汽车工程 ›› 2024, Vol. 46 ›› Issue (1): 179-186.doi: 10.19562/j.chinasae.qcgc.2024.01.019

• 精选论文 • 上一篇    

精密铸铝件一体化设计及在车身轻量化中的应用

谷先广1,2,陈红林1,2(),俞陆新1,张代胜1,2   

  1. 1.合肥工业大学汽车与交通工程学院,合肥 230009
    2.合肥工业大学智能制造技术研究院,合肥 230051
  • 收稿日期:2023-04-15 修回日期:2023-06-25 出版日期:2024-01-25 发布日期:2024-01-23
  • 通讯作者: 陈红林 E-mail:1350955372@qq.com
  • 基金资助:
    安徽省科技重大专项项目(202203a05020029)

Integrated Design of Precision Aluminum Castings Parts and Its Application in Lightweight Vehicle Body

Xianguang Gu1,2,Honglin Chen1,2(),Luxin Yu1,Daisheng Zhang1,2   

  1. 1.School of Automotive and Transportation Engineering,Hefei University of Technology,Hefei  230009
    2.Intelligent Manufacturing Institute,Hefei University of Technology,Hefei  230051
  • Received:2023-04-15 Revised:2023-06-25 Online:2024-01-25 Published:2024-01-23
  • Contact: Honglin Chen E-mail:1350955372@qq.com

摘要:

铝合金一体化精密铸造技术是实现汽车轻量化的重要方式之一。本文首先采用轻质铝合金材料、熔模真空吸铸工艺以及拓扑优化对白车身前副车架及仪表板横梁进行“材料-工艺-结构”一体化设计;其次对比一体化铝合金结构件的质量、研发成本、研制周期,较原钢制件大幅度降低;最后对加装一体化精密铸铝件的白车身进行刚度与模态的有限元仿真分析及台架试验。结果表明,一体化设计后,前副车架及仪表板横梁分别轻量36.6%、30.8%,同时白车身性能均满足设计要求。

关键词: 精密铸造, 一体化设计, 轻量化, 仿真分析, 台架试验

Abstract:

The integrated precision casting technology of aluminum alloy is one of the important ways to achieve lightweight of automobiles. Firstly, lightweight aluminum alloy material, investment vacuum suction casting process, and topology optimization are adopted to carry out an integrated design of "material, process and structure" for the front subframe and dashboard crossbeam of the white body in this paper. Secondly, the weight, research and development cost, and development cycle of integrated aluminum alloy structural components are compared to the original steel components, which are significantly reduced. Finally, finite element simulation analysis and bench tests are conducted on the stiffness and modal of the white body with integrated precision cast aluminum parts. The results show that after the integrated design, the front subframe and dashboard crossbeam has reduced weight by 36.6% and 30.8% respectively, while the performance of the white body meets the design requirements.

Key words: precision casting, integrated design, lightweight, simulation analysis, bench test