| 基于参数化白车身下车体结构轻量化研究 |
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| 引用本文： | 吴杨,杨建森,武振江,曹建,王鹏,张俏.基于参数化白车身下车体结构轻量化研究[J].农业装备与车辆工程,2021(2):90-94. |
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| 作者姓名： | 吴杨 杨建森 武振江 曹建 王鹏 张俏 |
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| 作者单位： | 中汽研（天津）汽车工程研究院有限公司第三开发本部 |
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| 摘 要： | 在过往开发流程中,车身概念设计阶段,白车身性能得不到充分验证,若在概念设计阶段结合SFE进行车身优化,以仿真驱动设计,在白车身概念设计阶段就介入到车身性能评估,让车身在详细设计前就拥有比较好的弯扭刚度等性能。基于此,采用SFE-Concept建立了白车身概念设计阶段全参数化模型,通过筛选下车体结构更改地板下横梁,设计变量包含横梁厚度、横梁位置以及横梁截面形状3个维度,根据3个维度的变量进行试验设计(DOE),然后实现响应面近似模型的自动生成和验证。最终,采用序列二次规划法(SQP)进行优化,得到妥协解集,最终比较不同的解集,选取白车身质量最小的解作为优化解,优化后白车身下车体质量减轻3.64 kg。
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| 关 键 词： | 概念设计 弯扭刚度 试验设计 近似模型 序列二次规划法 |
Research on Lightweight Structure of Car Body Based on Parameterized Body-in-white |
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| Wu Yang,Yang Jiansen,Wu Zhenjiang,Cao Jian,Wang Peng,Zhang Qiao.Research on Lightweight Structure of Car Body Based on Parameterized Body-in-white[J].Agricultural Equipment & Vehicle Engineering,2021(2):90-94. |
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| Authors: | Wu Yang Yang Jiansen Wu Zhenjiang Cao Jian Wang Peng Zhang Qiao |
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| Institution: | (CATARC(Tianjin)Automotive Engineering Research Institute Co.,Ltd.,Tianjin 300300,China) |
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| Abstract: | In the past development process,the performance of BIW can not be fully verified in the conceptual design stage.If the car body is optimized in the conceptual design stage in combination with SFE to simulate and drive the design,the performance evaluation of BIW will be involved in the conceptual design stage,so that the car body has better bending and torsional stiffness before the detailed design.In this paper,SFE-Concept is used to build a full parametric model of BIW conceptual design stage.By selecting the structure of BIW to change the under floor crossbeam,the design variables include crossbeam thickness,crossbeam position and crossbeam section shape.According to the three dimensions,DOE is designed,and then the response surface approximate model is automatically generated and verified.Finally,the SQP is used to optimize and get the compromise solution set.Finally,different solution sets are compared.The solution with the lowest BIW mass is selected as the optimization solution.After optimization,the mass of the BIW body is reduced by 3.64 kg. |
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| Keywords: | conceptual design bending torsion stiffness design of experiment approximate model sequential quadratic programming |
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