ISSN:
0264-4401
Source:
Emerald Fulltext Archive Database 1994-2005
Topics:
Technology
Notes:
Presents an alternative lower bound to the elastic buckling collapse of thin shells of revolution, in comparison with results from geometrically non-linear elastic analysis. The numerical finite element method is based on axisymmetric rotational shell elements whose strain-displacement relations are described by Koiter's small finite deflection theory, with displacements expanded circumferentially using a Fourier series. First, compares the reduced stiffness linear analysis, based on the buckling equation without incremental linear in-plane energy components corresponding to the lowest eigenmode (for a particular cylindrical shell under external pressure), with the results obtained by Batista and Croll. Second, the non-linear astatic (quasi-static) elastic analysis to clamped spherical caps under uniform external pressure is carried out in order to compare the results from a reduced stiffness analysis from viewpoints of not only buckling loads, but also total potential energy. Argues that the astatic buckling loads may relate to reductions due to a specific imperfection effect on elastic buckling collapses.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1108/02644409610114468
