# OS-E: 0155 Snap-Fit Analysis (CONSLI versus FINITE)

Snap-fit is a combination of two components namely mating and base part which form a mechanical attachment between them by means of locators, locks and enhancements. Nonlinear Static Analysis with large displacement theory is used to solve this example.

## Model Files

Refer to Access the Model Files to download the required model file(s).

The model file used in this example includes:

snap-fit.fem

## Model Description

**FE Model**- Element Types
- CTETRA

**MAT1 and MATS1**- Young’s Modulus
- 2700 MPA
- Poisson's Ratio
- 0.35
- Initial Density
- 1.04E-9 Mg/mm
^{3}

Stress versus Strain curve is defined with MATS1.

## Results

Concludes that the high stress concentration areas (Figure 2) are sensitive to the ramp-angle of the block, thickness of the flap and sharp corners. Such problem areas can be improved by means of notches, appropriate angles on the mating and base parts, respectively.