DESIGN AND ANALYSIS OF STRUCTURAL ELEMENTS
Abstract
Continued research is reported on the design and analysis of structural elements. The structures were manufactured using alternate 90 degrees lay-ups of 181A Volan glass cloth and Polyester Resin 4116. The 1/8 inch thick shells were composed of four hyperbolic paraboloidal panels, each of which is a combination of four typical quadrants. Two series of tests are described and discussed. The first series of tests indicate that the effect of lateral restraint is indeed significant. Total restraint may be a practical impossibility, but partial restraint may be realized by increasing edged members and lateral braces. The hyperbolic paraboloidal shell is approximately twice as rigid in the inverted position than in the normal position. The tests to failure indicate that this type of structure, in most cases, will buckle before it will fracture. This condition also calls for increased sections along the edges and ridges. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 04, 1961
- Accession Number
- AD0256345
Entities
People
- Jehangir F. Mirza
- Robert S. Rowe
Organizations
- Duke University