OS-E: 0165 Contact Smoothing With Two Concentric Rings
Contact smoothing is useful to increase accuracy of the contact solution. An enforced displacement to push two concentric rings toward each other to engage the contact is used. The usage of NLOUT entry allows you to study the progression of SPC force over successive increments.

Figure 1. FE Model
Model Files
Refer to Access the Model Files to download the required model file(s).
The model files used in this example include:
- cylinder_in_cylinder_push_rotate_SMOOTH_example.fem
- cylinder_in_cylinder_push_rotate__NO_SMOOTH_example.fem
Model Description
- FE Model
- Elements Types
- CHEXA
- MAT1
- Young’s Modulus
- 2.1E+5
- Poisson's Ratio
- 0.3
- Large Displacement Nonlinear Static Analysis
- NLSTAT
- Nonlinear Parameters
- NLPARM
Results

Figure 2. (a) Smoothing is Active; (b) Smoothing is Inactive