TY - GEN
T1 - Bolt-Jointed Structural Modelling by Including Uncertainty in Contact Interface Parameters
AU - Jamia, Nidhal
AU - Jalali, Hassan
AU - Friswell, Michael I.
AU - Haddad Khodaparast, Hamed
AU - Taghipour, Javad
N1 - Funding Information: 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.
PY - 2022/7/29
Y1 - 2022/7/29
N2 - In jointed structures, both stiffness and damping properties are affected by the way that the contact interfaces behave. The overall behaviour of the contact interface is the result of different parameters; among them are the contact surface quality and interface pressure distribution. Small changes in these parameters result in a considerable change in the physics of the contact interface and hence introduce variability in structural dynamics properties. The variability in the contact interface can happen among nominally identical structures. These features raise the need for robust models of the joint contact interface to predict their performance in the structure. In this paper, experimental modal testing of a set of nominally identical Brake-Reuss beam structures is employed to investigate the effect of preload on the variability in the natural frequencies and damping ratios for different modes of the structure. The contact interface is modelled using a representative stochastic model to account for the variabilities in the contact interface parameters. Finally, the distribution of the joint model stiffness parameters is identified using the variability in dynamic properties.
AB - In jointed structures, both stiffness and damping properties are affected by the way that the contact interfaces behave. The overall behaviour of the contact interface is the result of different parameters; among them are the contact surface quality and interface pressure distribution. Small changes in these parameters result in a considerable change in the physics of the contact interface and hence introduce variability in structural dynamics properties. The variability in the contact interface can happen among nominally identical structures. These features raise the need for robust models of the joint contact interface to predict their performance in the structure. In this paper, experimental modal testing of a set of nominally identical Brake-Reuss beam structures is employed to investigate the effect of preload on the variability in the natural frequencies and damping ratios for different modes of the structure. The contact interface is modelled using a representative stochastic model to account for the variabilities in the contact interface parameters. Finally, the distribution of the joint model stiffness parameters is identified using the variability in dynamic properties.
KW - Brake-Reuss
KW - Contact interface
KW - Stiffness parameters
UR - https://www.scopus.com/pages/publications/85135845677
U2 - 10.1007/978-3-031-04086-3_27
DO - 10.1007/978-3-031-04086-3_27
M3 - Conference contribution
AN - SCOPUS:85135845677
SN - 9783031040856
SN - 9783031040887
VL - 1
T3 - Conference Proceedings of the Society for Experimental Mechanics Series
SP - 193
EP - 201
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 - Cham, Switzerland
T2 - 40th IMAC, A Conference and Exposition on Structural Dynamics, 2022
Y2 - 7 February 2022 through 10 February 2022
ER -