Journal ArticleDOI
Development of a multidisciplinary design optimization test simulator
TLDR
This paper describes the construct and applications of a test simulator, CASCADE (Complex Application Simulator for the Creation of Analytical Design Equations), that is capable of randomly generating and then converging a system of coupled analytical equations, of user-specified size.Abstract:
Many of the method development efforts in the field of multidisciplinary design optimization (MDO) attempt to simplify the design of a large, complex system by dividing the system into a series of smaller, simpler, and coupled subsystems. A representative and efficient means of determining the feasibility and robustness of MDO methods is crucial. This paper describes the construct and applications of a test simulator, CASCADE (Complex Application Simulator for the Creation of Analytical Design Equations), that is capable of randomly generating and then converging a system of coupled analytical equations, of user-specified size (Hulme and bloebaum 1996). CASCADE-generated systems can be used for test sequencing and system reduction strategies, convergence strategies, optimization techniques, MDO methods, and distributed computing techniques (via Parallel Virtual Machine), among others.read more
Citations
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Journal ArticleDOI
Multidisciplinary design optimization of dynamic engineering systems
TL;DR: In this paper, the use of multidisciplinary design optimization for dynamic system design is reviewed, associated challenges are identified, related efforts such as optimal control are discussed, and a vision for fully integrated design approaches is presented.
Journal ArticleDOI
Development of visual design steering as an aid in large-scale multidisciplinary design optimization. Part I: method development
TL;DR: It is demonstrated that Graph Morphing can effectively reduce the complexity and computational time associated with some optimization problems.
Proceedings ArticleDOI
Multidisciplinary design optimization of dynamic engineering systems
TL;DR: The use of MDO for dynamic system design is reviewed, associated challenges are identified, related efforts such as optimal control are discussed, and a vision for fully integrated design approaches is presented.
Journal ArticleDOI
Multi-Objective Pareto Concurrent Subspace Optimization for Multidisciplinary Design
TL;DR: The multi-objective Pareto concurrent subspace optimization method is proposed, in which each discipline has substantial control over its own objective function during the design process, while still ensuring responsibility for constraint satisfaction in coupled subspaces.
Journal ArticleDOI
A simulation-based comparison of multidisciplinary design optimization solution strategies using CASCADE
TL;DR: In this paper, the authors present a rigorous numerical comparison of these solution strategies over a wide variety of problem sizes and complexities, and present a heuristic which will govern the appropriateness of a given solution strategy for a given set of system characteristics.
References
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Proceedings ArticleDOI
MDO Test Suite at NASA Langley Research Center
TL;DR: A World-Wide-Web based test suite for collecting, distributing and maintaining the standard MDO test problems for evaluating and comparing the products of this research is proposed.
Journal ArticleDOI
Application of global sensitivity equations in multidisciplinary aircraft synthesis
TL;DR: In this paper, the applicability of the Global Sensitivity Equation (GSE) method in the multidisciplinary synthesis of aeronautical vehicles was investigated and the influence of efficient constraint representations, the choice of design variables, and design variable scaling on the conditioning of the system matrix was also investigated.