Investigation of the influence of wall stiffness on the stress ratio in mammoth silos

To calculate the stresses on the walls of silos, it is necessary to have a good estimate of the ratio of horizontal to vertical stress. This ratio however is not known precisely, especially in cases of static stress as found in a mammoth silo. In this paper the influence of the wall stiffness on the...

Full description

Saved in:
Bibliographic Details
Published in:Powder technology 1994-03, Vol.78 (3), p.213-220
Main Authors: van Leeuwenstijn, P.L.L., van Wijk, L.A., Haaker, G.
Format: Article
Language:English
Subjects:
Applied sciences
Chemical engineering
Exact sciences and technology
Handling and storage of chemicals. Piping
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:To calculate the stresses on the walls of silos, it is necessary to have a good estimate of the ratio of horizontal to vertical stress. This ratio however is not known precisely, especially in cases of static stress as found in a mammoth silo. In this paper the influence of the wall stiffness on the ratio of horizontal to vertical stresses in situations with limit strain is investigated. A new test method is developed, with which the ratio can directly be measured. A key feature of this method is the comparability with the practice. The method uses reinforced rubber membranes which have the same order of radial stiffness as mammoth silos. Another objective was to determine the extent to which the ratio of horizontal to vertical stresses with limit strain is dependent on the internal angle of friction, φ i. Special attention was paid to Jaky's formula, which is often used to calculate the neutral stress ratio.
ISSN:0032-5910
1873-328X
DOI:10.1016/0032-5910(93)02794-B