Figure 4

Comparison of the buckling modes for the 51 mm-thick sphere under external pressure. (A) Buckling Mode 0 (COQMULT), (B) Buckling Mode 2 (COQMULT), (C) Buckling Mode 0, β = 1 (QUA8), (D) Buckling Mode 0, β = 0.0001 (QUA8).