Affiliation:
1. Department of Engineering Mechanics University of Nebraska Lincoln, Nebraska 68508
Abstract
In recognizing the increasing availability of various composite materials, this paper promotes a new approach to the design of the plate and shell structures. It is based on the loading and shape require ments of the structure to determine a particular composite whose constituents and their geometric arrangements are such that a certain design criterion will be satisfied. For the preliminary study of such an approach, a momentless criterion is adopted in the present paper for the design of axisymmetrically loaded shells of revolution. To maintain the shell in a momentless state, the general equation which governs the shape, loadings and the material properties of the shell, and the displacements equations have been derived. Applications to the pressure vessels with ellipsoidal bulkheads show that composite materials with variable elastic constants will be needed for constructing a momentless vessel. Numerical examples are presented to illustrate the proposed method of approach and provide as guidelines for the development of new composites.
Subject
Materials Chemistry,Mechanical Engineering,Mechanics of Materials,Ceramics and Composites
Reference14 articles.
1. K.H. Sayers and D.P. Hanley, "Test and Analysis of Graphite-Fiber, Epoxy-Resin Composite," AIAA Paper No. 68-1036 (1968).
2. S.W. Tsai, "Mechanics of Composite Materials, Part I-Introduction, Part II-Theoretical Aspects," Air Force Materials Laboratory, AFML-TR-66-149, Part I (June, 1966), Part II (November, 1966).
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