... and cylindrical metal shells whereby, in the first step, dimple-shaped dents are created by indenting a perfect shell into the plastic range. Then, in the second step, buckling of the dented shell is analyzed, under external pressure for the spherical shells and in axial compression for the cylindrical shells...

...Jan Sieber; John W. Hutchinson; J. Michael T. Thompson This paper investigates the robustness against localized impacts of elastic spherical shells pre-loaded under uniform external pressure. We subjected a pre-loaded spherical shell that is clamped at its equator to axisymmetric blast-like impacts...

...K. Aderogba A spherical drop of viscosity μ ( 1 ) and radius a 1 is surrounded by a spherical shell of viscosity μ ( 2 ) , internal radius a 1 , and external radius a 2 , beyond which there is an unbounded matrix fluid of viscosity μ ( 3 ) . An arbitrary axisymmetric singularity acts inside...