TY - GEN
T1 - Parameter Estimation of Jointed Structures Using Alternating Frequency-Time Harmonic Balance
AU - Taghipour, Javad
AU - Jamia, Nidhal
AU - Friswell, Michael I.
AU - Haddad Khodaparast, Hamed
AU - Jalali, Hassan
N1 - Funding Information:
Acknowledgement The authors gratefully acknowledge the support of the Engineering and Physical Sciences Research Council through the award of the Programme Grant “Digital Twins for Improved Dynamic Design”, grant number EP/R006768/1.
Publisher Copyright:
© 2023, The Society for Experimental Mechanics, Inc.
PY - 2022/7/29
Y1 - 2022/7/29
N2 - Despite all the efforts made to investigate the dynamics of jointed structures, they still remain as one of the uncertain dynamical systems in structural dynamics. Modelling the dynamic behaviour of bolted joint contact interfaces is one of the most challenging tasks in structural dynamics. The multi-frequency response of nonlinear systems, particularly bolted joint structures, is an important characteristic for the model identification of such structures. The alternating frequency-time approach using a harmonic balance (AFTHB) is used in this study to identify the nonlinear model of the bolted joint of the Brake-Reuß beam. Vibration tests with harmonic excitation were performed over a range of frequencies to measure the dynamic response of the structure. The two beams of the structure are modelled using Timoshenko beam theory. A model selection procedure using the measured data is applied to a range of candidate models to model the dynamics of the joint contact interface. The AFTHB approach is then applied to estimate the unknown parameters of the assumed nonlinear model of the structure utilizing the experimentally measured data. The estimated parameters are used to reconstruct the measured dynamic response of the structure.
AB - Despite all the efforts made to investigate the dynamics of jointed structures, they still remain as one of the uncertain dynamical systems in structural dynamics. Modelling the dynamic behaviour of bolted joint contact interfaces is one of the most challenging tasks in structural dynamics. The multi-frequency response of nonlinear systems, particularly bolted joint structures, is an important characteristic for the model identification of such structures. The alternating frequency-time approach using a harmonic balance (AFTHB) is used in this study to identify the nonlinear model of the bolted joint of the Brake-Reuß beam. Vibration tests with harmonic excitation were performed over a range of frequencies to measure the dynamic response of the structure. The two beams of the structure are modelled using Timoshenko beam theory. A model selection procedure using the measured data is applied to a range of candidate models to model the dynamics of the joint contact interface. The AFTHB approach is then applied to estimate the unknown parameters of the assumed nonlinear model of the structure utilizing the experimentally measured data. The estimated parameters are used to reconstruct the measured dynamic response of the structure.
KW - Brake-Reuß beam
KW - Jointed structures
KW - Multi-harmonic response
KW - Nonlinear model identification
KW - Parameter estimation
UR - http://www.scopus.com/inward/record.url?scp=85135770729&partnerID=8YFLogxK
U2 - 10.1007/978-3-031-04086-3_28
DO - 10.1007/978-3-031-04086-3_28
M3 - Conference contribution
AN - SCOPUS:85135770729
SN - 9783031040856
SN - 9783031040887
VL - 1
T3 - Conference Proceedings of the Society for Experimental Mechanics Series
SP - 203
EP - 214
BT - Nonlinear Structures and Systems, Volume 1
A2 - Brake, Matthew R.W.
A2 - Renson, Ludovic
A2 - Kuether, Robert J.
A2 - Tiso, Paolo
PB - Springer
CY - Switzerland
T2 - 40th IMAC, A Conference and Exposition on Structural Dynamics, 2022
Y2 - 7 February 2022 through 10 February 2022
ER -