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| Content Provider | Springer Nature Link |
|---|---|
| Author | Hill, J. M. Cox, G. M. |
| Copyright Year | 2002 |
| Abstract | The formation of stable circular and almost vertical cylindrical holes in stockpiles and hoppers is a familiar phenomena in granular material industries and is often the cause of serious disruption to the industry. These holes are referred to as “rat-holes” and the precise conditions under which they may form or the stability of an existing rat-hole are two issues which have yet to be properly resolved in the literature. We do not address these issues here, but for an existing rat-hole, and assuming a shear-index granular material, we determine the limiting stress profiles. Existing theory applies only to the Coulomb-Mohr yield function. A shear-index granular material is one for which failure due to frictional slip between particles, occurs when the shear and normal components of stress τ and σ satisfy the so called Warren Spring equation (vτv/C)n=1−(σ/t), wherec, t andn are positive constants which are referred to as the cohesion, tensile strength and shear-index respectively, and the known numerical values of the shear-index indicate that for certain materialsn lies between the values 1 and 2. The valuen=1 corresponds to the standard Coulomb-Mohr yield function while the valuen=2 permits some further analytical investigation, and stress profiles for these two values constitute bounds for those shear-index materials for which 1 |
| Starting Page | 157 |
| Ending Page | 172 |
| Page Count | 16 |
| File Format | |
| ISSN | 00015970 |
| Journal | Acta Mechanica |
| Volume Number | 155 |
| Issue Number | 3-4 |
| e-ISSN | 16196937 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2002-01-01 |
| Publisher Place | Vienna |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Numerical and Computational Methods in Engineering Continuum Mechanics and Mechanics of Materials Structural Mechanics Vibration, Dynamical Systems, Control Engineering Fluid Dynamics Engineering Thermodynamics, Transport Phenomena |
| Content Type | Text |
| Resource Type | Article |
| Subject | Mechanical Engineering Computational Mechanics |
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