数字调查和多目标优化,以形成CFRP/Al自穿接头的质量
Feng Xiong1,2,3, Xuehou Yu1, Shuai Zhang4
1Joint International Research Laboratory of Intelligent Manufacturing & Control of Key Parts for Energy-Efficient & New Energy Vehicles, Ministry of Education, Chongqing University of Technology, Chongqing 400054, China.
Materials (Basel, Switzerland)
|March 27, 2025
概括
这项研究优化了碳纤维增强聚合物/合金接头的自我穿孔钉 (SPR). 一种新的策略显著改善了接头底厚度和互锁值,以提高多材料车辆车身的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 制造业 工程 制造工程
- 汽车工程 汽车工程
背景情况:
- 自穿钉 (SPR) 对于在多材料车辆车身中连接不同材料至关重要.
- SPR接头的成型质量,特别是碳纤维增强聚合物 (CFRP) /合金 (Al) 组合物,需要进一步研究.
- 联合表现受到质量形成的重大影响,需要对优化策略的研究.
研究的目的:
- 通过数值研究CFRP/Al SPR接头的成型质量.
- 提出和验证一个新的多目标优化战略,以提高联合成型质量.
- 通过优化SPR流程,提高多材料车体的连接性能.
主要方法:
- 建立并验证了用于CFRP/Al SPR联合成型的有限元 (FE) 模型.
- 使用FE模拟系统地研究了长度和模具参数 (深度,间隙,半径) 对形成质量指标 (底部厚度,互锁值) 的影响.
- 采用了一种混合的塔古奇技术,用于通过类似于理想解决方案 (TOPSIS) 的订单偏好方法来实现多目标优化.
主要成果:
- 这项研究揭示了长和模参数对关节成形特征的作用规律.
- 与基线设计相比,优化参数导致底部厚度增加10.18%,互锁值增加34.17%.
- 在CFRP/Al SPR接头的关键成型质量指标中取得了显著的改进.
结论:
- 拟议的多目标优化战略有效地提高了CFRP/Al SPR接头的成型质量.
- 这些发现提供了一种有效的方法来预测和改善汽车应用中的SPR接头质量.
- 优化的SPR接头有助于提高多材料车辆结构中的连接性能.
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