Masters Theses


M. Brad Parks


"In recent years fuel economy has become one of the major criteria for the design of automobiles. In order to improve the efficiency of their vehicles many automotive designers are substituting high strength sheet steels for traditional materials of lower strength. This thesis discusses experimental work which was done to determine the representative mechanical properties and stress-strain relationships of a select group of high strength sheet steels with nominal yield strengths ranging from 80 to 140 ksi. The results show that high strength sheet steels are quite anisotropic with the variation in measured properties depending on the type of sheet steel, the direction of testing and the type of testing.

The literature was reviewed in depth to determine the effects of strain rate and fatigue on the design of automotive components using high strength sheet steels. It was found that increasing strain rates generally increased the strength of these steels while decreasing their ductility. The literature review of fatigue analysis revealed that even the most accurate fatigue analysis methods currently available to the automotive engineer predict fatigue lives that differ substantially from the actual lives obtained from tests."--Abstract, page ii.


Yu, Wei-wen, 1924-

Committee Member(s)

Andrews, William A., 1922-2009
Hansen, Peter G., 1927-2010


Civil, Architectural and Environmental Engineering

Degree Name

M.S. in Civil Engineering


American Iron and Steel Institute


University of Missouri--Rolla

Publication Date

Fall 1983


xv, 166 pages

Note about bibliography

Includes bibliographical references (pages 156-160).


© 1983 M. Brad Parks, All rights reserved.

Document Type

Thesis - Restricted Access

File Type




Subject Headings

Steel, Structural -- Mechanical properties
Steel -- Cold working
Strains and stresses

Thesis Number

T 4977

Print OCLC #


Electronic OCLC #


Link to Catalog Record

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