|Table of Contents|

Modal analysis of the impeller based on 3D-SLDV and high speed 3D-DIC technology(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2024年02期
Page:
107-112
Research Field:
目次
Publishing date:

Info

Title:
Modal analysis of the impeller based on 3D-SLDV and high speed 3D-DIC technology
Author(s):
YAN Song1; 2;  ZHANG Zhiwei1; 2
1.National Key Laboratory of Aerospace Liquid Propulsion, Xi'an 710100, China; 2.Xi'an Aerospace Propulsion Institute, Xi'an 710100, China
Keywords:
liquid rocket engines;  3D-SLDV;  high-speed 3D-DIC;  impeller;  operational deflection shape
PACS:
V434
DOI:
10.3969/j.issn.1672-9374.2024.02.011
Abstract:
The full-field mode shape is important for studying the structural dynamic characteristics of the engine structure. The test principles of two full-field vibration test methods based on 3D-SLDV and high-speed 3D-DIC are introduced. Taking the impeller of liquid rocket engines as an example, the natural frequency and mode shape of the impeller within 5 kHz are obtained by using two technologies respectively, and the advantages and disadvantages of the two test methods are compared and analyzed. Compared with 3D-DIC, the displacement noise floor of 3D-SLDV technology is lower, which is more beneficial to the identification of high-frequency mode shapes, but this method belongs to the point-by-point scanning test, and the test time is long. 3D-DIC technology collects the full-field data simultaneously, its acquisition time is short, and it has a more refined mode shape. However, the amount of image data is large, and it takes a long time to download and analyze the data. At the same time, this displacement-based measurement method cannot identify the displacement below the noise floor.

References:

[1] 李斌, 闫松, 杨宝锋, 大推力液体火箭发动机结构中的力学问题[J]. 力学进展,2021, 51(4): 831-864.
LI B, YAN S, YANG B F. Mechanical problems of the large thrust liquid rocket engine[J]. Advances in Mechanics, 2021, 51(4): 831-864.
[2]杜大华, 黄道琼, 黄金平, 等. 火箭发动机涡轮盘模态影响因素与振动安全性分析[J]. 火箭推进, 2021, 47(1): 21-28.
DU D H, HUANG D Q, HUANG J P, et al. Analysis on modal influence factors and vibration safety of rocket engine turbine disk[J]. Journal of Rocket Propulsion, 2021, 47(1): 21-28.
[3]VAN DER AUWERAER H, STEINBICHLER H, VANLANDUIT S, et al. Application of stroboscopic and pulsed-laser electronic speckle pattern interferometry(ESPI)to modal analysis problems[J]. Measurement Science and Technology, 2002, 13(4): 451-463.
[4]LIU Y B, DAI X J, QI J K, et al. Vibration characteristics of pipe based on panoramic amplitude-fluctuation electronic speckle pattern interferometry[J]. Measurement, 2022, 202: 111802.
[5]STANBRIDGE A B, EWINS D J. Modal testing using a scanning laser Doppler vibrometer[J]. Mechanical Systems and Signal Processing, 1999, 13(2): 255-270.
[6]PETROV V, POGODA A,SEMENTIN V,et al.Advances in digital holographic interferometry[J]. Journal of Imaging, 2022, 8(7): 196.
[7]OLIVER D E, SCHUESSLER M. Fully automated robot-based 3-dimensional vibration measurement system for modal analysis and structural health monitoring[C]//IMAC-XXVII. Orlando, Florida:[s.n.], 2009.
[8]YAN S, LI B, LI F, et al. Finite element model updating of liquid rocket engine nozzle based on modal test results obtained from 3-D SLDV technique[J]. Aerospace Science and Technology, 2017, 69: 412-418.
[9]闫松, 李斌, 李斌潮, 等, 三维扫描测振技术在液体火箭发动机模态试验中的应用[J]. 宇航学报,2017, 38(1): 97-103.
YAN S, LI B, LI B C, et al. Application of 3-D scanning vibrometry technique in liquid rocket engine modal test[J]. Journal of Astronautics, 2017, 38(1): 97-103.
[10]BEBERNISS T J, EHRHARDT D A. High-speed 3D digital image correlation vibration measurement: recent advancements and noted limitations[J]. Mechanical Systems and Signal Processing, 2017, 86: 35-48.
[11]CHEN Z, ZHANG X M, FATIKOW S. 3D robust digital image correlation for vibration measurement[J]. Applied Optics, 2016, 55(7): 1641-1648.
[12]YANG R S, DING C X, YANG L Y, et al. Study of decoupled charge blasting based on high-speed digital image correlation method[J]. Tunnelling and Underground Space Technology, 2019, 83: 51-59.
[13]程月华, 吴昊, 薛一江, 等. 高速3D-DIC测试技术在装甲钢贯穿试验中的应用[J]. 爆炸与冲击, 2022, 42(10): 109-123.
CHENG Y H, WU H, XUE Y J, et al. Application of high-speed 3D-DIC measurement technology in perforation test of armor steel[J]. Explosion and Shock Waves, 2022, 42(10): 109-123.
[14]RIZO-PATRON S S, SIROHI J. Operational modal analysis of a rotating cantilever beam using high-speed digital image correlation[C]//57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. Reston, Virginia: AIAA, 2016.
[15]SCHMIDT T E, TYSON J, GALANULIS K, et al. Full-field dynamic deformation and strain measurements using high-speed digital cameras[C]//SPIE 5580.[S.l.]:[s.n.], 2005.
[16]TREBUNˇA F, HAGARA M. Experimental modal analysis performed by high-speed digital image correlation system[J]. Measurement, 2014, 50: 78-85.
[17]BEBERNISS T, EHRHARDT D A. Temporal aliasing in high-speed 3-dimensional digital image correlation vibration measurement[C]//56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. Reston, Virginia: AIAA, 2015.
[18]EHRHARDT D A, ALLEN M S, YANG S F, et al. Full-field linear and nonlinear measurements using continuous-scan laser doppler vibrometry and high speed three-dimensional digital image correlation[J]. Mechanical Systems and Signal Processing, 2017, 86: 82-97.
[19]PAN B, WU D F, YU L P. Optimization of a three-dimensional digital image correlation system for deformation measurements in extreme environments[J]. Applied Optics, 2012, 51(19): 4409-4419.
[20]DI LORENZO E, LAVA P, BALCAEN R, et al. Full-field modal analysis using high-speed 3D digital image correlation[J]. Journal of Physics: Conference Series, 2018, 1149: 012007.

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