论文:2022,Vol:40,Issue(6):1320-1326
引用本文:
李益萱, 刘继军, 李凯翔, 白春玉. 基于扩展工况传递路径分析的振动环境预计方法研究[J]. 西北工业大学学报
LI Yixuan, LIU Jijun, LI Kaixiang, BAI Chunyu. The vibration environment prediction method based on OPAX[J]. Journal of Northwestern Polytechnical University

基于扩展工况传递路径分析的振动环境预计方法研究
李益萱, 刘继军, 李凯翔, 白春玉
中国飞机强度研究所, 陕西 西安 710065
摘要:
准确获得飞机结构及机载设备的振动环境至关重要,传统的振动环境预计方法预计准确度低,可能会导致后期振动环境试验过试验或欠试验的问题。创新性地提出了一种基于扩展工况传递路径分析(OPAX)的振动环境预计方法,采用实测数据搭建振动环境预计模型,再利用该模型对新工况下的振动环境进行预计。试验室环境下,搭建了某型飞机典型设备舱振动测试系统,基于OPAX方法搭建了机载设备的振动环境预计模型,并对其预计准确度进行了验证。对比预计结果与试验结果,得到:①新工况下模型预计均方根值与试验测试均方根值相比,误差保持在20%以内;②在预计频段范围内,新工况下模型预计的变化趋势与试验测试基本一致,个别频率处差异较大。综合新工况下预计结果,这种基于OPAX的振动环境预计方法预计精度较高,且搭建模型所需数据量较少,搭建方便,具有可操作性和工程实用价值。
关键词:    OPAX    飞机设备舱    振动环境预计    载荷识别   
The vibration environment prediction method based on OPAX
LI Yixuan, LIU Jijun, LI Kaixiang, BAI Chunyu
Aircraft Strength Research Institute, Xi'an 710065, China
Abstract:
It is widely known that obtaining the vibration environment of the aircraft structure and airborne equipment accurately is very important. The traditional vibration environment prediction method always has low accuracy, which may lead to the problem of over-test or under-test in the later vibration test. In this study, an innovative vibration-environment-prediction method is put forward based on operational path analysis with exogenous inputs (OPAX) method. In the laboratory, the vibration testing system is built, which focuses on one typical equipment cabin. Adopting the testing data, a vibration environment prediction model is set up, and its accuracy is verified under new loading condition. Through comparative analysis of prediction and test results, the conclusions can be drawn that: ①the error of the RMS value of the prediction model is kept within 20% when compared with the RMS value of the real testing data; ②within the frequency band range, the change trend of the prediction result is basically consistent with that of the test result, only at some individual frequencies, there is a big difference. It can be concluded that the prediction model built in this paper, which has high accuracy and is convenient to build, has a relatively high engineering practical value.
Key words:    OPAX    aircraft equipment cabin    vibration environment prediction    load identification   
收稿日期: 2022-02-18     修回日期:
DOI: 10.1051/jnwpu/20224061320
通讯作者:     Email:
作者简介: 李益萱(1988—),中国飞机强度研究所高级工程师,主要从事飞机振动环境研究。e-mail:liyixuan0430@126.com
相关功能
PDF(3793KB) Free
打印本文
把本文推荐给朋友
作者相关文章
李益萱  在本刊中的所有文章
刘继军  在本刊中的所有文章
李凯翔  在本刊中的所有文章
白春玉  在本刊中的所有文章

参考文献:
[1] 施荣明. 现代战斗机结构动强度设计技术指[M]. 北京:航空工业出版社, 2012 SHI Rongming. Technical guide for dynamic strength design of modern fighter structures[M]. Beijing:Aviation Industry Press, 2012 (in Chinese)
[2] PIERSOL A G. Summary of random vibration prediction procedures[R]. NASA CR-1302, 1967
[3] US DOD. Environmental engineering considerations and laboratory tests[S]. MIL-STD-810H, 2019:320-321
[4] FULLER Scharton. Assessment of space vehicle aeroacoustic-vibration prediction and testing[R]. NASA CR-1596, 1970
[5] 王光芦, 徐明, 李大鹏. 飞机飞行振动预计技术[J]. 航空工程进展, 2010, 8:251-255 WANG Guanglu, XU Ming, LI Dapeng. Aircraft flight vibration prediction methodology[J]. Advances in Aeronautical Science and Engineering, 2010, 8:251-255 (in Chinese)
[6] 刘昭, 徐俊, 胡小兵. 基于深度置信网络的机载外挂振动预计方法[J]. 航空动力学报, 2021, 6:1197-1205 LIU Zhao, XU Jun, HU Xiaobing. Vibration prediction method of aircraft external stores based on deep belief network[J]. Journal of Aerospace Power, 2021, 6:1197-1205 (in Chinese)
[7] 庞晓柯. 基于工况传递路径分析的挖掘机座椅振动研究[D]. 济南:山东大学, 2011 PANG Xiaoke. Excavator seat vibration research based on operational transfer path analysis[D]. Jinan:Shandong University, 2021 (in Chinese)
[8] KRISHNA R D, FREDERICK J Z, SHAN Uhaq. Application of noise path target setting using the technique of transfer path analysis[C]//SAE 2003 Noise & Vibration Conference and Exhibition, 2003
[9] 李云红. 信号与系统[M]. 北京:北京大学出版社, 2012 LI Yunhong. Signals and systems[M]. Beijing:Peking University Press, 2012 (in Chinese)
[10] 舒俊成, 贺尔铭, 易金翔, 等. 发动机振动载荷向客舱座椅传递特性研究[J]. 西北工业大学学报, 2020, 38(6):1163-1170 SHU Juncheng, HE Erming, YI Jinxiang, et al. Research on transfer characteristics of engine vibration load to cabin seat[J]. Journal of Northwestern Polytechnical University, 2020, 38(6):1163-1170 (in Chinese)
[11] 谭祥军. 旋转机械NVH分析与TPA分析[M]. 北京:机械工业出版社, 2020 TAN Xiangjun. The NVH analysis of the rotating machinery and TPA analysis[M]. Beijing:China Machine Press (in Chinese)
[12] 宋海生. 基于扩展OPAX传递路径方法的轻型客车振动控制研究[D]. 长春:吉林大学, 2012 SONG Haisheng. Research on vibration control of light bus based on improved operational-X transfer path analysis[D]. Changchun:Jilin University, 2012 (in Chinese)
[13] JANSSENS K. OPAX:a new transfer path analysis method based on parametric load models[J]. Mechanical Systems and Signal Processing, 2010, 25(4):1321-1338
[14] WYCKAERT K, AUWERAER V. Operational analysis, transfer paths analysis, modal analysis:tools to understand road noise problems in cars[C]//Proceedings of the 1995 Noise and Vibration Conference, 1995
[15] PLUNT J, KAMPH E, FOTHERGILL D. Dynamic analysis and acoustic optimization of the volvo multi-link rear suspension[C]//Proceedings of the 1989 Noise and Vibration Conference, 1989
[16] NOUMURA K, YOSHIDA J. Method of transfer path analysis for interior vehicle sound by actual measurement[J]. Honda R&D Technical Review, 2006, 18(1):136-141
[17] DEVIJYER P, KITTLER J. Pattern recognition:a statistical approach[M]. New Jersey:Prentice-Hall, 1982
[18] KOHAVI R. A study of cross-validation and bootstrap for accuracy estimation and model selection[C]//International Joint Conference on Artificial Intelligence, 1995