A Study on The Application of Virtual Crack Closure Technique and Virtual Crack Extension to Calculate Strain Energy Release Rate on Loaded Cracked Flat Plate
Keywords:
strain energy release rate, fracture mechanic, virtual crack extension, virtual crack closure techniqueAbstract
This paper compares two methods for calculating the strain energy release rate (SERR) which are the virtual crack closure technique (VCCT) and virtual crack extension (VCE). SERR is the amount of energy used for crack formation per fracture surface area. The VCCT method assumes the energy to form a crack is the same as the energy to close the crack, while the VCE method creates a virtual crack extension to calculate the change in strain energy. The study applies both VCE and VCCT to calculate the SERR for different element size, crack size, and plate thickness. The results show that the VCCT method tend to give more accurate outcome. The strain energy release rate tends to increase as the crack length increases but decreases as the plate gets thicker. Overall, this research contributes to the understanding and application of SERR calculation methods, shedding light on their accuracy and providing insights into the effects of crack length, boundary conditions, and plate thickness on SERR.
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