Accession Number : ADA130261

Title :   Transverse Shear Effects in Bimodular Composite Laminates.

Descriptive Note : Technical rept.,

Corporate Author : OKLAHOMA UNIV NORMAN SCHOOL OF AEROSPACE MECHANICAL AND NUCLEAR ENGINEERING

Personal Author(s) : Bert,C W ; Gordaninejad,F

PDF Url : ADA130261

Report Date : Apr 1983

Pagination or Media Count : 32

Abstract : A closed-form solution for the Timoshenko-type shear correction coefficient (K2) governing the deflection of bimodular composite laminates in cylindrical bending is presented. The bending-stress distribution for a laminate constructed of bimodular materials (which have different elastic moduli in tension and compression) is used in the two-dimensional equilibrium equation to obtain the transverse shear-stress distribution. This shear-stress distribution is used to obtain expressions for the shear correction coefficient (based on equivalent shear strain energy) and the maximum dimensionless transverse shear stress (Tau xz) max. Finally, the effects of the elastic-constant ratios on the neutral-surface location and shear correction coefficient for laminates consisting of either unimodular or bimodular materials are studied.

Descriptors :   *Laminates, *Composite materials, *Shear stresses, *Mathematical models, Elastic properties, Flexible materials, Shear strength, Coefficients, Derivatives(Mathematics)

Subject Categories : Laminates and Composite Materials
      Numerical Mathematics
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE