Abstract: In this study, a stability concept in terms of the properties of an effective force field is introduced. A criterion for determining certain infinitesimal disturbances which may amplify with ...

Abstract: A quasi-bifurcation criterion for determining certain infinitesimal disturbances which may amplify with time in an elastic-plastic body subject to prescribed initial, kinematic and time-dependent ...

Abstract: The onset of wrinkling of an unevenly stretched sheet metal subject to finite deformation is analyzed by an incremental finite element method. The sheet metal is modeled as a plate made of ...

Abstract: The dynamic buckling behavior of a complete spherical shell made of a bilinear or work-hardening material and under a uniform external impulsive loading is investigated. A quasi-bifurcation theory ...

Abstract: In this paper the inelastic effect on the axisymmetric buckling load of a clamped shallow spherical shell subjected to an external pressure is investigated. A variational principle derived from ...