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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
Differential equations governing dynamic behavior of toroid-shaped ferro-magnetic material having a small gap of uniform width were derived incorporating Maxwell equations of electromagnetic induction relevent to the system and Newtonian equation of motion. Once the external uniform magnetic field was applied within the material through dc-circuit around the toroid, gap begin to change which lead to the abrupt variation of field in the material and gap according to thc differential equations already derived. Characteristics of current and electromotive force with respect to time in the circuit consisting of inductance and resistance in series could be predicted from numerical solutions of these equations. As current in the circuit increases, magnetic field in the material increases, thus, the gap starts to shrink due to increased attractive force between the gap surfaces. As current decreases the gap become to expand due to reduced attraction between gap and clastic restoring force in the material. With an appropriate selection of elastic constant of toroidal ferromagnetic material and design of gap structure it is possible to obtain the specified in both linear and nonlinear magnetic characteristics , such as current dependent and independent inductance.
목차
Abstract
Ⅰ. INTRODUCTION
Ⅱ. THEORETICAL
Ⅲ. RESULTS AND DISCUSSION
Ⅳ. CONCLUSIONS
REFERENCES
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UCI(KEPA) : I410-ECN-0101-2009-428-015148319