OS-E: 0160 Nonlinear Static Analysis of Snap Fit Assembly Using Continuous Sliding

Demonstrates the effect of continuous sliding in Nonlinear Static (large displacement) Analysis.

Continuous sliding allows for the incorporation of continuous (large) relative sliding between the main and secondary. Contact is updated for every iteration. Continuous sliding contact is expected to produce more accurate results and, in some cases, better convergence robustness, especially when very large sliding and/or distortion are present.

Figure 1. FE Model

Model Files

Before you begin, copy the file(s) used in this example to your working directory.

Model Description

The Finite element model shown in Figure 1, is constrained with symmetric boundary conditions and applied prescribed displacement in the X-axis.
FE Model
Elements Types
The linear material properties are:
Young’s Modulus
5E3 MPa
Poisson's Ratio


Contact Force plot in the Snap Fit Assembly.

Figure 2. Contact Force (Y) for Node 58171
Deformation of the Snap Fit Assembly.

Figure 3. Deformed State of the Snap Fit Assembly
Element Stress in the Snap Fit Assembly.

Figure 4. Element Stress Plot of the Snap Fit Assembly