Keywords

Guided missiles, Design and construction, Shells, Engineering, Lower-bound theorem, Limit analysis, Finite element analysis (elastic code adaptation), Ramjet inlet duct, Local plastic deformation for weight reduction

Abstract

A ramjet inlet duct structure has been designed using nonlinear structural analysis to allow local plastic deformations which result in structural weight reduction. To establish the feasibility of reduced shell thickness, the Lower-Bound Theorem of limit analysis has been applied using an existing finite element analysis computer code intended for elastic analysis. The results of the analysis were verified by structural testing. Predicted stresses and deflections showed good correlation with measured values up to the point of failure. This work was supported by the U.S. Air Force Aero Propulsion Laboratory, Wright-Patterson Air Force Base, Ohio, under Contract No. F33615-72-C-1366.

Notes

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Graduation Date

1977

Advisor

Jenkins, David R.

Degree

Master of Science (M.S.)

College

College of Engineering

Degree Program

Engineering

Format

PDF

Pages

68 pages

Language

English

Rights

Public Domain

Length of Campus-only Access

None

Access Status

Masters Thesis (Open Access)

Identifier

DP0012925

Subjects

Guided missiles -- Design and construction; Shells (Engineering); Shells (Engineering)--Analysis; Plastic analysis (Engineering); Elastic analysis (Engineering)--Computer programs; Structural analysis (Engineering)--Computer programs; Structural design--Analysis

Collection (Linked data)

Retrospective Theses and Dissertations

Accessibility Status

Searchable text

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