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• W2098062285 endingPage "1378" @default.
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• W2098062285 abstract "An automotive cross car beam supports instrument panels including the heating, ventilation and air-conditioning system, the knee airbags, the steering-column and steering-wheel system and the central console. Avoiding resonant frequencies and improving driving comfort are major performance requirements in the design of a cross car beam. Because of the nature of mass production in the automotive industry, the consideration of manufacturability is important, and the current practice in the industry does grant detailed information on the steering-column and steering-wheel system to the cross car beam designer. The objective of this paper is to perform a complete topology, size and shape optimization of a cross car beam by using a lightweight material, by considering two practical manufacturing processes (extrusion and casting) and by assuming a realistic situation where only limited information on the steering-column and steering-wheel system is available to the cross car beam designer. First, a simplified finite element model of the steering-column and steering-wheel system was developed, and it was calibrated using optimization such that the important behaviour of the simplified finite element model agrees with that of the real steering-column and steering-wheel system. Topology optimization was performed to determine the optimal material distribution for the parts that connect the steering-column and steering-wheel system and the cross car beam. Then a geometry reinterpretation of the favourable topology result was performed to address the concerns from the viewpoints of the cost and the manufacturability. A sensitivity study was conducted subsequently to determine the size optimization design variables with significant effects on the frequency performance. Finally, size and shape optimization were performed together to optimize further the details of the cross car beam structure. The weight of the optimal aluminium design was reduced by nearly 40% compared with the steel design while the important performance requirements are met." @default.
• W2098062285 created "2016-06-24" @default.
• W2098062285 creator A5003753200 @default.
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• W2098062285 date "2014-12-04" @default.
• W2098062285 modified "2023-09-23" @default.
• W2098062285 title "Topology, size and shape optimization of an automotive cross car beam" @default.
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• W2098062285 doi "https://doi.org/10.1177/0954407014561279" @default.
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