Title :
Modeling of flexible components for asserting the stability of superconducting magnets
Author :
Kumar, Abhay ; Dutta, Subhajit ; Bapna, SC ; Kotaiah, S. ; Poncet, Alain
Author_Institution :
Raja Ramanna Centre for Adv. Technol., Indore
Abstract :
Superconducting magnets are subjected to various forces during their cool down and alignment. A good estimate of the deformations arising out of the cool down and alignment operations is necessary as these induce relative displacements between the fiducialised external vessel and hidden cold mass of the magnet. The nonlinear and orthotropic behaviour of these elements may make the model complicated and if solved as a non-linear problem, would entail a large solution time a s the overall model size runs into millions of nodes. The authors developed a unified finite element model of the LHC short straight section and during this process many innovative modelling techniques evolved. The developed model uses isotropic material constitutive laws with linear material properties. This paper presents some of the salient features of these modelling techniques.
Keywords :
accelerator magnets; finite element analysis; superconducting magnets; LHC short straight section; isotropic material constitutive laws; linear material properties; superconducting magnets; unified finite element model; Bellows; Equations; Finite element methods; Hoses; Lifting equipment; Magnetic materials; Magnetoelasticity; Material properties; Stability; Superconducting magnets;
Conference_Titel :
Particle Accelerator Conference, 2007. PAC. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
978-1-4244-0916-7
DOI :
10.1109/PAC.2007.4440205