Fluidic flexible matrix composite semi-active vibration isolation mounts

Variable stiffness f(2)mc are investigated for vibration isolation through analysis and experiments. The f(2)mc are novel structures that have been shown to achieve significant changes in stiffness through simple valve control. The objective of this research is to develop analysis tools to investigate the f(2)mc variable modulus system for semi-active vibration isolation and to validate the results through experiments. A non-linear analytical model of an isolation mount based on the f(2)mc tube with a proportional valve is developed. Analysis results indicate that the f(2)mc-based isolation mount is effective for reducing the force transmitted to the foundation and that the transmissibility ratio can be tuned via proportional valve control. Experimental results agree with analysis results and validate semi-active vibration isolation using a proportional valve.