OS-V: 0280 Axisymmetric Elements - Interference Fit Between Two Cylinders

The model examines the contact pressure between two cylinders in case of interference fit of 20 mm.



Figure 1. Model and Loading Description

Benchmark Model

2D axisymmetric elements (CQAXI) elements are used to model 2 cylinders.

A minus gap clearance of 20mm was used to analyze interference fit between the cylinders. The cylinders are vertically fixed. Stationary frictionless contacts are used.
Material Properties
Value
Young's modulus
206 GPa
Poisson's ratio
0

Nonlinear Static Analysis Results

Static analysis was carried out using 1 increment.
OptiStruct NAFEMS Normalized Target Value
Contact Pressure 2.35 2.27 1.035


Figure 2. Contact Pressure Between the Cylinders

Model Files

The model file used in this example includes:

<install_directory>/hwsolvers/demos/optistruct/verification/Interference_fit.fem

Reference

NAFEMS Ltd, The Standard NAFEMS BENCHMARKS TNSB Rev. 3, NAFEMS Ltd, Scottish Enterprise Technology Park, Whitworth Building, East Kilbride, Glasgow, United Kingdom, 1990.