Fig. 1

Schematic diagrams of FR model and homogenized orthotropic model for HTS composite magnets assembled by REBCO pancake coils (color online)"

Fig. 2

Flow diagram of multi-scale GH-LR model (color online)"

Fig. 3

Comparison of numerical simulation and experimental results of hoop strain for REBCO single pancake coils and current density distribution along tape width (color online)"

Fig. 4

Hoop stress in REBCO single pancake coil (displacement magnified 5 times) predicted with different models: (a) FR model; (b) homogenized model (color online)"

Fig. 5

Hoop stress in each material layer of composite tape predicted with FR, GH-LR, and homogenized models (color online)"

Fig. 6

Schematic diagram of 2D axisymmetric epoxy-impregnated REBCO pancake coil and RVE (color online)"

Table 1

Design parameters of epoxy-impregnated REBCO pancake coils"

Table 2

Material properties of primary constituent materials of epoxy-impregnated REBCO pancake coils[31–32]"

Fig. 7

Simulations of electromagnetic field in REBCO pancake coils with transport current I=300 A: (a) current density; (b) magnetic field distribution using GH T-A method; (c) comparison of current density distribution in each pancake at middle radius of coil using GH T-A and FR T-A methods (color online)"

Fig. 8

Electromagnetic forces acting on REBCO pancake coils with transport current I=300 A (displacement magnified 50 times): (a) radial electromagnetic force distribution; (b) axial electromagnetic force distribution (color online)"

Fig. 9

Mechanical responses of REBCO pancake coils with transport current I=300 A, predicted with GH model: (a) radial stress; (b) hoop stress; (c) von Mises stress (color online)"

Fig. 10

Comparison of radial stress and hoop strain distributions for Pancakes 1, 6, and 11 using FR model (color online)"

Fig. 11

Comparison of stress and strain distributions in various layers in region of maximum von Mises stress turn using GH-LR and FR models: (a) hoop stress; (b) radial strain; (c) current density and von Mises stress versus tape width (color online)"

Fig. 12

Comparison of stress and strain distributions in various layers in region of maximum radial stress turn using GH-LR and FR models: (a) hoop stress; (b) radial strain; (c) current density and von Mises stress versus tape width (color online)"

Table 3

Comparison of computational efficiency using different models"