A COMPUTER PROGRAM FOR ANALYSIS OF STIFFENED PLATES UNDER COMBINED INPLANE AND LATERAL LOADS

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. 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)

• Supplemental Notes:
  • Continuation of Contract N00014-67-A-0114-0020
• Corporate Authors:

  University of California, Berkeley

  Berkeley, CA  United States  94720
• Authors:
  • Kavlie, D
  • Clough, R W
• Publication Date: 1971-3

Media Info

• Pagination: 71 p.

Subject/Index Terms

• TRT Terms: Buckling; Deflection; Finite element method; Stiffened plates; Structural plates
• Old TRIS Terms: Plate deflections
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00033693
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: UCSESM-71-4 Tech Rpt
• Contract Numbers: N00014-69-A00201045
• Files: TRIS
• Created Date: Aug 15 1972 12:00AM