Study on the Stress Intensity Factor for Mixed Mode Surface Crack under Three Point Bending

Wei Xie; Qi Qing Huang; Masanori Kikuchi

doi:10.4028/www.scientific.net/AMR.33-37.85

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Examination of the Optimal Local Model Size of Structure with a Surface Crack in the 3-D Local Hybrid Method
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Probabilistic Fracture Mechanics Analysis for Optimization of High-Pressure Vessel Inspection
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Study on the Stress Intensity Factor for Mixed Mode Surface Crack under Three Point Bending
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Different Delamination Cracks during Fracture and Their Influences on the Fracture of X70 Pipeline Steel
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Crack Tip Plasticity By Classic Dislocation Dynamics
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Effective Use of Commercial FEM Software in 2-Dimentional Crack Problems
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Fatigue Analysis for CNG Storage Gas Pressure Vessel Based on ANSYS
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 33-37Study on the Stress Intensity Factor for Mixed...

Study on the Stress Intensity Factor for Mixed Mode Surface Crack under Three Point Bending

Abstract:

In the virtual crack closure method (VCCM), the energy release rate is computed based on the results of finite element calculation, and the stress intensity factor (SIF) is computed from the energy release rate. In this paper, the stress intensity factor of mixed-mode surface cracks under three point bending is studied by using the three dimensional modified virtual crack closure method (MVCCM). The modified virtual crack closure method is required to open one element face area whose shape is arbitrary and finite element widths are unequal across the crack front. The effect of the distance between the location of load and crack face, crack shape and crack depth to the stress intensity factor is also discussed, along with practical results and conclusions.