Verification of a 3-dimensional model for filling pressures in square thin-walled silos

Goodey, R.J.; Brown, Chris; Rotter, J. M.

doi:10.1016/j.engstruct.2003.07.003

Cited by 41 publications

(32 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A major review and comparative study of the finite element method was carried out by Rotter et al [29]. The effect of wall flexibility in circular silos was studied by Ooi and Rotter [24] where the critical role of the relative stiffness of the solid and the containing structure was demonstrated, and by Goodey et al [7] for square planform silos which made the same finding. The reduction in pressures at the mid-side of each wall in a rectangular silo was also shown by Goodey et al [30] in a preliminary study.…”

supporting

confidence: 48%

“…Experimental observations have shown that a 3D model is required for a square silo, due to the variation of wall pressure across each silo wall [6,35]. An adequate description of the stored bulk solid behaviour is particularly difficult [36] and a number of authors have implemented acceptable limitations in order to produce tractable models [24,7]. Most previous finite element work on silo pressures has assumed the silo wall to be a rigid boundary, but in their analysis of circular silos Ooi and Rotter [24] demonstrated that the pressures could be governed by the relative stiffness of the granular solid and the wall, and that k (the local value of horizontal to vertical pressure) could vary throughout the stored bulk solid.…”

Section: Existing Finite Element Modelsmentioning

confidence: 99%

“…The larger deflections lead to reduced wall pressures on significant parts of the silo walls, so that more economic structural designs can be achieved by using moderately flexible walls. Finally, increased membrane action in these walls may reduce bending effects [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…This paper presents a wider-ranging study of pressures on the walls of rectangular planform silos using the same validated finite element model [20].…”

mentioning

confidence: 99%

“…These experimental observations were reinforced and accurately modelled by finite element calculations using a validated constitutive model for the stored bulk solid [20,7].…”

mentioning

confidence: 99%

See 4 more Smart Citations

Rectangular steel silos: Finite element predictions of filling wall pressures

Goodey

Brown

Rotter

2017

Engineering Structures

View full text Add to dashboard Cite

This is the accepted version of the paper.This version of the publication may differ from the final published version. Abstract: The pressures exerted on the walls of rectangular planform steel flexible-walled silos by several different stored granular bulk solids are investigated using a validated finite element model that has been used in several previous studies. These pressures and the state of stress in the bulk solid are explored for a range of silo geometries and stored bulk solids. Permanent repository linkThe results show that the horizontal pressure distribution across a silo wall is generally not uniform. This demonstrates that widely used theories may be adequate for stiff concrete silos, are far from suited to flexible-walled steel silos, and the differences can be used to produce much lighter structures. These findings match previously published experimental and analytical results for square planform silos where much larger pressures develop in the corners. The present analyses show that rectangular silos differ from those of square section, in that the mean pressure and degree of pressure variation is different on the two walls. The mechanisms causing these changes are investigated. The results further demonstrate that relatively small changes in the properties of a stored solid can produce significant changes in the pressure magnitudes and patterns, and hence greatly influence the silo structural design.The paper concludes that existing design guidance is seriously deficient and leads to metal silos that are considerably more expensive than is necessary.ª Author to receive correspondence.2

show abstract

supporting

confidence: 48%

Section: Existing Finite Element Modelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…This paper presents a wider-ranging study of pressures on the walls of rectangular planform silos using the same validated finite element model [20].…”

mentioning

confidence: 99%

“…These experimental observations were reinforced and accurately modelled by finite element calculations using a validated constitutive model for the stored bulk solid [20,7].…”

mentioning

confidence: 99%

See 3 more Smart Citations

Rectangular steel silos: Finite element predictions of filling wall pressures

Goodey

Brown

Rotter

2017

Engineering Structures

View full text Add to dashboard Cite

show abstract

04.20: Bending of rectangular plates subject to non‐uniform pressure distributions relevant to containment structures

2017

View full text Add to dashboard Cite

This is the accepted version of the paper.This version of the publication may differ from the final published version. ABSTRACT Rectangular planform silos are often used where there is need for simple construction or space restrictions. The flexibility of the flat plate walls leads to a horizontal variation in wall pressure across each wall, with much reduced pressures at the mid-side. There is a clear and systematic relationship between the wall flexural stiffness relative to the stiffness of the stored solid and the pressure pattern on the wall which is now well proven. Since the centre of each wall is subject to significantly reduced pressures, it may be expected that the bending moments in the wall will much lower, permitting the use of a thinner wall. In turn, the thinner wall is then more flexible and leads to a further redistribution of the pressures. This paper is the first to examine the structural consequences of these pressure changes. The horizontal variation of the wall pressure is well captured by a hyperbolic form, with much reduced mid-side pressures and raised corner pressures, characterised by a single parameter "alpha" that determines the strength of this redistribution. This parameter  is naturally dependent on the relative wall and solid stiffness. In this study, the value of  is varied between the uniform pressure condition  = 0 and a high value (=3). The highest values occur when a stiff solid is stored in a silo with very flexible walls. Wall plates of different aspect ratio are investigated representing conditions in a square or rectangular silo. The finite element predictions show that great savings can be made in the design of these structures by exploiting the reduced deflections and reduced stresses that arise when realistic patterns of pressure are adopted. The results presented here are suitable for transformation into design rules for the Eurocode standards EN 1993-1-7 [1] and EN 1993-4-1 [2]. Permanent repository link

show abstract

Flow behavior of non-spherical particle flowing in hopper

Wang

Jin

2014

Front. Energy

View full text Add to dashboard Cite

Verification of a 3-dimensional model for filling pressures in square thin-walled silos

Cited by 41 publications

References 16 publications

Rectangular steel silos: Finite element predictions of filling wall pressures

Rectangular steel silos: Finite element predictions of filling wall pressures

04.20: Bending of rectangular plates subject to non‐uniform pressure distributions relevant to containment structures

Flow behavior of non-spherical particle flowing in hopper

Contact Info

Product

Resources

About