# OS-E:0900 Seam Weld Fatigue Analysis and Size Optimization of a Frame Structure

Demonstrates Seam weld fatigue optimization using OptiStruct.

## Model Files

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

The model file used in this example includes:

frame_seam2_opt.fem

## Model Description

**FE Model**- Elements Types
- CQUAD

**MAT1**- Young’s Modulus
- 2.1E5 MPA
- Poisson Ratio
- 0.3
- Density
- 7.9E-9

## Results

The final design of the fatigue analysis and size optimization of the frame has 23% mass saving.

The Fatigue life improved from 22634 cycles to 504017 cycles at element 303718 and the minimum fatigue life was improved to 250415 cycles.