Research Article
The Load Capacity Model and Experimental Tests of a New Yielding Steel Prop
Table 1
Property parameters for the model.
| | Parameters | Value |
| | Radius of steel ball (/mm) | 2.5 | | The gap distance between inner and outer tube (/mm) | 1 | | Prescribed displacement in direction (/mm) | 2 | | Length of inner tube (/mm) | 100 | | Wall thickness of inner tube (/mm) | 10 | | Young’s modulus of inner tube (/GPa) | 210 | | Poisson’s ratio of steel ball and inner tube | 0.3 | | Friction coefficient between the steel ball and inner tube | 0.03 | | Yield strength of inner tube (/MPa) | 690 |
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