钛合金蜂窝壁板楔形件静强度测试及失效模式分析

材料导报

2021, Vol. 35

Issue (Z1): 367-370

金属与金属基复合材料

钛合金蜂窝壁板楔形件静强度测试及失效模式分析

姚刚¹, 刘衍腾², 邓云华³, 续润洲³, 赵伟⁴

1 成都飞机工业(集团)有限责任公司,成都 610000
2 成都飞机设计研究所,成都 610000
3 中国航空制造技术研究院,北京 100024
4 西北工业大学航天学院,西安 710000

Experiment Study and Failure Mode Analysis on Static Strength of Titanium Honeycomb Sandwich Wedge Structure

YAO Gang¹, LIU Yanteng², DENG Yunhua³, XU Runzhou³, ZHAO Wei⁴

1 Chengdu Aircraft Industrial (Group) Co., Ltd, Chengdu 610000, China
2 Chengdu Aircraft Design and Research Institute, Chengdu 610000, China
3 AVIC Manufacturing Technology Institute, Beijing 100024, China
4 School of Astronautics, Northwestern Polytechnical University, Xi'an 710000, China

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摘要钛合金蜂窝壁板结构具有质量轻、比强度和比刚度高、消音、隔热、减振以及抗冲击等优异性能,在航空航天等领域广泛使用。本工作针对全高度钛合金蜂窝结构典型楔形件,开展了静强度和失效模式研究,并分析了两种典型缺陷对全高度钛合金蜂窝结构的承载能力及失效模式的影响。结果表明:(1) 在67%设计载荷(限制载荷)作用下,无缺陷、含单处缺陷和含两处缺陷的L向和W向钛合金蜂窝楔形试验件均未发生破坏,钛合金蜂窝结构承载能力较强。(2) 等效面积Φ45 mm的单处缺陷对钛合金蜂窝楔形试验件静强度和破坏模式影响较小。(3) 等效面积Φ30 mm的两处缺陷对钛合金蜂窝楔形试验件静强度影响显著,承载载荷下降明显,易发生板芯界面分离破坏。(4) L向无缺陷、含单处缺陷和含两处缺陷钛合金蜂窝楔形试验件的静强度破坏载荷均大于W向钛合金蜂窝楔形试验件对应结果,建议实际构件时采用蜂窝方向为L向的钛合金蜂窝结构形式。

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关键词: 钛合金蜂窝壁板结构钎焊界面缺陷力学性能

Abstract: Due to its light weightiness, high specific strength and stiffness, good sound-reduction and heat-resistance properties, titanium honeycomb sandwich structure has been widely used in aeronautical and aeronautical fields. Static strength and failure mode of full height titanium honeycomb sandwich structures were studied and the effect of typical defects on the static strength and failure mode were investigated in this study. Results show that all titanium honeycomb sandwich wedge structures with or without brazing defect were not fractured at limit load that is 67% design load, which indicates that titanium honeycomb sandwich structures have good load bearing capacity. Single defect with the equivalent area of Φ45 mm has less influence on the static strength and failure mode of titanium honeycomb sandwich structures. Two defects with the equi-valent area of Φ30 mm have significant influence on the static strength of titanium honeycomb sandwich structures. Load bearing capacity of tita-nium honeycomb sandwich structures is decreased notably and interface facture failure between face sheet and honeycomb core is easily occurred. Titanium honeycomb sandwich structure with L direction honeycomb core is suggested to the actual aircraft component due to the static strength of all titanium honeycomb sandwich wedge structures with L direction honeycomb core is larger than that with L direction honeycomb core.

Key words: titanium honeycomb sandwich structure brazing interface defect mechanical property

发布日期: 2021-07-16

ZTFLH:

V25

通讯作者: cdyaog@sina.com

作者简介: 姚刚,航空工业成飞公司工程师,学历本科。出生于1973年5月1日,籍贯四川省射洪市,就职于航空工业成飞公司钣钳加工厂。主要从事钛合金等薄壁材料的钣金成形与装配、高能电子束焊接、激光焊接、蜂窝钎焊、导管制造与连接等制造加工工艺的研究。在国家十一五期间立项的重点工程ARJ21飞机研制中参与研究了扁管模压弯曲成形关键工艺技术,技术成果处于国际领先水平。

引用本文:

姚刚, 刘衍腾, 邓云华, 续润洲, 赵伟. 钛合金蜂窝壁板楔形件静强度测试及失效模式分析[J]. 材料导报, 2021, 35(Z1): 367-370.
YAO Gang, LIU Yanteng, DENG Yunhua, XU Runzhou, ZHAO Wei. Experiment Study and Failure Mode Analysis on Static Strength of Titanium Honeycomb Sandwich Wedge Structure. Materials Reports, 2021, 35(Z1): 367-370.

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http://www.mater-rep.com/CN/ 或 http://www.mater-rep.com/CN/Y2021/V35/IZ1/367

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