Fluid-structure Coupling Vibration Research Of Cabin Door Based On ANSYS Workbench

The interactions between fluids and plates widely exist in nature.Fluid-structure interaction(FSI)is a cross-discipline which involves fluid mechanics,Solid mechanics,dynamics and computational mechanics.A linear partial differential equation of motion based on the Euler-Bernoulli beam theory are derived for the two-dimensional plate with different boundary condition.Finite element equations of fluid and structure are developed,and finite element model of fluid-structure interaction for plates in axial flow is established.The dynamical behavior and vibration responses of the plate at corresponding flow velocity are presented.A nonlinear partial differential equation of motion of the two-dimensional plate in axial flow based on the inextensibility assumption are derived from Hamilton's principle,and the nonlinear equation of motion is carried out.The developed nonlinear model of the cantilevered plate is validated by comparing with published research findings.Firstly,establish equations of the plates subjected to axial flow fluid-structure interaction,use ANSYS Workbench to make numerical simulation,at the same time,using Matlab to solve the theoretical value in order to verify the reliability of the numerical simulation.Then,based on ANSYS Workbench platform,fluid-structure interaction characteristics of the plate simulation is discussed.then the impaction of plate size,liquid flow rate,fluid pressure on the natural frequency of the system is introduced;while the above harmonic analysis,harmonic response curves plotted and analyzed.By introducing harmonic response analysis,vibration can be accurately simulatedThis thesis connects the flow-induced vibration of the plate-type structure with the dynamic of pipes conveying fluid.The research on this subject,which has great theoretical value and practical significance,not only reveals the mechanism of flow-induced vibration of plates,but also helps us to improve engineering design and application performance,prevent the vibration of structures induced by fluid flow,enhance the system stability and reliability.and this thesis is a theoretical reference for this topic.