ANALYSIS OF PERFORATED SHEET METALS WITH SQUARE AND HEXAGONAL HOLES USING FINITE ELEMENT METHOD
Keywords:Perforated Sheet Metals, Effective Stiffness Ratio, Effective Yield Strength Ratio, Relative Density, Stress Distribution Profile, FEA , Factor of Safety
Since the manufacturers and users of sheet metal parts are aiming at reducing the weight of the component, some components are made out of perforated sheet metals. As the use of perforated sheet metals is wide, its behavioural study is important. An attempt is made here to study its structural behaviour. Finite element analysis is used to analyze the deformation behaviour of perforated sheet metals. After the modelling of perforated sheet metal plate having square and hexagonal perforation, uniaxial tensile load is applied. The FEA is carried out using commercial FE software ANSYS to find its structural behaviour with respect to relative density and the results obtained are compared with literature. Sheet metals with hexagonal perforations are found to have better load bearing capacity and higher stiffness for particular relative density and hence they are better than square perforations at higher factor of safety.
Seung Chul Baik, Kyu Hwan Oh and Dong Nyung Lee, (1996), “Analysis of the Deformation of a Perforated Sheet under Uniaxial Tension”, Journal of Materials Processing Technology,Vol.58, 139-144.
Ochsner A, Winter W and Kuhn G (2001), “Elastic-Plastic Behaviour of Perforated Aluminium Under Tension and Compression”, Technical Mechanics, Vol.21, 101-108.
Litewka A (1998), “Homogenization of the Elastoplastic Behavior of Perforated Plates”, Nuclear Engineering and Design, Vol. 57, 417-425.
Van Rens B J E, Brekelmans W A M, Baaijens F P T (1998), “Experimental Study of the Effective Yield Surface of Perforated Materials”, Computers and Structures, Vol.69, 537-545.
D. C. Webb, K. Kormi, S. T. S. Al-Hassani, (1995), “Use of FEM. in performance assessment of perforated platei subject to general loading conditions”, International Journal of Pressure Vessels and Piping, Vol.64, 137-152.
Designers, Specifiers and Buyers (1993), “Handbook for Perforated Metals, “Industrial Perforators Association publication”.
Chen K T, Ting K and Yang W S (2000), “Stress Analysis of Two-Dimensional Perforated Plates using Boundary Element Alternating Method”, Computers and Structures, Vol.75, 515-527.