Thesis (M.S.)--University of Missouri-Columbia, 2005. / The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (July 14, 2006) Includes bibliographical references.

Thesis (M.C.E.)--University of Delaware, 2007. / Principal faculty advisor: Jennifer Righman McConnell, Dept. of Civil & Environmental Engineering. Includes bibliographical references.

Thesis (Ph. D.)--Lehigh University, 2000. / Includes vita. Includes bibliographical references (leaves 154-162).

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This research into the properties of a 5"x5"x16lb W.F., A 36 Steel, rolled structural member was undertaken to determine the following: i - Yield stress distribution over the cross section of the member as determined by coupon tests. ii - Development of strain over the cross section of the member, as measured by electric strain gauges, when subjected to a) Axial loading, b) Bending Moment. iii - The effect of previous loading of a member as a column into the region of yielding on its subsequent behaviour as a beam loaded to failure. The following results were obtained: i - Yield stress, particularly the upper yield stress was not uniform over the cross section. ii - The strain distribution in the plastic range was not uniform and varied from cross section to cross section and even at closely adjacent points on the same cross section. iii - Failure of the member, due to inadequate lateral support when loaded as a column, occurred before complete yielding was achieved. The effect of this previous loading on the subsequent behaviour of the member as a beam loaded to failure was inconclusive. / Applied Science, Faculty of / Civil Engineering, Department of / Graduate

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A research report submitted to the Faculty of Engineering and the Built Environment, University of the Witwatersrand, Johannesburg, in partial fulfilment of the requirements for the degree of Master of Science in Engineering, August 2019 / An extension to classical lamination theory (CLT) is presented to analyse the natural fre- quencies and critical buckling loads of simply supported functionally graded plates. The variation of the through-thickness properties of the plate is governed by a power law which is subsequently represented by a polynomial series of su cient order and varies according to the law of mixtures or the Mori-Tanaka Homogenization method. The sti ness matrices are found, from which the position of the neutral plane is established which allows for the governing equations for the natural frequency and critical buckling load to be derived using the Rayleigh-Ritz method. The natural frequency and critical buckling loads are determ- ined for various volume indices, aspect and span ratios and the accuracy thereof is validated against 2D, 3D and quasi-3D solutions found in literature. A comparison with CLT found that the present study produces natural frequencies and critical bucking loads which are more accurate and which converge faster than CLT. / NG (2020)