Title: Coupling of Magneto-Thermal and Mechanical Superconducting Magnet Models by Means of Mesh-Based Interpolation,
Abstract: In this paper we present an algorithm for the coupling of magneto-thermal and
mechanical finite element models representing superconducting accelerator
magnets. The mechanical models are used during the design of the mechanical
structure as well as the optimization of the magnetic field quality under
nominal conditions. The magneto-thermal models allow for the analysis of
transient phenomena occurring during quench initiation, propagation, and
protection. Mechanical analysis of quenching magnets is of high importance
considering the design of new protection systems and the study of new
superconductor types. We use field/circuit coupling to determine temperature
and electromagnetic force evolution during the magnet discharge. These
quantities are provided as a load to existing mechanical models. The models are
discretized with different meshes and, therefore, we employ a mesh-based
interpolation method to exchange coupled quantities. The coupling algorithm is
illustrated with a simulation of a mechanical response of a standalone
high-field dipole magnet protected with CLIQ (Coupling-Loss Induced Quench)
technology.