Mechanical Engineering
Press Fit Simulator
A variable-controlled machine element laboratory modeling structural contact pressure, hub hoop stress, axial slip force, and slip torque capacity of press-fit assemblies.
Fit Type
Interference Fit
Heavy shrink standard
Simulation Nodes
50 profile steps
Interference profile
Output
CSV
Data exportable
Parameters
Material Preset
Animated press-fit insertion
Governing Equations
Contact Pressure (P)
P = (E * δ) / (2 * d) * [1 - (d / do)²]
Max Hub hoop stress (σ)
σ = P * (do² + d²) / (do² - d²)
Axial pressing force (Fax)
Fax = π * d * L * P * μ
Torsional holding torque (T)
T = Fax * (d / 2)
Interface pressure of 75.00 MPa is generated at the shaft outer surface.
Maximum tensile stress (hoop stress) in the hub is 125.00 MPa, which occurs at the inner diameter d.
Joint can transmit up to 2208.9 N*m of torque and requires 88.36 kN of axial force to press in/out.
Linked Diagram
Interface Pressure
75.00MPa
Max Hub Stress
125.00MPa
Holding Torque
2208.9N*m
Axial Press Force
88.36kN
Pressure and Stress vs Interference
Simulation Performance Table
| Interference (mm) | Interface Pressure (MPa) | Max Stress (MPa) | Holding Torque (N*m) |
|---|---|---|---|
| 0.005 mm | 7.50 | 12.50 | 220.9 |
| 0.025 mm | 37.50 | 62.50 | 1104.5 |
| 0.045 mm | 67.50 | 112.50 | 1988.0 |
| 0.065 mm | 97.50 | 162.50 | 2871.6 |
| 0.085 mm | 127.50 | 212.50 | 3755.2 |
| 0.105 mm | 157.50 | 262.50 | 4638.8 |
| 0.125 mm | 187.50 | 312.50 | 5522.3 |
| 0.145 mm | 217.50 | 362.50 | 6405.9 |
| 0.165 mm | 247.50 | 412.50 | 7289.5 |
| 0.185 mm | 277.50 | 462.50 | 8173.0 |
| 0.205 mm | 307.50 | 512.50 | 9056.6 |
| 0.225 mm | 337.50 | 562.50 | 9940.2 |
| 0.245 mm | 367.50 | 612.50 | 10823.8 |