Research Article
Influence of Fir-Tree Tenon Blade Parameters on Blade Dynamic Characteristics
Table 1
The parameters of the finite element model.
| | Symbols | Meaning | Unit |
| | Ω | The rotational speed of the system | rad/s | | R | Blade disc radius | mm | | L | Length of the blade | mm | | B | Width of the blade | mm | | H | Height of the blade | mm | | n | Number of the blade division elements | — | | Length of the element | mm | | Pi | Any point in the i-th element | — | | xi | Distance from Pi to the first node of the i-th element | mm | | E | Young’s modulus of the blade | Pa | | Poisson’s ratio of the blade | — | | I | Moment of inertia of the blade section | mm4 | | ρ | The density of the blade | kg/m3 | | Shear correction factor | — | | Lateral displacement due to blade deformation | mm | | Fc | The centrifugal force of the blade | N | | Fy | Lateral component of centrifugal force | N | | Shear strain due to shear force | — | | Θ | The rotation angle of the blade section | ° | | φ | Neutral shaft angle | ° |
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