...Royan J. D’Mello; Anthony M. Waas Hemispherical shells subjected to external pressure loading are known to be sensitive to geometric imperfections. Dimple imperfections and their effects on the buckling and postbuckling response of spherical and hemispherical shells under externally applied...

...S. Gerasimidis; J. W. Hutchinson Departures of the geometry of the middle surface of a thin shell from the perfect shape have long been regarded as the most deleterious imperfections responsible for reducing a shell’s buckling capacity. Here, systematic simulations are conducted for both spherical...

...S. Chung Kim Yuen; G. N. Nurick This two-part article presents the results of experimental and numerical work on the crushing characteristics of square tubes, with blast-induced imperfections, subjected to axial load. In Part I, the experimental studies are presented. The approach in the studies...

...S. Chung Kim Yuen; G. N. Nurick This two-part paper presents the results of experimental and numerical work on the crushing characteristics of square tubes, with blast-induced imperfections, subjected to axial load. In Part I, the experimental studies are presented. The approach in the studies...

... at the hole locations. The model satisfactorily predicts the resultant collapse shapes but overpredicts the crushed distance. 02 10 2007 02 11 2007 27 04 2009 carbon steel crushing drilling finite element analysis pipes square tubes imperfections multiple circular cut-outs...

... square tubes imperfections multiple hole cut-outs energy absorption High impact events such as transport-related accidents can result in life-changing injuries or loss of life to vehicle occupants. Attempts to minimize this damage primarily require the absorption of the kinetic energy...