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Combined Adaptive Finite Element Method and J-Domain Integral Technique for Crack Problems

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Abstract:

An adaptive finite element method for analyzing two-dimensional and axisymmetric nonlinear elastic fracture mechanics problems with cracks is presented. The J-integral is used as a parameter to characterize the severity of stresses and deformation near a crack tip. The domain integral technique is utilized as the J-integral solution scheme with the 9-node degenerated crack tip elements. The solution accuracy is further improved by incorporating an error estimation procedure to a remeshing algorithm with a solution mapping scheme to resume the analysis at a particular load level after the adaptive remeshing technique has been applied. Two benchmark problems are analyzed to evaluate the efficiency of the combined procedure.

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Periodical:

Key Engineering Materials (Volumes 340-341)

Pages:

459-464

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.340-341.459

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Online since:

June 2007

Authors:

Kobsak Potjananapasiri, Sutthisak Phongthanapanich, Paritud Bhandhubanyong, Pramote Dechaumphai

Keywords:

Adaptive Mesh, Domain Integral Technique, Ĵ-Integral, Solution Mapping

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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