Free vibration analysis of laminated composite skew hypar shells are presented using a C-0 finite element (FE) formulation based on higher order shear deformation theory (HSDT). Effect of cross curvature is included in the formulation. The C-0 finite element formulation has been done quite efficiently to overcome the problem of C-1 continuity associated with the HSDT. The isoparametric FE used in the present model consists of nine nodes with seven nodal unknowns per node. Since there are no results available in the literature based on HSDT on the problem of free vibration of laminated composite skew hypar shells, present results are validated with the results available for laminated composite hypar shells without skew angle and with the results available for laminated composite skew plates. New results are presented by varying geometry, boundary conditions, ply orientations and skew angles. (C) 2012 Elsevier Ltd. All rights reserved.
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Hindustan Univ, Sch Aeronaut Sci, Madras 603103, Tamil Nadu, India
Tech Mahindra Ltd, Bangalore 560100, Karnataka, IndiaHindustan Univ, Sch Aeronaut Sci, Madras 603103, Tamil Nadu, India
Venkatachari, Anand
Natarajan, Sundararajan
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Indian Inst Technol Madras, Dept Mech Engn, Integrated Modelling & Simulat Lab, Madras 600036, Tamil Nadu, IndiaHindustan Univ, Sch Aeronaut Sci, Madras 603103, Tamil Nadu, India
Natarajan, Sundararajan
Ganapathi, Manickam
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Deemed Univ, Vellore Inst Technol, Sch Mech Engn, Vellore 632014, Tamil Nadu, IndiaHindustan Univ, Sch Aeronaut Sci, Madras 603103, Tamil Nadu, India