Embed Size (px)
Citation preview
Smart Materials and Structures with Hybrid Nonlinear Vibration Control for Marine Applications
Guanghong Zhu [email protected]: Dr. Yeping Xiong, Prof. Steve Daley and Prof. R. A. Shenoi
Faculty of Engineering and the Environment
Fluid Structure Interactions Research Group
FSI Away Day 2012
Figure 3 A schematic hybrid control system
Figure 4 Work programme
Background
Figure 2 MRE without magnetic field and MRE under magnetic field
Challenges
MethodologyIn order to further investigate dynamical properties of different MREs, it is necessary to perform multiple modes dynamic loading tests.
The nonlinear vibration theory considering the actual strain–stress relationship will be employed to establish mathematical model and predict the dynamic response of the MRE material and structure.
A hybrid passive/active vibration control system with adaptive MRE materials (Figure 3) will be investigated.
Nonlinear power flow approach will be developed to analyze the vibration energy transmission mechanism to evaluate the vibration control effectiveness.
Nonlinear mathematical model of MRE materials and structures under multiple loading modes .
Develop the nonlinear power flow approach to analyse the energy transmission mechanism of the smart nonlinear dynamical systems.
Develop hybrid active/passive control system to effectively control vibration energy transmissions.
MotivationFor passenger ships (Figure 1), vibration and noise pollutions affect the comfort of passengers and crew members. Vibration and noise generated by marine engines create pollutions, which harm the marine life and become one of the environmental problems.New knowledge and technology need to be developed to address these problems by effectively controlling vibration transmission and acoustic noises.
Aims
Figure 1 Passenger ship
Acknowledgement:
Programme
