Minimal Failure Probability for Ceramic Design Via Shape Control

Matthias Bolten (), Hanno Gottschalk () and Sebastian Schmitz ()
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Matthias Bolten: Bergische Universität Wuppertal
Hanno Gottschalk: Bergische Universität Wuppertal
Sebastian Schmitz: Università della Svizzera Italiana

Journal of Optimization Theory and Applications, 2015, vol. 166, issue 3, No 15, 983-1001

Abstract: Abstract We consider the probability of failure for components made of brittle materials under one time application of a load, as introduced by Weibull and Batdorf-Crosse. These models have been applied to the design of ceramic heat shields of space shuttles and to ceramic components of the combustion chamber in gas turbines, for example. In this paper, we introduce the probability of failure as an objective functional in shape optimization. We study the convexity and the lower semi-continuity properties of such objective functionals and prove the existence of optimal shapes in the class of shapes with a uniform cone property. We also shortly comment on shape derivatives and optimality conditions.

Keywords: Probabilistic failure of ceramic structures; Shape optimization; Optimal reliability; 49Q10; 60G55 (search for similar items in EconPapers)
Date: 2015
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Citations: View citations in EconPapers (1)

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DOI: 10.1007/s10957-014-0621-8

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