GLARE层板液压胀形成形极限研究  

Research on Forming Limits of GLARE Based on Hydro-bulging Test

作　　者：张猛 李书磊 李晓星[2] 邹正平[1] 李勇[2] Zhang Meng;Li Shulei;Li Xiaoxing;Zou Zhengping;Li Yong(School of Energy and Power Engineering,Beihang University,Beijing 100191;School of Mechanical Engineering and Automation,Beihang University,Beijing 100191;Chinalco Materials Application Research Institute Co.,Ltd.,Beijing 102209)

机构地区：[1]北京航空航天大学能源与动力工程学院,北京100191 [2]北京航空航天大学机械工程及自动化学院,北京100191 [3]中铝材料应用研究院有限公司,北京102209

出　　处：《航天制造技术》2024年第4期69-74,共6页Aerospace Manufacturing Technology

基　　金：国家自然基金项目(516***29)。

摘　　要：纤维增强金属层板(FMLs)凭借其卓越的力学性能在众多领域中得到了广泛应用,成为当今研究的焦点。为解决未固化层板成形性及破裂形式不清晰的问题,本研究采用液压胀形试验,探讨了在不同边界条件下GLARE层板的成形极限。首先,借助理论方法建立了胀形顶点区域各组分材料受力表达式,并讨论了层间摩擦对成形极限的影响。其次,通过液压胀形试验分析了流体压力作用下纤维增强金属层板的失效形式,并建立了典型成形极限曲线图。最后,借助有限元仿真对上述试验进行了复现,研究结果表明,层间摩擦的增加显著降低了纤维增强金属层板的成形性,与理论分析及实验数据一致。该成形极限图不仅可以对成形效果进行评估,也为工艺参数优化提供参考依据。Owing to their superior mechanical properties,Fiber Metal Laminates(FMLs)have garnered widespread application across various domains,emerging as a focal point in current research.To quantitatively the formability of FMLs,the hydro-bulging test under varied boundary conditions was employed.Firstly,a theoretical analysis of the stress status in the polar regions was conducted,delving into the influence of inter-layer friction on formability.Subsequently,the failure model of GLARE after the hydro-bulging test was identified and the typical Forming Limit Curve(FLC)was established by measuring the major strain and strain ratio.Finally,the finite element simulation method was used to reproduce the above test,and the results showed that the inter-layer friction significantly negatively influenced the FLC,which was consistent with the theoretical and experimental results.The derived FLC for GLARE not only assessed formability but also served as a crucial reference for optimizing process parameters.

关 键 词：液压胀形 纤维增强金属层板 成形极限曲线 

分 类 号：V229.7[航空宇航科学与技术—飞行器设计]