored, and the analysis is conducted within the limitations of elasticity theory. The proposed method is verified by comparing it to numerically computed results from finite element analysis.

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