FEXLA
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Principles

How a vessel carries load, and how it gives way. Ten articles, each with its own drawings and a worked illustration. Start with the first, or pick any other.

  1. 01Local loads on pressure vessel shellsHow a shell carries a push and a bend at a nozzle, how far the stress reaches, and how it splits through the wall.7 min read
  2. 02Primary and secondary stressWhy some stresses get tight limits and others are judged by their range, with peak stress for fatigue.6 min read
  3. 03Load-controlled and displacement-controlled loadsLoads that must be carried, movements that balance themselves, and why yielding helps only one of them.6 min read
  4. 04Discontinuity stress: making parts fitWhy a stiff part and a flexible part under the same pressure bend each other at the joint, and how far it reaches.5 min read
  5. 05Stress categories and their limitsHow the stress categories combine into checks, and why each check has its own limit.6 min read
  6. 06Ratcheting and shakedownWhat happens when a steady stress meets one that cycles: shakedown, plastic cycling or ratcheting.6 min read
  7. 07Shell buckling fundamentalsWhy a thin shell under compression can lose its shape well below yield, and what raises its buckling load.5 min read
  8. 08Linear eigenvalue buckling analysisHow a computer model finds a buckling load multiplier, and why its answer needs reducing.5 min read
  9. 09Elastic and elastic-plastic analysisTwo ways to judge a computed stress: sort it against limits, or let the metal yield.5 min read
  10. 10Nonlinear material modelsWhich stress-strain curve to give the computer model, and what each one is for.5 min read

Educational articles. They explain principles and are not design guidance; follow your governing code and edition.