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車身結構概念設計系統(tǒng)多目標優(yōu)化模塊設計
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國家高技術研究發(fā)展計劃(863計劃)資助項目(2009AA04Z101);國家自然科學基金資助項目(10802018);遼寧省自然科學基金資助項目(20092153)


Design of Multi-objective Optimization Module in Vehicle Body Structure Concept Design System
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    摘要:

    為了避免汽車車身設計后期的反復修改,開發(fā)了車身結構概念設計系統(tǒng)(VCDICAE)的多目標優(yōu)化模塊,,設計了以車身結構剛度和模態(tài)為設計目標的多目標優(yōu)化算法,可實現在車身質量不增加的前提下提高車身總體結構性能,,從而為概念設計階段實現車身輕量化提供依據,,節(jié)約時間和成本。最后結合具體車型的概念設計過程,,對該車身進行了多目標優(yōu)化設計,,提高了該車身的彎曲剛度、扭轉剛度,、一階彎曲頻率和一階扭轉頻率,,驗證了多目標優(yōu)化模塊的有效性和正確性。

    Abstract:

    In order to avoid modifying vehicle body repeatedly in the later design stage, the multi-objective optimization module in vehicle concept design intelligent CAE system (VCD-ICAE) was developed. A multi-objective optimization algorithm was designed with the objectives of body structure stiffness and modal. The whole body structure performance could be improved on the premise that mass of body didn’t increase. The basis for realization of body lightweight in concept design stage was provided, so the time and cost were economized. Combining concept design process of a concrete body model, the multi-objective optimization was carried on. The bending stiffness, torsion stiffness, first bending frequency and first torsion frequency of body were increased. The validity and correctness of the proposed multi-objective optimization module was verified.

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劉寶越,侯文彬,張紅哲,胡平.車身結構概念設計系統(tǒng)多目標優(yōu)化模塊設計[J].農業(yè)機械學報,2011,42(4):17-21. Liu Baoyue, Hou Wenbin, Zhang Hongzhe, Hu Ping. Design of Multi-objective Optimization Module in Vehicle Body Structure Concept Design System[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(4):17-21.

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