Modified crack closure integral technique for extraction of SIFs in meshfree methods

Authors:
N. Muthu;B. G. Falzon;S. K. Maiti;S. Khoddam
Affiliations:
-;-;-;-
Venue:
Finite Elements in Analysis and Design
Year:
2014

Citing 3
Cited 0

Smoothing and accelerated computations in the element free Galerkin method

Journal of Computational and Applied Mathematics - Special issue on TICAM symposium
Review: Meshless methods: A review and computer implementation aspects

Mathematics and Computers in Simulation
A comparison of stress intensity factors obtained through crack closure integral and other approaches using eXtended element-free Galerkin method

Computational Mechanics

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Abstract

A new approach for extracting stress intensity factors (SIFs) by the element-free Galerkin (EFG) class of methods through a modified crack closure integral (MCCI) scheme is proposed. Its primary feature is that it allows accurate calculation of mode I and mode II SIFs with a relatively simple and straightforward analysis even when a coarser nodal density is employed. The details of the adoption of the MCCI technique in the EFG method are described. Its performance is demonstrated through a number of case studies including mixed-mode and thermal problems in linear elastic fracture mechanics (LEFM). The results are compared with published theoretical solutions and those based on the displacement method, stress method, crack closure integral in conjunction with local smoothing (CCI-LS) technique, as well as the M-integral method. Its advantages are discussed.