关于/CFRP层材的V形曲的实验和数值模拟研究
Hang Cheng1, Zhiqiang Zhang1, Mingwen Ren1
1Key Laboratory of Automobile Materials, Ministry of Education, School of Material Science and Engineering, Jilin University, Changchun 130022, China.
Materials (Basel, Switzerland)
|July 29, 2023
概括
这项研究优化了/碳纤维增强聚合物 (Al/CFRP) 层级材料生产,用于汽车轻量化. 45°的正极纤维布局和增加的金属厚度显著减少了曲弹,最大限度地减少了材料损坏.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 汽车工程 汽车工程
背景情况:
- 金属/CFRP层材对于汽车轻量化至关重要.
- 热压固化是这些复合材料的关键制造方法.
研究的目的:
- 为了优化热压固化条件的合金/CFRP层.
- 为了研究纤维铺设,成型速度和金属厚度对曲弹的影响.
- 在成型过程中分析损坏行为.
主要方法:
- 综合热压固化方法.
- 单环切割试验,以优化固化条件.
- V形曲试验和Abaqus有限元分析用于弹分析.
- 用Vumat子程序和显微镜分析进行损害评估的三维哈辛损害法.
主要成果:
- 最佳的固化条件:130°C45分钟.
- 45°的正极光纤铺设产生了最低的反弹率 (1.11%).
- 增加板材厚度 (2mm至3mm) 降低了43%,对于90°单向铺设.
- 形成速度对反弹的影响很小 (<1%的变化).
- 在45度的正极形布置中,纤维和树脂损伤最小.
结论:
- 纤维铺设和金属厚度是控制Al/CFRP层材中弹回应的关键参数.
- 这种45度的正向排列方式在减少反弹和损坏方面提供了卓越的性能.
- 这些发现为制造使用Al/CFRP层材的轻量级汽车零部件提供了宝贵的见解.
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