Crack Analysis, Using a New Coupled FE-EFG Method

JAST. Vol. 9, No. 1, pp 59-73

© Iranian Aerospace Society, Winter - Spring 2012

J

Journal of Aerospace Science and Technology

A S T

Crack Analysis, Using a New Coupled FE-EFG Method

S. Mohamadnejad

1

_{, A. Darvizeh}

2

_{, M. Darvizeh}

2

_{, R. Ansari}

3

_{, and A. Basti}

4

To solve crack problems, some coupled methods have been developed in recent years. Most of these methods have some shortcomings such as the need for a are widely used for this class of problems. In order to take the advantages of these methods while avoiding the disadvantages, it is essential to follow solution ap-proaches based on a combination of them. Prompted by this idea, in this article, ! method. In this procedure, the usage of transition region is bypassed by " # $ is put to use in the areas far from the crack tip. Static analysis of two-dimensional crack problems, according to the plane stress condition under mode-I loading, has been done. The results from the present method are indicated to be in excel-lent agreement with those from the existing analytical solutions.

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1 Introduction

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7 Result and Discussion

6? Crack Analysis, Using a New Coupled FE-EFG Method

(a)

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Energy error norm changes with crack length change

Energy error norm changes with crack length change

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6C S. Mohamadnejad, A. Darvizeh, M. Darvizeh, R. Ansari, and A. Basti

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6Y Crack Analysis, Using a New Coupled FE-EFG Method

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?E S. Mohamadnejad, A. Darvizeh, M. Darvizeh, R. Ansari, and A. Basti

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Two field deformed EFG deformed

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? Crack Analysis, Using a New Coupled FE-EFG Method

8 Concluding Remarks

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9 References

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