Accession Number : ADA327865

Title :   BUCKDEL v 0.9 Users and Theory Manuals: Buckling and Delamination Analysis of Stiffened Laminated Plates.

Descriptive Note : Final rept. 29 Sep 95-29 Apr 96,

Corporate Author : KNOWLEDGE SYSTEMS INC

Personal Author(s) : Pipkins, D. S. ; Atluri, S. N.

PDF Url : ADA327865

Report Date : APR 1996

Pagination or Media Count : 50

Abstract : BUCKDEL, performs geometrically nonlinear analysis of stiffened laminated composite plates with and without delaminations. BUCKDEL allows the user to perform: a linear static solution; a linear buckling (eigenvalue) analysis; and a nonlinear post-buckling analysis through both limit and bifurcation points. There are two finite elements in BUCKDEL; a quasi-conforming triangular laminated plate element based on a refined first order shear theory with seven degrees of freedom per node and a fiber reinforced beam element with seven degrees of freedom per node. The behavior of all materials is assumed to be linearly elastic. The multi-domain modeling method is used for the analysis of laminated plates containing delaminations. In this model, the delaminate, base and the undelaminate are modeled as 3 distinct. On the delamination front, Mindlin's deformation assumption is applied to obtain the relationship between the displacements in the delaminate, base and undelaminate.

Descriptors :   *SOFTWARE ENGINEERING, *BUCKLING, *DELAMINATION, LAMINATES, FINITE ELEMENT ANALYSIS, STIFFENING, GEOMETRIC FORMS, BIFURCATION(MATHEMATICS), FIBER REINFORCEMENT.

Subject Categories : Computer Programming and Software
      Mechanics
      Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE