主办：陕西省汽车工程学会
ISSN 1671-7988  CN 61-1394/TH
创刊：1976年
汽车实用技术

汽车实用技术 ›› 2024, Vol. 49 ›› Issue (23): 127-131.DOI: 10.16638/j.cnki.1671-7988.2024.023.026

• 工艺·材料 • 上一篇    

长纤增强 PP 铝塑仪表板横梁的开发

李志虎，李秋魁，贺丽丽，王旭昕，杨振环，顾前程   

  1. 合众新能源汽车股份有限公司
  • 发布日期:2024-12-05
  • 通讯作者: 李志虎
  • 作者简介:李志虎（1979－），男，硕士，高级工程师，研究方向为车用材料的应用和开发，E-mail:120702079@qq.com

Development of Long Fiber Reinforced PP on Aluminum-plastic Dashboard Cross Beam

LI Zhihu, LI Qiukui, HE Lili, WANG Xuxin, YANG Zhenhuan, GU Qiancheng   

  1. Hozon New Energy Automobile Company Limited
  • Published:2024-12-05
  • Contact: LI Zhihu,

PDF

摘要： 目前汽车仪表板横梁总成主要采用钢管及钣金焊接而成。为开发一款低成本的轻量化 仪表板横梁，文章提出采用长纤增强聚丙烯（PP）的铝塑混合结构，发现虽然较 PA-GF60 而 言，PP-LGF40 绝对拉伸强度和弹性模量较低，但比强度和比模量相当。通过增加壁厚、加强 筋、结构的拓扑优和 MOLDFLOW 的工艺分析，文章开发的 PP-LGF40 铝塑仪表板横梁，不 仅性能满足要求，还减重 40%左右，为铝塑混合结构零部件的开发提供了参考和实践指导意 义。

关键词: 长纤增强 PP；仪表板横梁；汽车横梁；轻量化；铝塑混合结构

Abstract: At present, the car cross beam assembly is mainly welded with steel pipes and sheet metal. To develop a low-cost lightweight dashboard cross beam, the article proposes aluminum-plastic hybrid structure which used by long fiber reinforced Polypropylene. It is found that although PP-LGF40 had lower absolute tensile strength and elastic modulus compared to PA-GF60, but its specific strength and specific modulus are comparable. By increasing wall thickness, strengthening ribs, optimizing the topology of the structure etc, the final PP-LGF40 aluminum-plastic car cross beam has been developed which not only meet the performance requirements but also reduce weight by about 40%. This article provides reference and practical guidance for the development of aluminum-plastic hybrid structural components.

Key words: ong fiber reinforced PP; dashboard cross beam; car cross beam; light weight; aluminumplastic hybrid structure