Powder alignment system for anisotropic bonded NdFeB Halbach cylinders
نویسندگان
چکیده
منابع مشابه
Powder Alignment System for Anisotropic Bonded NdFeB Halbach Cylinders
A Halbach cylinder, fabricated from pre-magnetized sintered NdFeB magnet segments, is proposed for the powder aligning system during the compression or injection moulding of anisotropic bonded Halbach oriented NdFeB ring magnets. The influence of leading design parameters of the powder aligning system, viz. the number of magnet segments per pole, their axial length and radial thickness, and the...
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An analytical technique is developed for predicting the performance of a bonded Halbach oriented anisotropic magnet, with due account of partial alignment of the NdFeB powder during injection molding. The predicted performance of a 12-pole injection molded, Halbach oriented magnet is compared with measurement.
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Permanent magnet variable flux sources are produced by rotating two nested N-segment, permanent magnet, Halbach cylinders. Torque is primarily an end effect, determined by field non-uniformities due to the fmite length and' segmented structure of the cylinders. Due to symmetry, one cylinder experiences zero torque In a uniform applied field. Experiment and numerical simulation reveal that the t...
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Axisymmetrical stresses in an infinitely long hollow isotropic circular cylinder (plane strain) quickly approach their asymptotic values as the external radius increases. This is not the case if the cylinder is even slightly anisotropic -asymptotic solutions (for an infinitely large external radius) do not exist. We find the mechanical meaning of this disparity by using formulas for radial and ...
متن کاملBig Area Additive Manufacturing of High Performance Bonded NdFeB Magnets
Additive manufacturing allows for the production of complex parts with minimum material waste, offering an effective technique for fabricating permanent magnets which frequently involve critical rare earth elements. In this report, we demonstrate a novel method - Big Area Additive Manufacturing (BAAM) - to fabricate isotropic near-net-shape NdFeB bonded magnets with magnetic and mechanical prop...
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ژورنال
عنوان ژورنال: IEEE Transactions on Magnetics
سال: 2000
ISSN: 0018-9464
DOI: 10.1109/20.908796