最新色国产精品精品视频,中文字幕日韩一区二区不卡,亚洲有码转帖,夜夜躁日日躁狠狠久久av,中国凸偷窥xxxx自由视频

+高級檢索
TC4鈦合金空心風(fēng)扇葉片面板成形缺陷的蠕變修復(fù)
DOI:
作者:
作者單位:

南京航空航天大學(xué),南京航空航天大學(xué) 機(jī)電學(xué)院,南京航空航天大學(xué) 機(jī)電學(xué)院,無錫透平葉片有限公司 國家能源大型渦輪葉片研發(fā)中心,南京航空航天大學(xué) 機(jī)電學(xué)院

作者簡介:

通訊作者:

中圖分類號:

V263.1

基金項(xiàng)目:

江蘇省科技支撐計(jì)劃


Creep repair of skin defects for the titanium TC4 wide-chord hollow fan blade
Author:
Affiliation:

College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics,College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics,College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics,Technology Centre, Wuxi Turbine Blade CO., LTD.,College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics

Fund Project:

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問統(tǒng)計(jì)
    • |
  • 參考文獻(xiàn)
    • |
  • 相似文獻(xiàn)
    • |
  • 引證文獻(xiàn)
    • |
  • 資源附件
    • |
  • 文章評論
    摘要:

    伴隨著國產(chǎn)民用大涵道比渦扇發(fā)動機(jī)的研制，目前對于大型鈦合金寬弦空心風(fēng)扇葉片成形技術(shù)的研究具有重要的意義。航空發(fā)動機(jī)用鈦合金寬弦空心風(fēng)扇葉片具有獨(dú)特的結(jié)構(gòu)特點(diǎn)，其外部為等厚面板，內(nèi)部減重空腔與加強(qiáng)筋交替排列，成形中當(dāng)葉片承受彎扭變形作用時(shí)，其局部面板會發(fā)生失穩(wěn)產(chǎn)生凹陷，導(dǎo)致葉型超差。為了解決這一問題，提出了一種基于蠕變成形的鈦合金空心風(fēng)扇葉片面板修復(fù)方法，該方法采用氣壓加載，在較高的溫度下，使凹陷部位發(fā)生蠕變變形，恢復(fù)到理論外形。本文針對某型TC4鈦合金寬弦空心風(fēng)扇葉片試驗(yàn)件的面板氣脹蠕變修復(fù)進(jìn)行研究，對經(jīng)歷兩次熱循環(huán)的基體材料進(jìn)行了高溫蠕變拉伸試驗(yàn)，建立了蠕變模型，利用有限元軟件ABAQUS對面板蠕變過程進(jìn)行了數(shù)值模擬，考察了保壓壓力以及蠕變時(shí)間對于修復(fù)效果的影響，并選取了最佳的工藝參數(shù)進(jìn)行了實(shí)驗(yàn)。結(jié)果表明，運(yùn)用氣壓加載蠕變修復(fù)工藝，能夠有效修復(fù)鈦合金空心風(fēng)扇葉片在彎扭預(yù)成形中產(chǎn)生的面板凹陷，可以作為輔助該類零件制造的一種有效方法。

    Abstract:

    With the development of domestic civil high bypass ratio turbofan engine, the research on the forming technology of large titanium wide-chord hollow fan blade has important significance currently. The titanium wide-chord hollow fan blade is characteristic by unique building structure. The surface skin is an equal-thickness shell. Inside the entity, weight-reduction chambers and reinforcement ribbons arranged alternatively. When the blade blank subjects to the torque movement during the forming process, instability occurs on the skin, inducing the appearance of local sinkage. In order to solve this problem, a creep method was proposed for the repairing of skin defects. The repairing work was performed by gas loading at elevated temperature. The creep test of base material experienced twice heat cycle was carried out and the creep formula was modeled. The numerical method was used to investigate the effects of different dwell pressure and time on the result. Based on the FEM result, the best set of parameters was selected and used to conduct the skin repairing experiment. The result shows that the gas loading creep repair method proves to be effective in repairing skin groove of the titanium TC4 wide-chord hollow fan blade. It can be used to assist the manufacture of this kind of component.

    參考文獻(xiàn)
    相似文獻(xiàn)
    引證文獻(xiàn)
引用本文

吳心晨,陳明和,謝蘭生,張鐵磊,胡智華. TC4鈦合金空心風(fēng)扇葉片面板成形缺陷的蠕變修復(fù)[J].稀有金屬材料與工程,2016,45(11):2942~2947.[WU Xin-chen, CHEN Ming-he, XIE Lan-sheng, ZHANG Tie-lei, HU Zhi-hua. Creep repair of skin defects for the titanium TC4 wide-chord hollow fan blade[J]. Rare Metal Materials and Engineering,2016,45(11):2942~2947.]
DOI：[doi]

復(fù)制
文章指標(biāo)
  • 點(diǎn)擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:2014-08-30
  • 最后修改日期:2014-11-14
  • 錄用日期:2014-12-25
  • 在線發(fā)布日期: 2016-12-08
  • 出版日期: