振动疲劳载荷谱编制与试验验证

doi:10.7527/S1000-6893.2021.26585

Abstract

Abstract: Time-and frequency-domain methods are proposed to compile actual and accelerated vibration fatigue load spectrums by incorporating rain-flow counting algorithm, Fast Fourier Transform(FFT) and Miner rule. Comparative vibration fatigue tests(in axial and lateral direction) are conducted on two kinds of aeronautical metals under actual and accelerated time-and frequency-domain vibration fatigue load spectrums, demonstrating the practice and effective usage of compiling methods. After this, finite element model is generated to calculate the correlation between acceleration response and vibration loads of an aircraft horizontal tail, and the validity of finite element model is verified through modal analysis. Then, actual and accelerated vibration fatigue load spectrums of horizontal tail are compiled for full-scale vibration fatigue tests using the above compilation method. It is shown that the relative deviation between fatigue damage resulted from actual and accelerated vibration fatigue load spectrums is less than 5%, but accelerated efficiency is about 80%.

Key words: vibration fatigue, load spectrum, time-domain, frequency-domain, accelerated test

CLC Number:

V215.5⁺2

MAO Senxin, SHI Hanyang, LI Kaixiang, ZHANG Xiao, ZHU Yuntao, DU Juan, ZOU Kangzhuang, XIONG Junjiang. Vibration fatigue load spectrum compilation and test verification[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(7): 426585-426585.

References

[1] 柳文林,穆志韬,段成美.直升机振动与减振特性分析[J].海军航空工程学院学报, 2004, 19(5):533-536. LIU W L, MU Z T, DUAN C M. Research on vibration and vibration reduction characteristics of helicopter[J]. Journal of Naval Aeronautical Engineering Institute, 2004, 19(5):533-536(in Chinese).
[2] 姚起杭,姚军.工程结构的振动疲劳问题[J].应用力学学报, 2006, 23(1):12-15 YAO Q H, YAO J. Vibration fatigue in engineering structures[J]. Chinese Journal of Applied Mechanics, 2006, 23(1):12-15(in Chinese).
[3] DENTSORAS A J, KOUVARITAKIS E P. Effects of vibration frequency on fatigue crack propagation of a polymer at resonance[J]. Engineering Fracture Mechanics, 1995, 50(4):467-473.
[4] DAMIR A N, ELKHATIB A, NASSEF G. Prediction of fatigue life using modal analysis for grey and ductile cast iron[J]. International Journal of Fatigue, 2007, 29(3):499-507.
[5] 熊峻江,高镇同.高置信度的典型任务实测载荷谱最少观测次数[J].机械强度, 1996, 18(1):18-20. XIONG J J, GAO Z T. The method to determine the actual load spectrum of the representative task with the high confidence level[J]. Journal of Mechanical Strength, 1996, 18(1):18-20(in Chinese).
[6] 潘庆荣.飞续飞试验谱编制方法-"TWIST"方法中对数正态极值分布的实现[J].民用飞机设计与研究, 2004, 3:21-32. PAN Q R. Method of generating flight spectrum:Realization of logarithmic normal extreme value distribution in TWIST method[J]. Civil Aircraft Design and Research, 2004, 3:21-32(in Chinese).
[7] XIONG J J, SHENOI R A. A reliability-based data treatment system for actual load history[J]. Fatigue&Fracture of Engineering Materials&Structures, 2005, 28(10):875-889.
[8] KLEMENC J, FAJDIGA M. A neural network approach to the simulation of load histories by considering the influence of a sequence of rainflow load cycles[J]. International journal of fatigue, 2002, 24(11):1109-1125.
[9] 张基全.载荷谱的数据采集与处理技术[J].工程机械, 1996(6):19-20. ZHANG J Q. Data acquisition and processing techniques for load spectrum[J]. Construction Machinery and Equipment, 1996(6):19-20(in Chinese).
[10] SONSINO C M. Fatigue testing under variable amplitude loading[J]. International Journal of Fatigue, 2007, 29(6):1080-1089.
[11] ZHANG W, LI Y, LIU G, et al. Fatigue life retro estimation of wing structure under different load spectra[J]. Engineering Failure Analysis, 2004, 11(4):605-612.
[12] YAN J H, ZHENG X L, ZHAO K. Experimental investigation on the small-load-omitting criterion[J]. International Journal of Fatigue, 2001, 23(5):403-415.
[13] HEULER P, SEEGER T. A criterion for omission of variable amplitude loading histories[J]. International Journal of Fatigue, 1986, 8(4):225-230.
[14] WANG C J, YAO W X, XIA T X. A small-load-omitting criterion based on probability fatigue[J]. International Journal of Fatigue, 2014, 68:224-230.
[15] VLEK D, BUCHTA V. Randomized loading sequence for L 410 airplane[J]. Procedia Engineering, 2015, 101:524-533.
[16] 熊峻江,高镇同,费斌军,等.疲劳/断裂加速试验载荷谱编制的损伤当量折算方法[J].机械强度, 1995, 17(4):39-42. XIONG J J. GAO Z T, FEI B J, et al. The Equivalent damage calculation method to compile the fatigue/fracture accelerated test load spectrum[J]. Journal of Mechanical Strength, 1995, 17(4):39-42(in Chinese).
[17] 熊峻江,高镇同,阎楚良,等.飞机结构疲劳加速谱编制及损伤概率分布[J].航空学报, 1997, 18(1):1-5. XIONG J J, GAO Z T, YAN C L, et al. Load spectrum drawing for the accelerative test of the aircraft component and the damage probability distribution[J]. Acta Aeronautica et Astronautica Sinica, 1997, 18(1):1-5(in Chinese).
[18] XIONG J J, SHENOI R A. A load history generation approach for full-scale accelerated fatigue tests[J]. Engineering Fracture Mechanics, 2008, 75(10):3226-3243.
[19] 费斌军,熊峻江,高镇同,等.疲劳/断裂加速试验载荷谱的编制及其实验研究[J].实验力学, 1995, 10(4):292-301. FEI B J, XIONG J J, GAO Z T, et al. The approach to draw up the fatigue and fracture accelerative test load spectrums and related experimental study. Journal of Experimental Mechanics, 1995, 10(4):292-301(in Chinese).
[20] 熊峻江.飞行器结构疲劳与寿命设计[M].北京:北京航空航天大学出版社, 2004:16-81. XIONG J J. Fatigue life design for aircraft structures[M]. Beijing:Beihang University Press, 2004:16-81(in Chinese).
[21] 穆志韬,曾本银.直升机结构疲劳[M].北京:国防工业出版社, 2009:256-260. MU Z T, ZENG B Y. Fatigue of helicopter structure[M]. Beijing:National Defence Industry Press, 2009:256-260(in Chinese).
[22] 航空工业部科学技术委员会.应力集中系数手册[M].北京:高等教育出版社, 1990:267-274 Committee of Aeronautics Industrial Ministry. Handbook of stress concentration factor[M]. Beijing:Higher Education Press, 1990:267-274(in Chinese).

Vibration fatigue load spectrum compilation and test verification

RichHTML

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	CUI Ming, FENG Jianmin, MI Zheng, GUO Junhao. Loading technology for main structure of large UAV durability test [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(6): 525887-525887.
[2]	LI Yuhai, WANG Chengbo, CHEN Liang, DONG Hongda, GUAN Yu, DI Hongliang, GU Yuxuan. Overview on development of advanced fighter life design and extension technology [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021, 42(8): 525791-525791.
[3]	CHEN Yaping, YU Jianjian, HU Lei, WANG Yutang. Characteristics and application of bending moments of helicopter rotor shaft [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021, 42(5): 524168-524168.
[4]	QI Xiaofeng, YANG Yu, KANG Weiping, WANG Qian. Fatigue damage monitoring of lug joints with random load spectrum based on acoustic emission [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021, 42(5): 524518-524518.
[5]	MU Tong, MENG Ge, XIE Liyang, ZHANG Jianbo, SHI Chaocheng. Accelerated random fatigue test design based on stress distribution model [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2020, 41(2): 223229-223229.
[6]	MIN Qiang, WANG Bintuan, WANG Yafang, LEI Xiaoxin. Compiling load spectrum method for arrested deck-landing of carrier-based aircraft [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2019, 40(4): 622284-622284.
[7]	ZHOU Daiying, ZHANG Ying, FENG Jian. Estimation of target precession frequency based on time-domain difference of sequential HRRPs [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2018, 39(S1): 722183-722183.
[8]	CUI Ronghong, LIU Kai, HOU Bo, TAN Xiangfei, HE Yuting. Crack monitoring based on high durability film sensor in coupled environment [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2018, 39(3): 421535-421535.
[9]	LEI Xiaoxin, ZHANG Yanjun, JI Luming, ZHU Liang. Equivalent analysis spectrum construction method for aircraft structure containing cracks [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017, 38(S1): 721577-721577.
[10]	HOU Wei, WANG Xiaoyu, JING Xiaodong, SUN Xiaofeng. A quasi-one-dimensional nonlinear model of an open-closed standing-wave thermoacoustic engine [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2016, 37(7): 2091-2101.
[11]	HE Xiaofan, DONG Yinghao, LI Yuhai, LIU Wenting. Probabilistic fracture mechanics approach accounting for both the variability of load spectra and of structural properties [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015, 36(4): 1142-1149.
[12]	LIU Hao, LIU Shanghe, CAO Hefei, HU Xiaofeng, FAN Gaohui, ZHANG Yue. Simulation experiment of electromagnetic pulse radiation of corona discharge under high-altitude low pressure [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015, 36(12): 3930-3937.
[13]	LUO Chen, CAI Jianping, XU Guangxing, ZHAO Liangliang, LIU Ming, SUN Zhihua, TANG Zhihui, LU Feng. Equivalent Degradation of Aviation Organic Coating During Indoor Accelerated Testing and Outdoor Exposure [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2014, 35(6): 1750-1758.
[14]	HE Xiaofan, WANG Qiang, LIU Wenting. A Method for Determining the Exceedance Envelope of Severe Spectrum Based on the Acceleration-exceedance Curves of Fokker 27 Airplanes [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2013, 34(4): 840-845.
[15]	DUAN Ruifeng, LIU Rongke, ZHOU You, WANG Runxin, HOU Yi. A Low-complexity Coarse Carrier Acquisition Algorithm for Signals with Extremely Low Signal Noise Ratio and High Dynamics [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2013, 34(3): 662-669.