  The multi-physics coupling behaviours of HTS coils have now received much
attention. In particular, the electromagnetic field, temperature field and
mechanical deformation interact with each other during quench of high-field
magnets. Accurate analysis of coupling behaviours becomes the key to designing
magnets and quench protection. In this paper, a multi-physics coupling model is
proposed based on T-A formulation with Neumann boundary conditions. It is
convenient to analyse the effects of deformation and temperature on the
electromagnetic field, as well as the redistribution of the current between the
different layers during quench.
