中国塑料2024，Vol.38Issue(4)：73-78,6.DOI:10.19491/j.issn.1001-9278.2024.04.012
连续碳纤增强B柱加强板结构设计与铺覆仿真
Structural design and overlay simulation of continuous carbon-fiber-reinforced B-pillar reinforced plate
摘要
Abstract
At present,the composites with short or long fibers as reinforcement have been widely used in automotive non-load-bearing parts.If the composites need to be further developed for the application in automotive main or secondary load-bearing parts,it is necessary to use continuous carbon fiber to improve their product strength and stiffness.Howev-er,in the forming process of continuous fiber-reinforced composites,the small elongation at break of carbon fiber makes it easy to cause molding defects such as fiber fracture,wrinkling,and tearing in the position of the large curvature.To solve this problem,the influence of the starting point and initial orientation of fiber laying on the overlay effect was ana-lyzed theoretically through the simulation method of continuous fiber-reinforced composite laying with mold.To reduce fiber forming defects,the structural and overlay optimization design of continuous carbon-fiber reinforced B-pillar rein-forced plate were carried out,and the geometry of B-pillar reinforced plate and the method of laying prepreg for the hot-pressing process were determined.Through the optimization of segmented overlay,the proportion of the unqualified lay-er at 0 °,90 °,45 °,and-45 ° was reduced from 45.18%,52.83%,72.21%,and 71.78%to 2.47%,3.45%,5.31%,and 4.77%,respectively.This indicated that the segmented overlay could effectively improve the lamination performance of the continuous carbon fiber.Based on the optimized overlay design,the B-pillar reinforced plate that meets the performance requirements has been successfully trial produced.关键词
B柱加强板/连续纤维/结构优化/铺覆仿真/复合材料Key words
B-pillar reinforced plate/continuous fiber/structure optimization/overlaying simulation/composite分类
化学化工引用本文复制引用
姜曙,王阳,翟孟雷,李庆涛,黄明,刘春太..连续碳纤增强B柱加强板结构设计与铺覆仿真[J].中国塑料,2024,38(4):73-78,6.基金项目
国家重点研发计划"变革性技术关键科学问题"重点专项(2019YFA0706802) （2019YFA0706802）
深圳市科技计划(CJGJZD20210408092602006) （CJGJZD20210408092602006）
