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Image of Vibration Testing and System Dynamics
ISSN: 2475-4811 (print)
ISSN: 2475-482X (online)
Journal of Vibration Testing and System Dynamics

C. Steve Suh (editor), Pawel Olejnik (editor),

Xianguo Tuo (editor)

Pawel Olejnik (editor)

Lodz University of Technology, Poland

Email: pawel.olejnik@p.lodz.pl

C. Steve Suh (editor)

Texas A&M University, USA

Email: ssuh@tamu.edu

Xiangguo Tuo (editor)

Sichuan University of Science and Engineering, China

Email: tuoxianguo@suse.edu.cn

Numerical Analysis of Fluid-Structure Interaction of Fire Doors in Cross-Passages of Subway Tunnels

Journal of Vibration Testing and System Dynamics 5(1) (2021) 19--32 | DOI:10.5890/JVTSD.2021.03.002

Yong-hang Sun$^{1}$, Zhong Luo$^{1, 2, 3 }$ , Kai Wei$^{1}$, Yu Wang$^{1}$, Gui-xin Han$^{1}$

$^{1}$ School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, PR China

$^{2}$ Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry of Education, Northeastern University, Shenyang 110819, PR China

$^{3}$ State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, PR China

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Abstract

This study is concerned with the dynamic response of fire doors in cross-passages of subway tunnels. Fire doors in cross-passages of subway tunnels are prone to failure due to the piston effect. First, a full-size model of a section of tunnel in Shenyang Metro was established. Then, computational fluid dynamics (CFD) was used to simulate unsteady airflow under different train speeds. Pressure on the surface of the fire door was obtained and the pressure was set as the excitation on the finite element model of the fire door. Finally, the structural response of the fire door was obtained through explicit dynamics analysis. Maximum stress on the fire door structure was found to be 10.05 MPa. Consistent results were obtained with the actual failure warping deformation, it can be considered that the piston wind is the main factor leading to the warping deformation of the fire door. The findings provide guidance for the installation and maintenance of fire doors in metro tunnels.

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