工艺与制造英文2025
基于最优压力范围的自动纤维铺放工艺中铺放力的修正与控制
Correction and control of lay-up force in automated fiber placement based on optimal pressure range
Liang Cheng, Xiaokang Xu, Chenggan Zheng, Jiangxiong Li, Yinglin Ke · Zhejiang University
摘要整理
自动纤维铺放（AFP）技术已成为航空航天应用中制造轻质、高强度碳纤维增强复合材料（CFRP）结构的关键工艺。精确控制工艺参数，特别是铺放力，对实现高质量纤维铺放和优化力学性能至关重要。然而，由于柔性压辊与不规则模具表面之间的复杂相互作用，理解铺放过程中的压力分布存在挑战。本研究建立了压辊与层板的本构模型，分析了压辊与模具的接触行为。通过连续调整铺放力，使接触中心压力维持在最优压力范围（OPR）内。为实现实时控制，分析了压辊气缸的动态特性，通过调节输入气压实现了铺放力的滑模控制。实验结果表明该方法的有效性，压力波动残差降低了67.92%。调整后的铺放力在整个AFP工艺过程中保持压力一致，与采用恒定铺放力相比，显著降低了缺陷风险。
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