Abstract
This work deals with a 2D finite element simulation of nonplanar multiple cracks using fracture and crack propagation analysis. This analysis was performed by using the developed source code software written by Visual Fortran Language. This source code includes the adaptive mesh generation utilizing the advanced front method and also the mesh refinement process. In order to correctly represent the field singularity, the quarter‐point singular elements are constructed around the tip of the crack. The crack growth criteria are used to predict the crack growth direction by utilizing the circumferential stress factor in calculating the yielding stress in elastic fracture assumptions. The stress intensity factor determination is one of the most critical procedures as it determines the crack initiation and propagation mechanism. Moreover, the stress intensity factor histories during the crack growth are measured with the use of equivalent domain integral methods. The crack path simulation and stress intensity factor calculations are compared with the literature and revealed that the results are in agreement with research carried in this domain.
Highlights
Characterisation of the mechanical behavior of the solid materials of the crack-free surface involves important influencing factors such as stress, strain, force, and loading system to which the material is subjected. e crack growth mechanism of these surfaces is analysed by the two categories of fracture mechanics, namely, linear elastic fracture mechanics and elastic-plastic fracture mechanics [1]
Stress intensity factors can be computed by various methods, such as the boundary element method (BEM)-finite element method (FEM), both FEM and BEM [5]. e critical problem encountered by the researcher in fracture mechanics is opting the appropriate method for accurate prediction stress intensities
Huynh et al [20] introduced a novel and effective computational approach that is based on polygonal X-FEM for the analysis of 2D linear elastic fracture mechanics problems. e PolyXFEM is equipped with a new numerical integration technique that uses the concept of Cartesian transformation method over polygonal domains. is method is computationally more efficient compared to the two-level mapping integration commonly used on polygons. is study presents a twodimensional finite element simulation of nonplanar multiple cracks using fracture and crack propagation analysis with the aid of a developed source code program written by Visual Fortran Language
Summary
Characterisation of the mechanical behavior of the solid materials of the crack-free surface involves important influencing factors such as stress, strain, force, and loading system to which the material is subjected. e crack growth mechanism of these surfaces is analysed by the two categories of fracture mechanics, namely, linear elastic fracture mechanics and elastic-plastic fracture mechanics [1]. Stress intensity factor plays a major role in predicting and analysing the crack initiation and growth in the domain of fracture mechanics analysis.
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