• CN:11-2187/TH
  • ISSN:0577-6686

›› 2012, Vol. 48 ›› Issue (18): 44-54.

• 论文 • 上一篇    下一篇

轿车车身轻量化及其对连接技术的挑战

李永兵;李亚庭;楼铭;林忠钦   

  1. 上海交通大学机械系统与振动国家重点实验室;上海交通大学上海市数字化汽车车身工程重点实验室
  • 发布日期:2012-09-20

Lightweighting of Car Body and Its Challenges to Joining Technologies

LI Yongbing;LI Yating; LOU Ming;LIN Zhongqin   

  1. State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University Shanghai Key Laboratory of Digital Autobody Engineering, Shanghai Jiao Tong University
  • Published:2012-09-20

摘要: 2009年中国以300多万辆的优势,首次超越美国,成为世界汽车产销第一大国,比预计提前了5~6年。中国车市的优异表现,不仅有效拉动了中国本土汽车产业链的发展,也为经济危机条件下世界汽车工业做出巨大的贡献。然而,全球产销第一带来的不仅仅是欣喜,更多的则是压力。中国汽车工业在技术水平、创新能力、品牌影响力以及国际竞争力等方面与世界汽车强国还有明显的差距。与此同时,汽车工业也成为我国能源安全、低碳经济和城市环境的巨大负担,使其发展受到限制,转型迫在眉睫。汽车轻量化作为降低原油消耗和尾气排放的重要手段,已经得到世界各国的高度重视,成为世界汽车强国提高品牌竞争力的重要手段。对全球汽车车身轻量化的方法和发展趋势进行综述,分析车身轻量化技术的发展对焊接与连接的挑战,并对新型的车身连接技术进行分析和评价,以对我国轻量化车身的设计与制造提供有益借鉴。

关键词: 多材料复合, 焊接与连接, 汽车车身, 轻量化

Abstract: In 2009, China for the first time surpassed the U.S. with an advantage of three million cars as the world’s automobile production and sales superpower, five to six years earlier than expected. China’s automobile market’s outstanding performance, not only effectively stimulates China’s domestic automobile industry chain development, but also has made tremendous contributions to worldwide automotive industry during global economic crisis. However, the “first” bring not only joy, also more pressure to China. Compared with the world automotive powers, China’s auto industry is still weak in technical level, R&D innovation, brand influence and international competitiveness. At the same time, automotive industry has posed great pressure on China’s energy security, low carbon economy and a huge burden on the urban environment, which is restricting automotive industry’s development in turn. The transition is extremely urgent. As an important means to reduce oil consumption and exhaust emissions, automotive lightweighting has been attached great importance, and has become the important means for the world automobile power to improve their brand competitiveness. The means and trends of worldwide car body lightweighting are reviewed, the challenges of lightweight body to joining technologies are analyzed, and newest technologies proposed to meet the challenges are also reviewed. Hopefully this study will provide a useful reference to lightweight car body’s design and manufacturing in China.

Key words: Car body, Lightweight, Multi-material mix, Welding and joining

中图分类号: