Local stress analysis for rectangular clip attachments on cylindrical shells — full WRC 537 coefficient interpolation and ASME pass/fail, in seconds instead of an afternoon with the bulletin charts.
01
Reading γ and β off rational-function tables by hand, then interpolating by eye between Bijlaard curves — an afternoon of work that's one transcription error from being wrong.
02
Spreadsheet templates that get the right answer but can't show which bulletin figure or coefficient produced it — a real problem the first time a third-party reviewer asks.
03
A personal .xlsx with hardcoded lookups isn't something you can hand to a client, a fabricator, or an ASME reviewer as a calculation package.
Three steps from geometry to a citable report.
Shell, clip, repad, design conditions, and external loading — the exact inputs the calculation needs, nothing invented.
Full Bijlaard / WRC 537 coefficient pipeline — γ/β interpolation, bilinear Mc/ML grids, all 8 stress locations.
ASME pass/fail, governing stress, and full audit trail — a PDF you can hand to a reviewer as-is.
Every feature exists because a reviewer asked for it.
Every stress value traced to its WRC 537 figure number and bulletin table — not a black box.
Governing combined stress checked against 1.5S and 3.0S allowables per Appendix G, with a clear compliance verdict.
Au, AL, Bu, BL and pad-edge Cu, CL, Du, DL — circumferential, longitudinal, shear, and combined, at every point.
Toggle on a reinforcing pad and get a full second set of edge stresses — not a rough estimate.
One export, ready to file — inputs, ratios, stress table, and methodology in a single citable document.
Flags when γ or β ratios fall outside the bulletin's tested range and shows exactly what was clamped.
Simple, honest — no feature matrix games.