Here, input data for Axial Vibration Applications are described. Data supplier is indicated in the ‘SUPPLIER’ column.
Axial Vibration Calculation Input Data List
| NAME | SUPPLIER |
| Directly Coupled Diesel Engine | |
| Engine type | Engine Manufacturer |
| MCR, kW | |
| Engine speed at MCR, rpm | |
| MIP (or MEP efficiency coefficient), Мpа/bar | |
| Cylinder number | |
| Firing order | |
| Cylinder diameter, mm | |
| Stroke, mm | |
| Conrod length or Crank/Conrod ratio | |
| Diameter and length of the crankpin | |
| Diameter and length of journal | |
| The tensile strength of crankshaft material | |
| The allowable bending stress of crankpin | |
| Mass of the crank equivalent of radial inertia forces, kg | |
| Radial harmonic coefficients and phases for normal operation | |
| Mass-Elastic system characteristics (mass,kg; stiffness, kN/mm) | |
| Absolute and Relative damping data, N s/mm | |
| Misfiring Mode characteristics: allowable power and speed, MIP(MEP) |
|
| Radial harmonic coefficients and phases for misfiring mode | |
| The allowable axial offset of forward crankshaft end | |
| NAME | SUPPLIER |
| Tilting-Pad Thrust bearing | |
| Mass, kg | Engine Manufacturer, thrust bearing Manufacturer |
| External stiffness (kN/mm) | |
| Internal stiffness (kN/mm) | |
| Oil film stiffness (kN/mm) | |
| Oil film damping, N s/mm | |
| Axial clearance, mm | |
| Allowable axial force | |
| Thrust shaft drawing | |
| Damper | |
| Mass, kg | Engine Manufacturer |
| Stiffness, N/m | |
| Damping data, N s/mm | |
| Grounding stiffness, N/m | |
| NAME | SUPPLIER |
| Propeller | |
| Diameter | Propeller Manufacturer |
| Number of blades | |
| Pitch ( max, nominal) | |
| Expanded area ratio | |
| Mass of dry propeller, kg | |
| Entrained water mass, kg (if there are customer’s value) | |
| Damping, N s/mm (if there are customer’s value) | |
| Thrust at MCR, kN | |
| Thrust = function(rpm) | |
| Excitation: 1-blade, 2-blade, 3-blade order (if there are customer’s value) | |
| Gearbox | |
| Output gear shaft drawing (with gear wheel) | Gearbox designer |
| Shafting | |
| Shafting drawings | Shaft designer |
| Flexible coupling | |
| Mass, kg | Flexible coupling manufacturer |
| Stiffness, N/m | |
| Damping data, N s/mm | |