Affiliation:
1. School of Systems and Enterprises, Stevens Institute of Technology, 1 Castle Point Terrace, Hoboken, NJ 07030
Abstract
Abstract
Multifidelity optimization leverages the fast run times of low-fidelity models with the accuracy of high-fidelity models (HFMs), in order to conserve computing resources while still reaching optimal solutions. This work focuses on the multifidelity multidisciplinary optimization of an aircraft system model with finite element analysis and computational fluid dynamics simulations in the loop. A two-step filtering method is used where a lower fidelity model is optimized, and then the solution is used as a starting point for a higher-fidelity optimization routine. By starting the high-fidelity routine at a nearly optimal region of the design space, the computing resources required for optimization are expected to decrease when using local algorithms. Results show that, when using surrogates for the lower fidelity models, the multifidelity workflows save statistically significant amounts of time over optimizing the original HFM alone. However, the impact on solution quality varies depending on the model behavior and optimization algorithm.
Subject
Computer Graphics and Computer-Aided Design,Computer Science Applications,Mechanical Engineering,Mechanics of Materials
Reference57 articles.
1. Review of Multi-fidelity Models;Fernández-Godino,2016
2. Design and Analysis of Computer Experiments in Multidisciplinary Design Optimization: A Review of How Far We Have Come-or Not;Simpson,2008
3. Survey of Multifidelity Methods in Uncertainty Propagation, Inference, and Optimization;Peherstorfer;SIAM Rev.,2018
4. Effects of Microstructural Variability on the Mechanical Properties of Ceramic Matrix Composites;Goldsmith,2011
5. Multidisciplinary Design Optimization for Hybrid Electric Vehicles: Component Sizing and Multi-fidelity Frontal Crashworthiness;Anselma;Struct. Multidiscipl. Optim.,2020
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