A New Displacement-based Approach to Calculate Stress Intensity Factors With the Boundary Element Method
AUTOR(ES)
Gonzalez, Marco, Teixeira, Paulo, Wrobel, Luiz C., Martinez, Manuel
FONTE
Lat. Am. j. solids struct.
DATA DE PUBLICAÇÃO
2015-09
RESUMO
Abstract The analysis of cracked brittle mechanical components considering linear elastic fracture mechanics is usually reduced to the evaluation of stress intensity factors (SIFs). The SIF calculation can be carried out experimentally, theoretically or numerically. Each methodology has its own advantages but the use of numerical methods has become very popular. Several schemes for numerical SIF calculations have been developed, the J-integral method being one of the most widely used because of its energy-like formulation. Additionally, some variations of the J-integral method, such as displacement-based methods, are also becoming popular due to their simplicity. In this work, a simple displacement-based scheme is proposed to calculate SIFs, and its performance is compared with contour integrals. These schemes are all implemented with the Boundary Element Method (BEM) in order to exploit its advantages in crack growth modelling. Some simple examples are solved with the BEM and the calculated SIF values are compared against available solutions, showing good agreement between the different schemes.
Documentos Relacionados
- The scs' boundary element: characterization of boundary element-associated factors.
- The boundary element method applied to incompressible viscous fluid flow
- Stress-Based Finite Element Methods for Dynamics Analysis of Euler-Bernoulli Beams with Various Boundary Conditions
- Immersed Boundary Method Based on the Implementation of Conservation Equations along the Boundary using Control-Volume Finite-Element Scheme
- Acoustic displacement triangle based on the individual element test