NDLI: An Approach for Uni-Level Reliability Based Design Optimization Using Cross-Entropy Method

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Kanakasabai, Pugazhendhi Anoop, K. Dhingra
Copyright Year	2012
Abstract	In this paper a novel approach is proposed to solve the reliability based design optimization (RBDO) problem, which is translated into a single-level problem using Karush-Kuhn-Tucker (KKT) conditions. The transformation of a bi-level RBDO problem into a single-level problem using KKT conditions introduces several equality constraints in the single-level problem definition. Presence of multiple equality constraints poses numerical difficulty to the gradient based optimizers, hence a robust algorithm to solve the single-level RBDO problem is proposed in this paper using an alternative approach. The proposed approach uses an exterior penalty based cross-entropy (CE) method to solve the uni-level RBDO problem. This approach is shown to be robust in handling equality constraints. The three example problems solved in this paper also shows that the algorithm works well with different starting points used for the design variables.
Sponsorship	Design Engineering Division Computers and Information in Engineering Division
Starting Page	1271
Ending Page	1279
Page Count	9
File Format	PDF
ISBN	9780791845028
DOI	10.1115/DETC2012-70691
Volume Number	Volume 3: 38th Design Automation Conference, Parts A and B
Conference Proceedings	ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
Language	English
Publisher Date	2012-08-12
Publisher Place	Chicago, Illinois, USA
Access Restriction	Subscribed
Subject Keyword	Uni-level approach Reliability based design optimization Cross-entropy Exterior penalty method Karush-kuhn-tucker conditions Reliability-based optimization Entropy
Content Type	Text
Resource Type	Article

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