Keywords

Shells (Engineering), Structural analysis (Engineering), Data processing

Abstract

Several search methods for unconstrained minimization in the minimum weight design of a stiffened cylindrical shell are investigated. The cylindrical shell, under study, is stiffened with bar shaped stiffeners in the longitudinal and circumferential directions, and capable of being loaded both axially and radially with up to ten separate load conditions. For this investigation, it was necessary to alter an unconstrained minimization program for use on the IBM 360 computer by employing double precision techniques. The computer runs obtained on this system are compared with those provided by the prior work of William Morrow and Lucien Schmit. The results show, as great as, a 7% reduction in the final weight. Either slight alterations in the initial stiffener and cylinder dimensions, or the conversion of the program to double precision is responsible for the change. Regardless of which, the sensitivity or inexactness of the minimization process is apparent.

Notes

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Graduation Date

Summer 1972

Semester

Summer

Advisor

Block, David T.

Degree

Master of Science (M.S.)

College

College of Engineering

Format

PDF

Pages

44 p.

Language

English

Rights

Public Domain

Length of Campus-only Access

None

Access Status

Masters Thesis (Open Access)

Identifier

DP0012151

Subjects

Shells (Engineering), Structural analysis (Engineering) -- Data processing

Collection (Linked data)

Retrospective Theses and Dissertations

Accessibility Status

Searchable text

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