PD/2T Calculators
pdby2t.com
PD/2T Calculators (pdby2t.com) is calculation software for pressure equipment design, developed by a mechanical engineer working in pressure vessel and equipment design.
The name is the thin-wall hoop stress relation, σ = PD/2t — the first calculation in sizing a pressure vessel shell. The tools here cover what that relation does not: stresses from local loads at nozzles, clips and supports.
Principles
- Method stated
- Every result names the method it comes from and traces each coefficient to its source.
- Limits stated
- Inputs outside a method's validated range are reported, not silently extrapolated.
- Engineer's inputs
- Allowables and material data are entered by the user and printed as entered.
- Verification required
- Results support engineering judgement. They do not replace review by a qualified engineer.
Current scope
| Local stress analysis (WRC 537) | Clips and nozzles on cylinders, nozzles on heads, clips and nozzles on cones | Available |
| Shell-element FEA | Mesh, solve and ASME VIII-2 Part 5 elastic checks built; independent verification in progress | Early access |
Questions, corrections or reference cases: contact.
