On the Optimal Control of Residual Stresses in High Temperature Materials

Abstract

When a material body changes temperature nonuniformally, stresses are induced due to nonhomogeneous straining and if these stresses exceed the plastic yield limit, a proportion of them may be "locked into" the material in the form of residlal stresses. In this paper we study the problem of controlling the temperature field, using point controllers on the boundary of the material, in order to minimize the residual stresses. The optimal selection of the control points is also considered.

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Authors/Creators:	Banks, S.P
Copyright, Publisher and Additional Information:	The Department of Automatic Control and Systems Engineering research reports offer a forum for the research output of the academic staff and research students of the Department at the University of Sheffield. Papers are reviewed for quality and presentation by a departmental editor. However, the contents and opinions expressed remain the responsibility of the authors. Some papers in the series may have been subsequently published elsewhere and you are advised to cite the later published version in these instances.
Keywords:	Optimal Control; Residual Stresses; Plastic Behaviour; Distributed Parameter Systems
Dates:	Published: March 1981
Institution:	The University of Sheffield
Academic Units:	The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Automatic Control and Systems Engineering (Sheffield) > ACSE Research Reports
Depositing User:	MRS ALISON THERESA BARNETT
Date Deposited:	19 Jul 2013 09:48
Last Modified:	25 Oct 2016 10:45
Status:	Published
Publisher:	Department of Control Engineering, University of Sheffield, Mappin Street, Sheffield
Series Name:	ACSE Report 149

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On the Optimal Control of Residual Stresses in High Temperature Materials

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