Civil Engineering ETDs

Publication Date

4-10-1978

Abstract

The emphasis in this dissertation is the determination of buckling loads on many types of structures. The available solutions are usually written in a complex form that requires large amounts of time in order to find the buckling loads. For stiffened structures the use of finite difference calculus will provide a vehicle for obtaining solutions that are not as complex. In addition, the use of a reasonable approximation for the stiffener behavior allows the solution to be written in closed from. Direct substitution of the elastic and geometric properties of the stiffeners gives the buckling loads. The application of finite difference calculus for the structures that are solved in this dissertation is an extension of accepted methods in structural mechanics. The cases that are solved include beams, polygonal frames, circular rings, rectangular grids, cylindrical rings, stiffened plated and stiffened cylindrical shells. In all cases the accuracy of the given solutions is shown to be very good for engineering purposes. All of the solutions are given in algebraic form and the only computational effort that is required is to check several buckling modes to ensure that a minimum load has been found.

Document Type

Dissertation

Language

English

Degree Name

Civil Engineering

Level of Degree

Doctoral

Department Name

Civil Engineering

First Committee Member (Chair)

Cyrus Omid Varan

Second Committee Member

Marion Marvin Cottrell

Third Committee Member

Gerald William May

Fourth Committee Member

Alfred Samuel Carasso

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