Accession Number : AD0735936

Title :   A Computer Program for Analysis of Stiffened Plates Under Combined inplane and Lateral Loads.

Descriptive Note : Technical rept.,

Corporate Author : CALIFORNIA UNIV BERKELEY DIV OF STRUCTURAL ENGINEERING AND STRUCTURAL MECHANICS

Personal Author(s) : Kavlie,Dag ; Clough,Ray W.

Report Date : MAR 1971

Pagination or Media Count : 71

Abstract : The finite element method is used as the basis of computer program for analysis of stiffened plates. Triangular and quadrilateral plate elements and beam elements may be used for idealization of the stiffened plates. The plate elements may have isotropic or orthotropic material properties. The stiffeners are assumed to be symmetric about the midplane of the plate. This assumption uncouples the plane stress and the plate bending problems. If the inplane stresses are not known in advance, the plane stress problem can be solved as a first step. The next step may be to solve the plate bending problem. The effect of the membrane stresses on the plate bending behavior is taken care of in this case by adding the geometric stiffness matrix to the elastic stiffness matrix. Alternatively the stability problem may be solved, finding the critical buckling eigenvalue and the corresponding mode shape. A listing of the FORTRAN IV computer program is given in the report, and a few examples of bending and buckling of stiffened plates are presented. The program has been developed and tested on the CDC 6400 computer. (Author)

Descriptors :   (*SHIP PLATES, MECHANICAL PROPERTIES), (*COMPUTER PROGRAMMING, MECHANICAL PROPERTIES), LOADS(FORCES), METAL PLATES, BEAMS(STRUCTURAL), BENDING, BUCKLING, STRESSES

Subject Categories : Computer Programming and Software
      Marine Engineering
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE