Table 1 Physical parameters of the rotor.
From: Negative potential energy content analysis in cracked rotors whirl response
Physical parameter description | Value |
|---|---|
Length of the steel shaft \((L)\) | 700Â mm |
Radius of the steel shaft \((R)\) | 10Â mm |
Density of the steel shaft \((\rho_{s} )\) | \(7850{\text{ kg/m}}^{3}\) |
Modulus of elasticity of the steel shaft \((E)\) | \(2.1 \times 10^{11} {\text{ N/m}}^{2}\) |
Mass unbalance \((m \cdot e)\) | \(1 \times 10^{ - 4} {\text{ kg}} \cdot {\text{m}}\) |
Unbalance force angle \((\beta )\) | varying |
External viscous damping coefficient \((\gamma )\) | \(100{\text{ s}}^{ - 1}\) |
Internal viscous damping coefficient \((\zeta )\) | \(2 \times 10^{ - 7} {\text{ s}}\) |
Outer radius of the aluminum rigid disk \((r_{o} )\) | 150Â mm |
Inner radius of the aluminum rigid disk \((r_{i} )\) | 10Â mm |
Thickness of the aluminum rigid disk \((h)\) | 15Â mm |
Mass of the aluminum rigid disk | \(0.663{\text{ kg}}\) |
