DESIGN AND ANALYSIS OF STRUCTURAL ELEMENTS
Abstract
Because the exact theoretical solution of warped surfaces is so cumbersome, an experimental investigation was made in order to attempt a correlation between a simplified theory and experimental results. Stresses and displacements were obtained experimentally for warped surfaces and compared with similar flat plates. Results indicate that the axial stresses in a flat plateARE OF THE SAME ORDER OF MAGNITUDE AS THE AXIAL STRESSES IN A HYPERBOLIC PARABOLOID AND THAT THE BENDING STRESSES IN A FLAT PLATE ARE MANY TIMES GREATER THAN THE CORRESPONDING STRESS IN A GEOMETRICALLY SIMILAR HYPERBOLIC PARABOLOID. Deflections in a flat pl te are an order of magnitude greater than the corresponding de lections in geometrically similar hyperbolic paraboloids. Thus, experimental evidence indicates that a favorable weight to strength ratio may be obtained by slight changes in the design of structural elements by warping the s rface. The usual simplified theory for hyperbolic paraboloids has been found unreliable as there is little correlation between theory and experiment. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 04, 1961
- Accession Number
- AD0260825
Entities
People
- Jehangir F. Mirza
- Robert S. Rowe
Organizations
- Duke University