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Design Science Journal
Papers

Robust design proposal by the use of structural topology optimization considering uncertainties of input parameters and boundary conditions

Robust design proposal by the use of structural topology optimization considering uncertainties of input parameters and boundary conditions

Year: 2013

Editor: Udo Lindemann, Srinivasan V, Yong Se Kim, Sang Won Lee, John Clarkson, Gaetano Cascini

Author: Stangl, Thomas; Walter, Michael; Wartzack, Sandro; Schneyer, Thomas

Series: ICED

Institution: Chair of Engineering Design, Friedrich-Alexander-University Erlangen-Nuremberg, Germany

Pages: 217-226

ISBN: 978-1-904670-52-0

ISSN: 2220-4334

Abstract

Specifying a product’s optimal mechanical and functional design primary depends on the requirements defined by the future operating conditions. In today’s product design process the usage of topology optimization is a widely applied computer aided method to define an optimal design considering these requirements. However, in an early design stage, input parameters for this structural optimization process (e.g., operation conditions) are usually uncertain. Consequently, the resulting design is not optimal.

This paper focuses on a detailed investigation of uncertainties in structural topology optimization. Hence, the different kinds of uncertainties and their effects on the resulting designs are considered in detail. Furthermore, a methodology is presented, which enables the consideration of uncertainties using e.g., a statistical investigation of the topology optimization results and a sensitivity analysis-based result visualization. Therefore, a cam drive rocker arm of a combustion engine is analyzed in a case study. Finally, several recommendations are derived, supporting the product developer to define a robust initial design, causing less computational and time expense.

Keywords: Uncertainty in topology optimization, early functional validation, robust design, optimisation, design engineering

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ds conferenceICED13: 19th International Conference on Engineering Design

ICED13: 19th International Conference on Engineering DesignThe 19th International Conference on Engineering Deisgn (ICED13) will for the first time take place in Asia: ICED13 on 19-22 August 2013 at Sungkyunkwan University, Seoul, Korea The ICED13 motto is: "Design for Harmonies" - Harmony of Products and Services - Harmony of Old and New - Harmony of Culture and Technology - Harmony of East and West The conference chair is Prof. Yong Se Kim of the Creative Design Institute at Sungkyunkwan University. Important dates are: Call for Papers:...

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