A General Partial Discretization Methodology for Interlaminar Stress Computation in Composite Laminates
Tarun Kant; Sandeep S. Pendhari; and Yogesh M. Desai

Source CMES: Computer Modeling in Engineering & Sciences, Vol. 17, No. 2, pp. 135-162, 2007
Download Full length paper in PDF format. Size = 468,445 bytes
Keywords composite laminates, partial finite element, boundary value problem, initial value problem, numerical integration method
Abstract A two-point boundary value problem (BVP) is formed in the present work governed by a set of first-order coupled ordinary differential equations (ODEs) in terms of displacements and the transverse stresses through the thickness of laminate (in domain -h/2 <z <h/2) by introducing partial discretization methodology only in the plan area of the three dimensional (3D) laminate. The primary dependent variables in the ODEs are those which occur naturally on a plane z=a constant. An effective numerical integration (NI) technique is utilized for tackling the two-point BVP in an efficient manner. Numerical studies on cross-ply and angle-ply composite plates are performed and presented, involving both validation and solution of new problems.
PDF download PDF