1 Introduction
2 Theoretical Formulations
2.1 Kinetic Energy and Potential Energy of Pressure Pipe
2.2 Galerkin Discretization of the Energy Equation
2.3 Differential Equation of Forced Vibration
2.4 Differential Equation of Forced Vibration with SS-SS Boundary Conditions
3 Model Validation
n
| Eq. (24) | ||
---|---|---|---|
1 | 0.016101 | 0.016101/0.016102 | 0.00/0.01 |
2 | 0.009377 | 0.009382/0.009387 | 0.05/0.00 |
3 | 0.022103 | 0.022105/0.022108 | 0.01/0.02 |
4 | 0.042094 | 0.042095/0.042096 | 0.00/0.00 |
5 | 0.068007 | 0.068008/0.068008 | 0.00/0.00 |
6 | 0.099729 | 0.099730/0.099730 | 0.00/0.00 |
7 | 0.137238 | 0.137239/0.137239 | 0.00/0.00 |
8 | 0.180527 | 0.180527/0.180527 | 0.00/0.00 |
9 | 0.229593 | 0.229594/0.229594 | 0.00/0.00 |
10 | 0.284435 | 0.284435/0.284435 | 0.00/0.00 |
4 Results and Discussion
4.1 Influence of Pressure and h/R on Natural Frequencies
4.2 Influence of Pressure and L/R Radio on Natural Frequencies
4.3 Influence of Pressure and Circumferential Wave Number on Natural Frequencies
5 Validation, Analysis and Application Examples
5.1 Validation and Analysis
m
|
n
| |||||
---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 6 | |
1 | 439.4 (a1) | 230.5 (b1) | 249.4 (c1) | 341.2 (d1) | 454.7 (e1) | 583.4 (f1) |
2 | 979.3 (a2) | 574.9 (b2) | 406.0 (c2) | 402.9 (d2) | 483.6 (e2) | 601.8 (f2) |