|Table of Contents|

[1] Liu Xin, Sun Beibei, Li Lie, Chen Jiandong, et al. Nonlinear identification and characterizationof structural joints based on vibration transmissibility [J]. Journal of Southeast University (English Edition), 2018, (1): 36-42. [doi:10.3969/j.issn.1003-7985.2018.01.006]

Nonlinear identification and characterizationof structural joints based on vibration transmissibility()

Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

2018 1
Research Field:
Mechanical Engineering
Publishing date:


Nonlinear identification and characterizationof structural joints based on vibration transmissibility
Liu Xin Sun Beibei Li Lie Chen Jiandong Xue Fei
School of Mechanical Engineering, Southeast University, Nanjing 211189, China
structural joint vibration transmissibility nonlinear identification harmonic balance method
In order to investigate the nonlinear characteristics of structural joint, the experimental setup with a jointed mass system is established for dynamic characterization analysis and vibration prediction, and a corresponding nonlinearity identification method is studied. First, the sine-sweep vibration test with different base excitation levels are applied to the structural joint system to study the dominant modal of mass rigid motion. Then, based on the harmonic balance method principle, the measured vibration transmissibilities are utilized for nonlinearity identification using different excitation levels. Experimental results show that nonlinear spring and damping force can be represented by a polynomial order approximation. The identified nonlinear stiffness and damping force can predict the system’s response, and they can reveal the shifts of resonant frequency or damping due to discontinuity of contact mechanisms within a certain range.


[1] Eriten M, Kurt M, Luo G, et al. Nonlinear system identification of frictional effects in a beam with a bolted joint connection[J]. Mechanical Systems and Signal Processing, 2013, 39(1): 245-264.DOI:10.1016/j.ymssp.2013.03.003.
[2] Cai L. Review on dynamic properties of bolted joints[J]. Journal of Mechanical Engineering, 2013, 49(9): 158.DOI:10.3901/jme.2013.09.158.
[3] Luo L, Sun B B, Chen H X. Parametric modeling and lightweight optimization for cross beam of punch based on grid deformation and agent model[J]. Journal of Southeast University(Natural Science Edition), 2015, 45(1):56-62. DOI:10.3969/j.issn.1001-0505.2015.01.011. (in Chinese)
[4] Chen C S, Wang Q, Liu R F, et al. Effect of bolt connection on structural vibration modes and transfer characteristics[J]. Journal of Vibration & Shock, 2014, 33(12):42-47.(in Chinese)
[5] Luan Y, Guan Z Q, Cheng G D, et al. A simplified nonlinear dynamic model for the analysis of pipe structures with bolted flange joints[J]. Journal of Sound and Vibration, 2012, 331(2): 325-344. DOI:10.1016/j.jsv.2011.09.002.
[6] Wang Y, Li F M. Nonlinear dynamics modeling and analysis of two rods connected by a joint with clearance[J].Applied Mathematical Modelling, 2015, 39(9): 2518-2527. DOI:10.1016/j.apm.2014.10.056.
[7] Cai L. Identification of nonlinear joint parameters with force-state mapping method[J]. Journal of Mechanical Engineering, 2011, 47(7): 65-72. DOI:10.3901/jme.2011.07.065.
[8] Wei H T, Kong X R, Wang B L, et al. Non-linear dynamic response of a beam with bolted joint based on modal shape transfer[J]. Journal of Vibration & Shock, 2014, 33(12):42-47.(in Chinese)
[9] Heller L, Foltête E, Piranda J. Experimental identification of nonlinear dynamic properties of built-up structures[J]. Journal of Sound and Vibration, 2009, 327(1): 183-196. DOI:10.1016/j.jsv.2009.06.008.
[10] Guo H, Zhang J, Liu R, et al. Effects of joint on dynamics of space deployable structure[J]. Chinese Journal of Mechanical Engineering, 2013, 26(5): 861-872. DOI:10.3901/cjme.2013.05.861.
[11] Jalali H, Ahmadian H, Mottershead J E. Identification of nonlinear bolted lap-joint parameters by force-state mapping[J]. International Journal of Solids and Structures, 2007, 44(25): 8087-8105. DOI:10.1016/j.ijsolstr.2007.06.003.
[12] Ahmadian H, Jalali H. Identification of bolted lap joints parameters in assembled structures[J]. Mechanical Systems and Signal Processing, 2007, 21(2): 1041-1050. DOI:10.1016/j.ymssp.2005.08.015.
[13] Liu X, Sun B, Xue F, et al. Identification of nonlinear parameter of mechanical joint system based on vibration tests[J]. Journal of Vibration Engineering and Technologies, 2016, 4(5):475-482.
[14] Wang J M, Zheng C L. Nonlinear analytical modeling and analysis for bolted joint structures[J]. Journal of Vibration and Shock, 2013, 32(20):5-8.(in Chinese)


Biographies: Liu Xin(1987—), male, Ph.D.candidate; Sun Beibei(corresponding author), female, doctor, professor, bbsun@seu.edu.cn.
Foundation items: The Major National Science and Technology Project(No.2012ZX04002032, 2013ZX04012032), Graduate Scientific Research Innovation Project of Jiangsu Province(No.KYLX-0096).
Citation: Liu Xin, Sun Beibei, Li Lie, et al.Nonlinear identification and characterization of structural joints based on vibration transmissibility[J].Journal of Southeast University(English Edition), 2018, 34(1):36-42.DOI:10.3969/j.issn.1003-7985.2018.01.006.
Last Update: 2018-03-20