Abstract
Many vibration isolators, for example, passive vehicle mounting devices, have fixed rigidity. This article presents the development of an adjustable stiffness engine mount based on the magnetorheological elastomer (MRE) to reduce engine vibration. The development of the first MREs vibration isolator was to design the engine mounting, and then to simulate a magnetic circuit. The choice of housing material and the thickness of the MRE is considered to complement a sufficient and uniform magnetic field to change the stiffness. The innovative magnetic circuit design includes the type and size of the wire and the number of turns of the coil for optimal magnetic field. Finite Element Method Magnetics (FEMM) software was used to demonstrate the effectiveness of electromagnetic circuits in generating magnetic fields through MRE samples. Finally, influenced by the various current input in the coil, the performance of the MRE vibration isolator is investigated. The input electric current whose value increases is more useful to change the increased stiffness value of the MRE-based isolator system.
Highlights
IntroductionThere are many machines vibrate both on a small and large scale
In the engineering field, there are many machines vibrate both on a small and large scale
The objective of this paper is to develop a vibration isolator using magnetorheological elastomers (MRE) material and optimize variable such as housing material selection
Summary
There are many machines vibrate both on a small and large scale. Many types of system can be used to reduce vibration or disturbance, for example, a passive system, a semi-active system, and an active system [1]. Passive systems are solely practical for dampening vibrations in a very limited frequency, due to the permanent nature of material stiffness. If some other forces, disturb the load, it the load will oscillate up and down around its original position for some time To solve these problems, many researchers have studied various active and semi-active systems both theoretically and experimentally. The active isolation system differs from the conventional passive system in its ability to inject energy from external source into the system. A notable amount of researcher works has been performed to overcome the limitations of vibration dampening devices that are passive in reducing vibration frequencies.
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