Use this URL to cite or link to this record in EThOS: http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.485516
Title: Analytic Structures
Author: Lewis, Kenneth Anthony
Awarding Body: University of Southampton
Current Institution: University of Southampton
Date of Award: 2007
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Abstract:
This thesis presents the development of an innovative method for describing the behaviour of steel members under load. It uses a direct solution to a set of six differential equations key to the state of a cross-section of a member. Because the method focuses upon cross-sectional response to· loading, it incorporates member deflection and is ideal for use in numerical equation solvers which are becoming more prevalent as personal computing power continues to rise. The six equations are described, a novel method for ascertaining their solutions is introduced and the whole system is set to . work. Simulated structures include a f~ily of pinned struts of varying slenderness, and single-span steel portal frames. The method may be used at varying levels of detail, having the flexibility to make use of a selection of stress-strain relationships, and families of struts are tested under a number of these conditions. The results of these simulations are compared and the result best comparable to design code crushing strength is that which carries the most data: a full elastic-plastic-strain-hardening stress strain curve used in simulations which consider the impact of bending moments and thrusts through each cross-section, without neglecting the internal stresses of hotrolled steel sections. The portal frame computer models are an evolution of the strut simulations, providing a rigorous analysis of a sample frame as well as comparisons with existing design methods. Results from both series of structural model are discussed before future developments of the method and its application to enhanced simulations.
Supervisor: Not available Sponsor: Not available
Qualification Name: University of Southampton, 2007 Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.485516  DOI: Not available
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