热塑性PA6碳纤维/铝基纤维金属层板温热胀形性能及失效行为研究

doi:10.3901/JME.2025.04.116

机械工程学报 ›› 2025, Vol. 61 ›› Issue (4): 116-126.doi: 10.3901/JME.2025.04.116

• 材料科学与工程 • 上一篇

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热塑性PA6碳纤维/铝基纤维金属层板温热胀形性能及失效行为研究

盈亮¹, 陈智刚², 戴明华¹, 王大恩², 胡平², 韩小强¹

1. 大连理工大学机械工程学院大连 116024;
2. 大连理工大学汽车工程学院大连 116024

收稿日期:2024-03-10 修回日期:2024-10-11 发布日期:2025-04-14
作者简介:盈亮(通信作者)，男，1983年出生，博士，副教授。主要研究方向为汽车车身轻质金属/复材一体化温热成形制造技术等。E-mail：yingliang@dlut.edu.cn
陈智刚，男，1995年出生，硕士研究生。主要研究方向为汽车轻量化。E-mail：zhigangchen2020@mail.dlut.edu.cn
基金资助:
国家自然科学基金(52375310)和中央高校基本科研业务费(DUT21JC41)资助项目。

Investigation on Bulging Formability and Failure Behavior of Thermoplastic PA6 Carbon Fiber/AL Fiber Metal Laminates during Warm Forming

YING Liang¹, CHEN Zhigang², DAI Minghua¹, WANG Daen², HU Ping², HAN Xiaoqiang¹

1. School of Mechanical Engineering, Dalian University of Technology, Dalian 116024;
2. School of Automotive Engineering, Dalian University of Technology, Dalian 116024

Received:2024-03-10 Revised:2024-10-11 Published:2025-04-14

摘要/Abstract

摘要： 以热塑性PA6基连续单向碳纤维/铝基纤维金属层板(Carbon fiber reinforced thermoplastic/AL, CFRTP/AL)为研究对象，基于单拉和三点弯曲试验研究四种铺层结构CFRTP/AL的基础力学性能，对比分析该类纤维金属层板(Fiber metal laminates, FMLs)在常温及高温下(25 ℃、240 ℃)下NAKAJIMA温热胀形性能及其大变形损伤失效行为。进一步基于ABAQUS开发一种非连续微剪切等效建模策略，实现对CFRTP/AL温热胀形及其损伤失效行为的有效预测。试验结果表明：正交铺层结构CFRTP/AL的温热成形性能优于其他FMLs铺层结构。常温下CFRTP/AL成形性能不佳，但异质材料界面连接质量较好，并未发生界面分层现象；通过提高成形温度，CFRTP/AL的成形性能得到提升，其表层金属的损伤失效要晚于芯部的复合材料层，但异质材料层间协同变形能力较差。采用非连续微剪切等效建模策略，可以获得准确的CFRTP/AL的面内应变场分布，并实现对其整体损伤失效行为的有效预测。

关键词: 热塑性碳纤维, 纤维金属层板, 温热成形, 胀形性能, 损伤预测

Abstract: With the thermoplastic PA6 based continuous carbon fibre reinforced aluminium laminates(CFRTP/AL) as the research object, the basic mechanical properties of four different fibre metal laminates(CFRTP/AL) are studied based on uniaxial tension and three-point bending tests. The hot NAKAJIMA bulging properties and large deformation damage failure behaviour of FMLs at room temperature and high temperature (25 ℃, 240 ℃) are compared investigated. Furthermore, an equivalent modelling strategy of discontinuous micro shearing is further adopted on the basis of ABAQUS to effectively simulate the bulging and damage failure behaviours of this CFRTP/AL in warm forming process. The results show that the warm formability of orthogonal-ply structure CFRTP/AL is superior to other FMLs. The formability of CFRTP/AL at room temperature is poor whereas its interface connection quality of heterogeneous materials is excellent, and no interface delamination happens. By increasing the forming temperature, the formability of CFRTP/AL is improved. The damage failure of the surface metal is later than that of the core composite layer, and the cooperative deformation ability of the heterogeneous material layers is inferior. In addition, effective strain field distribution of CFRTP/AL within its hybrid material layers can be obtained by using discontinuous micro shear equivalent modeling strategy, and valid prediction of overall damage failure behaviour can be achieved.

Key words: thermoplastic carbon fiber, fiber metal laminate, warm forming, bulging formability, damage prediction

中图分类号:

TB333
U465

盈亮, 陈智刚, 戴明华, 王大恩, 胡平, 韩小强. 热塑性PA6碳纤维/铝基纤维金属层板温热胀形性能及失效行为研究[J]. 机械工程学报, 2025, 61(4): 116-126.

YING Liang, CHEN Zhigang, DAI Minghua, WANG Daen, HU Ping, HAN Xiaoqiang. Investigation on Bulging Formability and Failure Behavior of Thermoplastic PA6 Carbon Fiber/AL Fiber Metal Laminates during Warm Forming[J]. Journal of Mechanical Engineering, 2025, 61(4): 116-126.

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热塑性PA6碳纤维/铝基纤维金属层板温热胀形性能及失效行为研究

Investigation on Bulging Formability and Failure Behavior of Thermoplastic PA6 Carbon Fiber/AL Fiber Metal Laminates during Warm Forming

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