This paper proposes a system optimization method for product designs incorporating discrete design variables, in which hierarchical product optimization methodologies are constructed based on decomposition of characteristics and/or extraction of simpler characteristics from original characteristics. The method is constructed to take advantage of hierarchical optimization procedures, enabling the incorporation of discrete design variables. The proposed method can be applied to machine product designs that include discrete design variables such as material types, machining methods, standard material forms, and specifications. The optimizations begin at the lowest levels of the hierarchical optimization structure and proceed to the higher levels. Discrete design variables are efficiently selected and optimized in the form of small suboptimization problems at the lowest hierarchical levels, and optimum solutions for the entire problem are ultimately obtained using conventional mathematical programming methods. Practical optimization procedures for machine product optimization problems that include several types of discrete design variables are constructed, and applied examples are provided to demonstrate their effectiveness.
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e-mail: yoshimura@prec.kyoto-u.ac.jp
e-mail: yu.yoshimura@t02.mbox.media.kyoto-u.ac.jp
e-mail: izui@prec.kyoto-u.ac.jp
e-mail: shinji@prec.kyoto-u.ac.jp
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March 2009
Research Papers
Product Optimization Incorporating Discrete Design Variables Based on Decomposition of Performance Characteristics
Masataka Yoshimura,
Masataka Yoshimura
Professor, Fellow ASME
Department of Aeronautics and Astronautics, Mechanical Engineering Division, Graduate School of Engineering,
e-mail: yoshimura@prec.kyoto-u.ac.jp
Kyoto University
, Kyoto 606-8501, Japan
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Yu Yoshimura,
Yu Yoshimura
Graduate Student
Department of Aeronautics and Astronautics, Mechanical Engineering Division, Graduate School of Engineering,
e-mail: yu.yoshimura@t02.mbox.media.kyoto-u.ac.jp
Kyoto University
, Kyoto 606-8501, Japan
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Kazuhiro Izui,
Kazuhiro Izui
Assistant Professor
Department of Aeronautics and Astronautics, Mechanical Engineering Division, Graduate School of Engineering,
e-mail: izui@prec.kyoto-u.ac.jp
Kyoto University
, Kyoto 606-8501, Japan
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Shinji Nishiwaki
Shinji Nishiwaki
Associate Professor
Department of Aeronautics and Astronautics, Mechanical Engineering Division, Graduate School of Engineering,
e-mail: shinji@prec.kyoto-u.ac.jp
Kyoto University
, Kyoto 606-8501, Japan
Search for other works by this author on:
Masataka Yoshimura
Professor, Fellow ASME
Department of Aeronautics and Astronautics, Mechanical Engineering Division, Graduate School of Engineering,
Kyoto University
, Kyoto 606-8501, Japane-mail: yoshimura@prec.kyoto-u.ac.jp
Yu Yoshimura
Graduate Student
Department of Aeronautics and Astronautics, Mechanical Engineering Division, Graduate School of Engineering,
Kyoto University
, Kyoto 606-8501, Japane-mail: yu.yoshimura@t02.mbox.media.kyoto-u.ac.jp
Kazuhiro Izui
Assistant Professor
Department of Aeronautics and Astronautics, Mechanical Engineering Division, Graduate School of Engineering,
Kyoto University
, Kyoto 606-8501, Japane-mail: izui@prec.kyoto-u.ac.jp
Shinji Nishiwaki
Associate Professor
Department of Aeronautics and Astronautics, Mechanical Engineering Division, Graduate School of Engineering,
Kyoto University
, Kyoto 606-8501, Japane-mail: shinji@prec.kyoto-u.ac.jp
J. Mech. Des. Mar 2009, 131(3): 031004 (10 pages)
Published Online: February 2, 2009
Article history
Received:
May 2, 2007
Revised:
November 4, 2008
Published:
February 2, 2009
Citation
Yoshimura, M., Yoshimura, Y., Izui, K., and Nishiwaki, S. (February 2, 2009). "Product Optimization Incorporating Discrete Design Variables Based on Decomposition of Performance Characteristics." ASME. J. Mech. Des. March 2009; 131(3): 031004. https://doi.org/10.1115/1.3066577
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