Title: Stress and strain concentration factors for flat plate with opposite side U-shaped notches under tension
Authors: Vinayak H. Khatawate; M.A. Dharap; R.I.K. Moorthy
Addresses: Department of Mechanical Engineering, Pillai Institute of Information Technology, Navimumbai – 410206, India; VJTI, Mumbai – 400019, India ' Department of Mechanical Engineering, VJTI, Mumbai – 400019, India ' Department of Mechanical Engineering, Pillai Institute of Information Technology, Navimumbai – 410206, India
Abstract: Engineering components often exhibit unavoidable local stress concentrations due to steps, notches or other geometrical discontinuities. Such stress concentration sites under service loading may drastically reduce the operational lifetime of a structure. In order to preserve structural integrity, it is essential to understand the stress-strain responses on the failure critical areas (notches). In this paper, the elastic stresses and strains of finite thickness plate containing a U-shaped opposite side notches with varying notch configurations are systematically investigated. The plate is subjected to uniaxial tension. For the analysis of a plate, finite element analysis (FEA) is used. It is shown that even if the plate is in the elastic state, the stress and strain concentration factors are different. It is also shown that the effect of Poisson's ratio is significant on the strain concentration factor. The accuracy of finite element results is verified with analytical solutions available in the literature.
Keywords: U-shaped notches; finite element analysis; FEA; stress concentration factor; strain concentration factor; linear elasticity; flat plates; structural integrity; failure critical areas; uniaxial tension.
International Journal of Design Engineering, 2016 Vol.6 No.3, pp.173 - 195
Received: 31 Jan 2015
Accepted: 29 Aug 2015
Published online: 09 Sep 2016 *