factor of safety in a chamber during firing is calculated based on titanium

1. Solidworks Simulation
Pressure induced stress
in .38 calibur revolver
05/03/2016
Don Blanchet
3B Associates
USNNRL00127892-406

2. Model – Smith & Wesson
38 special model 10
Model courtesy of Chuck Witt Grabcad

3. Analysis
 Cylinder chamber loaded to 22,000 psi
– 38 special cartridge 110 grain
 Material : Titanium

4. Cylinder model

5. Meshed model
Adaptive fine mesh
Fired chamber

6. Applied pressure load

7. Stress

8. Elastic Deformation

9. Factor of Safety
Titanium S yield = 120,000 psi

10. Conclusion
 For higher grain cartridges controlled
proof load testing is required.