Prediction of interlaminar stresses in laminated plates using global orthogonal interpolation polynomials
Abstract
The interlaminar stresses of laminated plates under transverse loads are presently ascertained by means of a postprocessor for displacementbased FEM solutions from either classical laminationplate theory or the firstorder shear deformation theory. The equilibrium equations of elasticity include the influence of the products of inplane stresses and outofplane rotations, and is therefore applicable to interlaminar stresses for geometrically nonlinear problems. Good agreement is obtained between the results for interlaminar stresses for a set of examples obtained from the present code and those from exact 3D theory of elasticity.
 Publication:

AIAA Journal
 Pub Date:
 November 1992
 DOI:
 10.2514/3.11293
 Bibcode:
 1992AIAAJ..30.2740B
 Keywords:

 Finite Element Method;
 Interlaminar Stress;
 Laminates;
 Orthogonal Functions;
 Plate Theory;
 Bending;
 Interpolation;
 Least Squares Method;
 Shear Strain;
 Stress Analysis;
 Transverse Loads;
 Structural Mechanics