TY - GEN
T1 - Modelling the Effect of Preload in a Lap-Joint by Altering Thin-Layer Material Properties
AU - Jamia, Nidhal
AU - Jalali, Hassan
AU - Friswell, Michael I.
AU - Khodaparast, Hamed Haddad
AU - Taghipour, Javad
N1 - Funding Information: This research is funded by the Engineering and Physical Sciences Research Council through Grant no. EP/R006768/1. Javad Taghipour acknowledges financial support from the College of Engineering at Swansea University through the PhD scholarship in support of EPSRC project EP/P01271X/1.
PY - 2022
Y1 - 2022
N2 - The joints in an assembled structure represent a significant source of energy dissipation and may lead to overall stiffness variation, which may affect high cycle fatigue failure. Many approaches have been developed to model and simulate the dynamics of bolted joint structures. However, the inherent dynamics of the contact interfaces still need further investigation in order to be able to generate accurate models to predict the behaviour in the contact interface. In this paper, the modelling of the contact interface of a bolted lap-joint and the prediction of its pressure distribution are considered using 2D and 3D FE models. A 3D finite element model with solid elements is developed to simulate the behaviour of the contact interface. The model is a modified thin-layer element where the material properties of a thin layer are distributed over the contact interface. Due to the high computational cost of the 3D model, a reduced-order model is proposed for the lap-joint in which beam elements are used. The material properties are introduced in these models to account for the variability in the contact parameters. Finally, experimental modal properties were used to identify the joint parameters. A good agreement is obtained between the detailed model and the reduced-order model in the prediction of the pressure distribution in the contact interface.
AB - The joints in an assembled structure represent a significant source of energy dissipation and may lead to overall stiffness variation, which may affect high cycle fatigue failure. Many approaches have been developed to model and simulate the dynamics of bolted joint structures. However, the inherent dynamics of the contact interfaces still need further investigation in order to be able to generate accurate models to predict the behaviour in the contact interface. In this paper, the modelling of the contact interface of a bolted lap-joint and the prediction of its pressure distribution are considered using 2D and 3D FE models. A 3D finite element model with solid elements is developed to simulate the behaviour of the contact interface. The model is a modified thin-layer element where the material properties of a thin layer are distributed over the contact interface. Due to the high computational cost of the 3D model, a reduced-order model is proposed for the lap-joint in which beam elements are used. The material properties are introduced in these models to account for the variability in the contact parameters. Finally, experimental modal properties were used to identify the joint parameters. A good agreement is obtained between the detailed model and the reduced-order model in the prediction of the pressure distribution in the contact interface.
KW - Bolted lap-joint
KW - Detailed model
KW - Joint parameters
KW - Modified thin-layer element
KW - Pressure distribution
UR - https://www.scopus.com/pages/publications/85120527705
U2 - 10.1007/978-3-030-77135-5_25
DO - 10.1007/978-3-030-77135-5_25
M3 - Conference contribution
AN - SCOPUS:85120527705
SN - 9783030771348
VL - 1
T3 - Conference Proceedings of the Society for Experimental Mechanics Series
SP - 211
EP - 217
BT - Nonlinear Structures and Systems, Volume 1
A2 - Kerschen, Gaetan
A2 - Brake, Matthew R.
A2 - Renson, Ludovic
PB - Springer
CY - Cham
T2 - 39th IMAC, A Conference and Exposition on Structural Dynamics, 2021
Y2 - 8 February 2021 through 11 February 2021
ER -