Stress concentration reduction using different functionally graded materials layer around the hole in an infinite panel

Article type: Research Article

Authors: Goyat, Vikas^{a; b;} | Verma, Suresh^a | Garg, R.K.^a

Affiliations: [a] Department of Mechanical Engineering, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Sonipat, India | [b] Department of Mechanical Engineering, SRM Institute of Engineering and Technology, Delhi NCR Campus, Ghaziabad, India

Correspondence: [*] Corresponding author. Tel.: +919466778712; E-mail: viky.goyat@gmail.com

Abstract: The present work aims to study the stress concentration factor (SCF) reduction using different functionally graded materials (FGMs) layer around the circular hole in an infinite homogeneous material panel for different load conditions. Young’s modulus of FGM layer has been considered to be varied along radial direction while Poisson’s ratio has been kept constant. The extended finite element method (XFEM) is used to find the effect of FGM layer properties i.e. Young’s modulus ratio, power law index and layer thickness on SCF. Four FGM models have been used in the present work out of which power law function based thicker FGM layer ensure the least value of SCF.

Keywords: Functionally graded materials, stress concentration, circular hole, extended finite element method, level set method

DOI: 10.3233/SFC-190232

Journal: Strength, Fracture and Complexity, vol. 12, no. 1, pp. 31-45, 2019