中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2019, Vol. 38 ›› Issue (07): 114-118.DOI: 10.3969/j.issn.1674-0696.2019.07.19

• 载运工具与机电工程 • 上一篇    下一篇

基于概念特征模型的轿车白车身模态优化

张宇1曹友强2   

  1. (1. 重庆电子工程职业学院 汽车工程学院,重庆 401331; 2. 吉利汽车研究总院,浙江 宁波 3153363)
  • 收稿日期:2018-03-26 修回日期:2018-06-29 出版日期:2019-07-02 发布日期:2019-07-02
  • 作者简介:张宇(1985—),男,重庆人,工程师,硕士,主要从事汽车NVH性能开发方面的研究。E-mail: yzhang1068@163.com。
  • 基金资助:
    重庆市教委科研项目(KJ1729402);重庆电子工程职业学院校级科研资助项目(XJZK201710)

Modal Optimization of BIW Based on Concept Feature Model

ZHANG Yu1, CAO Youqiang2   

  1. (1. School of Automotive Engineering, Chongqing Electronic Engineering Vocational College, Chongqing 401331, P. R. China; 2. Geely Automobile Research Institute, Ningbo 3153363, Zhejiang, P. R. China)
  • Received:2018-03-26 Revised:2018-06-29 Online:2019-07-02 Published:2019-07-02

摘要: 首先,运用车身接头单元结构力学性能,研究了接头概念模型建模方法,并建立了高精度的白车身概念特征模型。接着,基于白车身概念特征模型分析计算了主要梁结构灵敏度和接头灵敏度,以此为指标识别了车身弯扭模态敏感区域,并提出模态优化指导措施。最后,将模态优化措施移植于白车身实车模型。计算验证结果表明,白车身弯扭模态频率得到优化。利用概念特征模型,形成一套完整的白车身模态优化流程,大大提高白车身NVH性能开发效率,是一种便捷而有效的车身结构优化方法。

关键词: 车辆工程, 白车身, 概念特征模型, NVH性能

Abstract: First of all, using the mechanical properties of the body joint unit, the modeling method of the joint conceptual model was studied, and the high-precision BIW concept feature model was established. Then, the sensitivity of main beams and joints was analyzed and calculated based on the BIW concept feature model. The sensitive area of bending and torsion modes of BIW was identified as an index, and the modal optimization guidance was proposed. Finally, the modal optimization measures were transplanted to the real car model of BIW. The calculation and verification results show that the bending and torsion modal frequencies of BIW are optimized. It is a convenient and effective method to optimize the BIW structure by using the conceptual feature model to form a complete set of modal optimization process of BIW, which greatly improves the efficiency of NVH performance development of BIW.

Key words: vehicle engineering, BIW (body-in white), concept feature model, NVH properties

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