Comput.Struct. 32, 787-795, 1989


ANALYSIS OF FRICTIONAL CONTACT PROBLEMS
IN HIGH FIELD SUPERCONDUCTING MAGNETS
FOR A HADRON COLLIDER

F.G. Rammerstorfer¹, K. Dorninger¹, H.J. Böhm¹ and F. Zerobin²

¹Institute of Lightweight Structures and Aerospace Engineering,
TU Wien, Vienna, Austria
²ELIN Union, Weiz, Austria


Abstract - In order to achieve the extremely high magnetic fields (8 to 10 Tesla) required for CERN's LHC (large hadron collider) project superconducting coils are used in the deflecting magnets. One possible technology is the use of the brittle material Nb3Sn, which must be kept at low temperatures (4.2 K). The cooling down process and the variation of the stron electromagnetic forces during operation require special care. These situations are simulated by a finite element model taking into account the frictional contact between the individual components of the magnet assembly. In addition to the stress and strain distribution in the magnet the knowledge of local relative motions generating frictional heat is important for the consideration of the stability of the superconducting material.


(hjb,960708)