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中南大学学报(自然科学版)

Journal of Central South University

第51卷    第9期    总第313期    2020年9月

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文章编号:1672-7207(2020)09-2422-08
编织纤维金属层板成形性能及充液成形工艺分析
李磊1,郎利辉1,HAMZA Blala1,王洪锋2,曹兴龙2

(1. 北京航空航天大学 机械工程及自动化学院,北京,100191;
2. 中国人民解放军93175部队,吉林 长春,130000
)

摘 要: 为了解半固化工艺下不同编织方式的纤维金属层板力学及成形性能,进一步优化半固化纤维金属层板充液成形工艺,通过拉伸试验,对半固化、固化工艺下不同铺层角度的平纹和破斜纹编织纤维金属层板进行力学性能测试,并通过充液成形试验验证工艺的可行性。研究结果表明:半固化工艺可以使编织纤维金属层板在与纤维成45°方向上具有最佳的成形性能,而在0°方向上成形性能提升有限。固化后的编织纤维金属层板具有更高的强度,半固化纤维金属层板的最优压边间隙选用与纤维金属层板板厚一致较为合理,这可能是由于中间层预浸料弹性性质原因。当压边间隙为1.2 mm,液室压力为10 MPa时,可以得到无缺陷的筒形件。

 

关键词: 编织纤维金属层板;充液成形;拉伸性能;压边间隙;液室压力;可行性分析

Analysis of forming properties and hydroforming process of braided fiber metal laminates
LI Lei1, LANG Lihui1, HAMZA Blala1, WANG Hongfeng2, CAO Xinglong2

1. School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China;
2. Unit 93175, People''s Liberation Army, Changchun 130000, China

Abstract:In order to understand the mechanics and forming properties of fiber metal laminates (FMLs) with different weaving pattern fiber during semi-cured process, and further optimize the hydroforming process of semi-cured FMLs, the mechanical properties of plain and twill braided FMLs with different layer angles during semi-cured and cured processes were tested through tensile tests. The feasibility was verified by the hydroforming experiment. The results show that the semi-cured process can make different braided FMLs to have better formability in the 45° direction with the fiber, while the formability in the 0° direction is limited. And the cured laminates have higher strength. It is reasonable to choose the optimal blank-holding clearance of the semi-cured process consistent with the same thickness of the FMLs, which may be due to the elastic nature of the intermediate layer prepreg. When the blank holder clearance is 1.2 mm and the cavity pressure is 10 MPa, the non-defective cup parts can be obtained during the semi-cured process.

 

Key words: braided fiber metal laminate; hydroforming; tensile test; blank-holder clearance; cavity pressure; feasibility analysis

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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