Table 6 Material properties of adhesive.

Elastic modulus of adhesive (GPa)

E_a

4.82

Nominal stress normal mode only (MPa)

t_n

31.28

Nominal stress shear directions (MPa)

t_s, t_t

31.28

Elastic stiffness of the adhesive in normal direction (N/mm³)

K_nn

4.72 × 10¹³

Elastic stiffness of the adhesive in shear directions (N/mm³)

K_ss, K_tt

2.36 × 10¹³

Fracture energy of the adhesive in normal direction (N/mm)

G_n

1

Fracture energy of the adhesive in shear directions (N/mm)

G_s, G_t

1.25