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The paper presents the operating principle, experiments and calculations of a magnetic spring. Force exerted by the magnetic spring is a result of interaction of magnetic fields formed by magnets and coils. The stiffness of the spring can be modified by changing the current in coils. The paper presents FE model of the spring. Static characteristic of the spring were determined using results of FE...
In the paper two-degree-of-freedom system with self-powered active control was considered. The skyhook control scheme was assumed in calculation. The DC motor was used as the energy regenerative damper that converts the vibration energy into electric energy. The regenerative energy was stored in capacitor or battery. The results of numerical simulation of the motion excited by random process were...
This paper presents an analysis of dynamic characteristics of a cantilever beam with a magnetorheological (MR) fluid. The beam consists of two aluminium outer layers and MR fluid layer placed between them. Due to MR fluid control capabilities both damping and stiffness of the beam can be changed simultaneously. The simple model of three-layered structure is assumed. Vibration characteristics of the...
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