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Wandi Arnandi
Dosen Teknik Mesin Universitas Tidar
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Journal : Wahana Ilmuwan

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STUDI EKSPERIMENTAL PEMBANGKITAN GAYA MAGNETIK PADA KUMPARAN BERARUS DALAM MEDAN MAGNET NEODYMIUM Wandi Arnandi; Sigit Iswahyudi
Wahana Ilmuwan Vol 3, No 1 (2017): Wahana Ilmuwan
Publisher : Wahana Ilmuwan

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Abstract

This research is a preliminary study to develop a magnetic force generator as a thrush force of vehicle. The purpose is to investigate the effect of electric current and coil diameter on the generation of magnetic force of current-carrying coilconductor in magnetic field of neodymium magnet. To reach the goal, a magnetic circuit and three coil which havea difference of coil diameter were made and tested. The coilswere made of laminated copper wirewhich have 1,1 mm in diameter and 3000 mm length. The coil diameter was varied 35 mm, 38 mm, and 50 mm. The source of magnetomotive force in the magnetic circuit was cylindrical neodymium magnet.The source of dc current was power supply which can produce 30 ampere of output dc current and output voltage that can be varied. The electric current in the coil was set up 1,0 ampere; 2,0 ampere; 3,0 ampere; 4,0 ampere; 5,0 ampere; 6,0 ampere; and 7,0 ampere. Testing was carried out by flowing current in the coil which placed in the magnetic flux of magnetic circuit and then magnetic force produced by the coil was measured using spring scale in unit of Newton. Result shows that the magnitude of magnetic force produced by thecoil is directly proportional tothe magnitude of electric current and coil diameter.
STUDI PEMBANGKITAN TORSI PADA CAKRAM BAJA MENGGUNAKAN GAYA-MEDAN MAGNET NEODYMIUM Sigit Iswahyudi; Wandi Arnandi
Wahana Ilmuwan Vol 3, No 1 (2017): Wahana Ilmuwan
Publisher : Wahana Ilmuwan

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This works is a preliminary study that evaluates probability of torque generation in steel disc by field force of neodymium magnet. The study was started by analyzing ferromagnetic disc that is surrounded by magnets. In simulation, the disc had a diameter of 400 m and was made of S416. The magnets used in the simulation had cubed form and length of 10 mm. The magnets were placed around the disc in such a way that the center of their poles made an angle of 42 degrees from the disc radii. The nearest distance between center magnet poles to the center of the disc was 210.6 mm. There were six configurations of magnets to be evaluated, i.e. configurations of 1, 2, 4, 8, 16 and 32 magnets. Effects of magnet configurations on torque generation in the disc were evaluated by using MagNet software. Simulation results show that the highest torque was achieved by 16 magnet configuration.
Co-Authors Sigit Iswahyudi