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Title: Concurrent design of product-material systems using multilevel optimization
Authors: Acar, Erdem
Rais-Rohani, Masoud
Najafi, A.
Marin, E.
Bammann, D.
Issue Date: 2009
Publisher: American Institute of Aeronautics and Astronautics Inc.
Abstract: In traditional structural optimization, the geometric properties of the product are optimized for a specific set of material properties. This paper seeks to extend the domain of product optimization to also include the material modeling parameters by treating the product and material as a hierarchical multilevel system that can be decomposed and solved using the analytical target cascading (ATC) method. Two material models are considered here. The low-fidelity model is based on a simple elastic-plastic constitutive law with linear hardening whereas the high-fidelity model is based on an internal-state-variable representation that is influenced by the microstructural features of the material. The ATC method is applied to product-material design optimization of a multi-cell, thin-walled tube for impact energy absorption and durability. The integrated product-material optimization problem is solved using both single and multilevel approaches with results compared. © 2009 by E. Acar and M. Rais-Rohani.
ISBN: 9781563479731
ISSN: 0273-4508
Appears in Collections:Makine Mühendisliği Bölümü / Department of Mechanical Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

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