A Survey of Structural Optimization in Mechanical Product Development

[+] Author and Article Information
Kazuhiro Saitou1

Department of Mechanical Engineering,  University of Michigan, Ann Arbor, Michigan

Kazuhiro Izui, Shinji Nishiwaki

Department of Aeronautics and Astronautics,  Kyoto University, Kyoto, Japan

Panos Papalambros

Department of Mechanical Engineering,  University of Michigan, Ann Arbor, Michigan


Corresponding author.

J. Comput. Inf. Sci. Eng 5(3), 214-226 (Sep 01, 2005) (13 pages) doi:10.1115/1.2013290 History:

The widespread availability of affordable high-performance personal computers and commercial software has prompted the integration of structural analyses with numerical optimization, reducing the need for design iterations by human designers. Despite its acceptance as a design tool, however, structural optimization seems yet to gain mainstream popularity in industry. To remedy this situation, this paper reviews past literatures on structural optimization with emphasis on their relation to mechanical product development, and discusses open research issues that would further enhance the industry acceptance of structural optimization. The past literatures are categorized based on their major research focuses: geometry parameterization, approximation methods, optimization algorithms, and the integration with nonstructural issues. Open problems in each category and anticipated future trends briefly are discussed.

Copyright © 2005 by American Society of Mechanical Engineers
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Figure 1

Types of geometry parameterization: (a) sizing, (b) shape, and (c) topology (5)

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Figure 2

Two approaches for structural topology optimization. (a) Discrete element (ground structure), and (b) continuum.

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Figure 3

3D topology optimization with frame and panel elements (64). (a) Design domain, and (b) optimal panel configuration.

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Figure 4

(a) Finite element, (b) lumped parameter, and (c) equivalent mechanism models of a vehicle front subframe (153)

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Figure 5

Equiavlent mechanism model of vehicle front half-body (155). Boxlike outlines are shown only to provide a visual clue to human designers.

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Figure 6

Optimization result of cross-sectional shape of automotive body frame using genetic algorithm (192)

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Figure 7

Pareto-optimal multicomponent topologies of a simplified automotive floor frame subject to multiple loading conditions, considering stiffness, manufacturability, and assembleability (236)

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Figure 8

(a) Automotive space frame optimally decomposed for overall stiffness, component manufacturability, and the adjustability of dimensions K1–K5 during assembly process, and (b) the corresponding assembly sequence to realize the adjustability (237)

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Figure 9

Number of conference and journal papers (written in English) in Compendex between 1980 and 2004 with classification code 6* and containing “structural optimization” and “product development” in subject, title, or abstract



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