Simulation and Validation of an Anisotropic Magnetorheological Elastomers Mold with Various Alignment Angles

Abstract

In this study, anisotropic magnetorheological elastomers (MREs) mold design with capability of aligning the filler in several angles (0 ̊, 45 ̊, and 90 ̊) were developed. The mold was equipped with electromagnet coil to generate the magnetic flux. The distribution of magnetic flux density in the mold and inside the chamber was investigated by using finite element magnetic analysis. Magnetic flux density of 0.3 T was considered best value to form good particle alignment in the matrix. Moreover, the mold design was fabricated using same material as in the simulation. The magnetic flux density was taken at casing wall and measured by gauss-meter. The data was compared with simulation results. The differences between experimental and simulation is in the range of 6-40 mT. Since the difference is insignificant, it can be said that the data is valid. Finally, the model can be used for further magnetic flux density prediction inside the chamber. In the simulation, it was found that the current needed to generate at least 0.3 T inside the chamber for 0 ̊, 45 ̊, and 90 ̊ are 0.2A, 0.1A, and 3A, respectively.

Tensile Properties of Isotropic and Anisotropic Magnetorheological Elastomer With and Without Magnetic Field Application

“…In the simulation of the magnetic flux density passing through the sample, researchers [24], [25] commonly employ Finite Element Method Magnetics (FEMM), a methodology also utilized in the present study. However, the power source for the curing device in this investigation was capable of producing only 1.2A of current, which represents approximately 40% of the reported 3A requirement for generating 300 mT necessary for the vertical alignment of the MRE sample [26]. Consequently, due to this limitation, the curing device is constrained to provide only around 65 to 70 mT, as determined by the FEMM analysis presented in Fig.…”