Study And Simulation Of Vibration Isolation Effect Of FPS Bearing Under Variable Friction

With the rapid development of seismic isolation technology,modern society has increasingly higher safety requirements for building structures.Various new types of seismic isolation bearings and other types of seismic isolation facilities need to be developed and utilized.The whole thesis puts forward a new type of vibration isolation principle of variable FPS bearing,and carries on corresponding analysis and simulation calculation to it.The specific work content is as follows:1)Take a 7-story structure as an example.Set the electromagnetic action device between the FPS track and the slider It creates additional pressure between them.And that changes the friction in the system.2)According to the Principle of Lagrange equation,the motion equation of FPS isolation system with variable friction action is established.And the corresponding solving program was compiled through MATLAB software.The paper uses the principle of fuzzy control to determine the additional pressure.3)During the simulation analysis,six seismic waves under different conditions are loaded for calculation.The peak seismic acceleration is adjusted to a uniform value for easy analysis and comparison.At the same time change the friction coefficient of the contact surface and the additional pressure coefficient.Comparative analysis of the difference between the constant coefficient FPS isolation effect and the variable friction isolation effect under different earthquakes.4)Calculation data display.Different seismic waves have different effects on the structure.The lower friction coefficient will make the damping effect of the structure better Normally.When the friction coefficient is the smaller value of 0.01 and the additional pressure coefficient is the larger value,the vibration isolation effect of FPS bearing with variable friction is good,while the effect of variable friction is general in other cases.Figure 60;Table 14;Reference 48...