Improved transverse shear stresses in composite finite elements based on first order shear deformation theory

authored by

R. Rolfes, K. Rohwer

Abstract

A method for calculating improved transverse shear stresses in laminated composite plates, which bases on the first-order shear deformation theory is developed. In contrast to many recently established methods, either higher-order lamination theories or layerwise theories, it is easily applicable to finite elements, since only C⁰-continuity is necessary and the numerical effort is low. The basic idea is to calculate the transverse shear stresses directly from the transverse shear forces by neglecting the influence of the membrane forces and assuming two cylindrical bending modes. Shear correction factors are no longer required, since the transverse shear stiffnesses are also provided. Numerical examples for symmetric cross-ply and antisymmetric angle-ply laminates show the superiority of the method against using shear correction factors. Furthermore, results obtained with MSC/NASTRAN, which uses a similar but simplified approach, are surpassed.

External Organisation(s)

German Aerospace Center (DLR) (e.V.) Location Braunschweig

Type

Article

Journal

International Journal for Numerical Methods in Engineering

Volume

40

Pages

51-60

No. of pages

10

ISSN

0029-5981

Publication date

04.12.1998

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Numerical Analysis, General Engineering, Applied Mathematics

Electronic version(s)

https://doi.org/10.1002/(SICI)1097-0207(19970115)40:1<51::AID-NME49>3.0.CO;2-3 (Access: Unknown)