STRESSES IN REINFORCED, PERFORATED, RECTANGULAR PLATES LOADED BY TRANSVERSE PRESSURE.
Abstract
A combined theoretical and photoelastic investigation was conducted to develop optimum reinforcements for penetrations in submarine pressure bulkheads. Experimental results obtained on unreinforced holes in plates under biaxial bending showed good correlation with existing data for uniaxial bending from which stresses are determinable for any biaxial bending moment ratio. In addition, stresses were determined for various biaxial bending ratios on plates with apertures reinforced according to a procedure currently in use by the U. S. Navy Department. In order to acquire this information it was necessary to develop a new photoelastic technique which is described in detail. This procedure was used successfully at room temperature to examine reinforcements on moment loaded plates. Problems arose in the application of the technique to pressure loaded plates. Therefore, stress freezing was employed for these studies. However, the large deflections induced during these latter studies raised questions as to the accuracy of the data. As a consequence, further investigation appears indicated before design optimization procedures are achievable. This report contains complete details of the investigation together with recommendations for an approach which should yield reliable data for designing optimum reinforcements at apertures in pressurized bulkheads. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1964
- Accession Number
- AD0615480
Entities
People
- Herbert Becker
- Ralph Papirno