Ri_upper 80[mm] "Upper arch radius"
Ri_lower 100[mm] "Lower arch radius"
d 3[mm] "Arch thickness"
seg_upper 80[deg] "Upper arch segment"
seg_lower 100[deg] "Lower arch segment"
n_elem_upper 30 "Number of mesh elements, upper arch"
n_elem_lower 75 "Number of mesh elements, lower arch"
F_ref -1[N/mm] "Reference load value"
max_disp 60[mm] "Maximum displacement"
para 0 "Load parameter"