p-Version finite element approximations of stress intensity factors for cracked plates including shear deformation

1995 ◽  
Vol 52 (3) ◽  
pp. 493-502 ◽  
Author(s):  
Kwang Sung Woo ◽  
Chae Gue Lee
Keyword(s):  
Finite Element ◽  
Stress Intensity ◽  
Shear Deformation ◽  
Stress Intensity Factors ◽  
Intensity Factors ◽  
Finite Element Approximations ◽  
Cracked Plates

On the Crack Propagation Trajectory of Central Cracked Plates under Mixed Mode Loading Conditions

2011 ◽  
Vol 462-463 ◽  
pp. 154-159
Author(s):  
Miloud Souiyah ◽  
Andanastuti Muchtar ◽  
Ahmad Kamal Ariffin
Keyword(s):  
Finite Element ◽  
Stress Intensity ◽  
Crack Propagation ◽  
Stress Intensity Factors ◽  
Mixed Mode ◽  
Loading Conditions ◽  
Intensity Factors ◽  
Element Analysis ◽  
Cracked Plates ◽  
Fortran Language

A Finite Element (FE) programme for crack propagation was developed by using a source code written in the FORTRAN language to evaluate the Stress Intensity Factors (SIFs) and to predict the crack propagation trajectory. In this study, a Central Cracked Plate (CCP) with two holes under mixed mode (I & II) loading conditions is considered. Finite Element Analysis (FEA) combined with the concepts of Linear Elastic Fracture Mechanics (LEFM) provides a practical and convenient means to study the fracture and crack growth of the solid materials. The Displacement Extrapolation Technique (DET) is performed on this work in order to compute the stress intensity factors (SIFs) during the crack propagation. Additionally, to validate the capability and the reliability of this developed FE programme, the results of the current study are compared with experimental results from the literature.

scholarly journals Numerical simulation of the crack 2D by the finite element incorporated the discontinuity

2008 ◽  
Vol 30 (2) ◽  
pp. 80-88
Author(s):  
Nguyen Truong Giang
Keyword(s):  
Finite Element ◽  
Stress Intensity ◽  
Stress Intensity Factors ◽  
Extended Finite Element Method ◽  
Source Code ◽  
Intensity Factors ◽  
Extended Finite Element ◽  
Displacement Fields ◽  
Cracked Plates ◽  
Stress And Deformation

Determining stress intensity factors is important in fracture mechanics. The extended finite element method (XFEM) provides a robust and accurate to determine factors. This paper describes some results from the analysis of cracked plates using XFEM. Extended finite elements allow the entire crack to be represented independently of the meshing. The elements employ discontinuous functions and the facture mechanics two dimensional asymptotic crack tip displacement fields. The Fortran source code of Cast3M applies these elements to a set of examples. The obtained stress and deformation fields are used to compute stress intensity factors via interaction integrals. The results are compared with these obtained from conventional FEM to demonstrate the advantages of the employing the new elements.

A Coupled SBFEM-FEM Approach for Evaluating Stress Intensity Factors

2013 ◽  
Vol 353-356 ◽  
pp. 3369-3377 ◽  
Author(s):  
Ming Guang Shi ◽  
Chong Ming Song ◽  
Hong Zhong ◽  
Yan Jie Xu ◽  
Chu Han Zhang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stress Intensity ◽  
Stress Intensity Factors ◽  
Complex Geometry ◽  
Stress Singularity ◽  
Intensity Factors ◽  
Finite Element Software ◽  
Scaled Boundary Finite Element ◽  
Element Method

A coupled method between the Scaled Boundary Finite Element Method (SBFEM) and Finite Element Method (FEM) for evaluating the Stress Intensity Factors (SIFs) is presented and achieved on the platform of the commercial finite element software ABAQUS by using Python as the programming language. Automatic transformation of the finite elements around a singular point to a scaled boundary finite element subdomain is realized. This method combines the high accuracy of the SBFEM in computing the SIFs with the ability to handle material nonlinearity as well as powerful mesh generation and post processing ability of commercial FEM software. The validity and accuracy of the method is verified by analysis of several benchmark problems. The coupled algorithm shows a good converging performance, and with minimum additional treatment can be able to handle more problems that cannot be solved by either SBFEM or FEM itself. For fracture problems, it proposes an efficient way to represent stress singularity for problems with complex geometry, loading condition or certain nonlinearity.

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