The document discusses a simulation of a valve body casting to estimate the maximum internal proof load. The simulation found that under an internal pressure of 1500 psi, the material's yield point was exceeded locally. Refining the mesh with an adaptive technique reduced the maximum deformation. The conclusion recommends not exceeding an internal pressure of 1500 psi for proof testing to avoid yielding of the material.

1. Solidworks Simulation
Valve Body casting
proof load estimate
05/20/2016
Don Blanchet
3B Associates
USNNRL00127892-405

2. Model – cast steel

3. Meshed model

4. Meshed model openings blocked

5. Max stress under internal
pressure load of 1500 psi
Material yield point
Exceeded locally

6. Local yielding
Refined
Adaptive
mesh

7. MAX DEFORMATION

8. Conclusion
 For static pressure proof testing the
internal pressure should not exceed
1500 psi.