STABILITY OF PLATES WITH CUT-OUTS

The load carrying capacity of plates is an area of great interest to the structural engineer. At times operational requirements and/or the desire to reduce the weight of the structure requires the introduction of cut-outs. It is expected that the size, shape and location of the cut-out will have an effect on the load carrying capacity of the plates. Unless the effect can be determined reliably the strength to weight ratio of the plate with cut-out(s) could not be optimized. The technique used in this paper to determine the stability of plates with cut-outs makes use of the mode shapes and frequencies of the plates without the cut-outs, which is considered the 'reference' structure, having the same boundary conditions as the plates with the cut-outs. The effect of size, shape and location of the cut-outs is expressed as a displacement dependent loading on the 'reference' plate through the minimization of the 'incremental' variational integral, namely the difference between the strain energy and the virtual work done by the inertia forces of the structure in excess or lack of the counterpart of the 'reference' structure. (Author)

• Corporate Authors:

  Catholic University of America

  620 Michigan Avenue, NE
  Washington, DC  United States  20064
• Authors:
  • Basdekas, N L
• Publication Date: 1971-2

Media Info

• Pagination: 18 p.

Subject/Index Terms

• TRT Terms: Elastic analysis; Inertia (Mechanics); Inertial forces; Load limits; Ratios; Strength of materials; Weight
• Uncontrolled Terms: Cutouts; Elastic stability; Load carrying capacity
• Old TRIS Terms: Strength weight ratio
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00019459
• Record Type: Publication
• Source Agency: National Technical Information Service
• Contract Numbers: NSF-GK-23747
• Files: TRIS
• Created Date: Nov 25 1973 12:00AM