Specification for toroidal strip-wound cores made of magnetically soft material

2015 ◽  
1972 ◽  
Vol 39 (2) ◽  
pp. 451-455 ◽  
Author(s):  
D. V. Wallerstein ◽  
M. O. Peach

When a plate of magnetically soft material is supported with its wide surface normal to a uniform magnetic field, it will buckle when the field reaches a critical value. This paper formulates the problem quite generally for thin plates (including beams) and carries the solution as far as can be done without making specific assumptions as to plate geometry and constraints. The special case of wide cantilever beam, considered earlier by Moon and Pao, is carried through in detail. It is shown that if their theoretical result is modified to take account of the increased field intensity caused by the plate, agreement with experiment is within 20 percent.


Many of the distinctive and useful phenomena of soft matter come from its interaction with interfaces. Examples are the peeling of a strip of adhesive tape or the coating of a surface or the curling of a fibre via capillary forces or the electrically driven ow along a microchannel, or the collapse of a porous sponge. These interfacial phenomena are distinct from the intrinsic behaviour of a soft material like a gel or a microemulsion. Yet many forms of interfacial phenomena can be understood via common principles valid for many forms of soft matter. Our goal in organizing this school was to give students a grasp of these common principles and their many ramifications and possibilities. The school comprised over fifty 90-minute lectures over four weeks in July 2013. Four four-lecture courses by Howard Stone, Michael Cates, David Nelson, and L. Mahadevan served as an anchor for the program. A number of shorter courses and seminars rounded out the school.This volume presents lecture notes prepared by the speakers and submitted for publication after the school. The lectures are grouped under two main themes: Hydrodynamics and interfaces, and Soft matter.


Author(s):  
Rohit Rampal ◽  
Tarun Goyal ◽  
Deepam Goyal ◽  
Manoj Mittal ◽  
Rajeev Kumar Dang ◽  
...  

2020 ◽  
Author(s):  
Danyal Magnus ◽  
David R. Sory ◽  
James Lee ◽  
Mansoor A. Khan ◽  
William G. Proud

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