TY - GEN
T1 - INFLUENCE OF THE CONTACT INTERFACES ON THE DYNAMICS AND POWER FLOW BEHAVIOR OF THE BOLTED STRUCTURE
AU - Wang, Yongfeng
AU - Ma, Yanhong
AU - Hong, Jie
AU - Battiato, Giuseppe
AU - Firrone, Christian Maria
N1 - Publisher Copyright:
Copyright © 2022 by ASME.
PY - 2022
Y1 - 2022
N2 - Bolted joints are widely used for the assembly of mechanical components to provide continuity of the structure and transfer internal actions (i.e. forces and moments) from one member to another. Contact and dry friction at the jointed interface have a great influence on the dynamical performance of the assembly, especially for light-weight and heavy-loaded structures, such as the aero-engine. In this paper, the nonlinear dynamic response of a turbo-engine casing in the presence of bolted flanges is studied, using one reduced order model of an elementary casing sector with means of node-to-node contact elements. while the vibration power flow method for the structural system with frictional interfaces is proposed, to reveal effects of energy dissipation at contact interfaces. It concluded that, the resonance frequencies and vibration responses of the bolted structures are influenced by the interfacial contact state, and the damping induced at the slipping contact area surrounding the bolt decreased the vibration response. Power flow through the bolted structure are visualized, which clarified the energy dissipation at the bolted interfaces.
AB - Bolted joints are widely used for the assembly of mechanical components to provide continuity of the structure and transfer internal actions (i.e. forces and moments) from one member to another. Contact and dry friction at the jointed interface have a great influence on the dynamical performance of the assembly, especially for light-weight and heavy-loaded structures, such as the aero-engine. In this paper, the nonlinear dynamic response of a turbo-engine casing in the presence of bolted flanges is studied, using one reduced order model of an elementary casing sector with means of node-to-node contact elements. while the vibration power flow method for the structural system with frictional interfaces is proposed, to reveal effects of energy dissipation at contact interfaces. It concluded that, the resonance frequencies and vibration responses of the bolted structures are influenced by the interfacial contact state, and the damping induced at the slipping contact area surrounding the bolt decreased the vibration response. Power flow through the bolted structure are visualized, which clarified the energy dissipation at the bolted interfaces.
KW - Bolted flanges
KW - contact interfaces
KW - energy transmission
KW - nonlinear responses
KW - simulation
UR - https://www.scopus.com/pages/publications/85141406321
U2 - 10.1115/GT2022-82840
DO - 10.1115/GT2022-82840
M3 - 会议稿件
AN - SCOPUS:85141406321
T3 - Proceedings of the ASME Turbo Expo
BT - Structures and Dynamics - Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME Turbo Expo 2022: Turbomachinery Technical Conference and Exposition, GT 2022
Y2 - 13 June 2022 through 17 June 2022
ER -