Linear Dynamic Analyses of Laminated Plates and Shells by the Hybrid-Stress Finite-Element Method.

Abstract : ian,Theodore H. H. ;ASRL-TR-172-2DAAG46-73-C-0090DA-1-B-062113-A-661AMMRCCTR-73-40*Shells(Structural forms), *Plates, *Stresses, Composite materials, Laminates, Structural properties, Thermal stresses, Shear stresses, Deformation, Computer programs, Graphics, Curve fitting, Numerical integration, FORTRAN*Finite element analysis, *Structural analysis, FORTRAN 4 programming languageTwo methods of analyzing laminated- composite, linear-elastic plate and shell structures under transient mechanical and/or thermal loadings have been developed based on the hybrid-stress finite-element model. The computer codes corresponding to these two methods were also devel-oped and tested. Both programs are capable of treating thin or thick plates and shell structures. Shells with branches and cutouts can be treated. The outputs of the present computer programs are designed such that they can be easily adapted to any of the existing criteria for the strength of laminated composites. A SURVEY OF SUCH CRITERIA IS PRESENTED. (Author, modified-PL)