Parametric stress distribution in shell-of-revolution sludge digesters of parabolic ogival form

Studies on seismic performances of the prestressed egg-shaped digester with shaking table test

“…Remarkably, one can find that this shape also occurs in Figs. [8][9][10]. This means that there are some common features in different cases no matter whether the digester is filled with water or not and no matter what and how large ground acceleration is input.…”

“…The shells of the digesters are usually in a complex stress state and need careful studies [9,10]. On the other hand, particular importance should be attached to response analysis of the ESDs under earthquake because of the complexity of the problem and the prohibitively severe consequence of failure [11,12].…”

Equatorial bending of an elliptic toroidal shell

“…Junction stresses in various shell assemblies and multi-segmented vessels have been the subject of intensive studies over the past 15 years [21][22][23][24][25]. Mechanics phenomena around shell intersections and at shell-branching locations have also been of interest [26,27].…”