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Vol.23, No.2, 2023, pp. 191–195 |
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SIMULATION OF VARIOUS FRACTURE MODELS BY VARYING GEOMETRICAL PARAMETERS USING TAGUCHI’S DOE K.N. Bharath1, Saleemsab Doddamani2*, A.M. Rajesh3, K. Mohamed Kaleemulla4 1) Department of Mechanical Engineering, GM Institute of Technology, Davangere, Karnataka, INDIA 2) Department of Mechanical Engineering, Jain Institute of Technology, Davangere, Karnataka, INDIA *email: saleemsabdoddamani@gmail.com 3) Department of Mechanical Engineering, SJM Institute of Technology, Chitradurga, Karnataka, INDIA 4) Department of Mechanical Engineering, University BDT College of Engineering, Davangere, Karnataka, INDIA
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Abstract In the current fracture study, the notable Irwin’s work utilizes the Westergaard theory and indicates that, for elastic materials, the displacement and stress in the vicinity of the crack tip is related to strain energy release rate and represented by a constant K. The main aim of the research work is to find the stresses and displacements near the crack-tip using a finite element simulation tool ANSYS®. In this work, models used for simulations are single edge notch specimen, central crack, compact tension specimens with geometric parameters a/W = 0.40, 0.45, and 0.50, and thickness of specimen is considered to be 7, 10, and 12 mm. For the said parameters, Taguchi’s design of experiments (DOE) has been carried out. Von-Mises stress is lowest for a/W = 0.40 for almost all specimens except compact tension specimen. For the compact tension specimen, the von-Mises stress remains constant for a/W = 0.45 to 0.50. Hence, it will be the designers’ flexibility to select any value of a/W ratio between 0.45 to 0.50. Keywords: fracture toughness, a/W ratio, Taguchi’s method, CT specimens |
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