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Documentation/Modules/7.1 Pipe Stress Analysis

7.1 Pipe Stress Analysis

Internal pressure and stress analysis

Standards catalog

Validation: indicative · Method band: fem

Open calculator

Indicative method: Indicative closed-form or numerical model

Assumptions

  • Linear elastic material behavior unless noted otherwise.
  • User is responsible for load combinations and load factors per the selected design code.

Limitations

  • Does not replace a licensed professional engineer or official code compliance review.

Engineering checks

CheckINDUSEUISO
Sustained stress utilizationimplementedimplemented——
Occasional stress utilizationimplementedimplemented——
Peak stress utilizationimplementedimplemented——

7.1 Pipe Stress Analysis (pipes)

Purpose: Cylindrical pipe under internal pressure — hoop/longitudinal stress and deformation.

Method: FEM — thin cylindrical shell discretization; compares to thin-wall theory.

Thin-wall reference:

\sigma_h = \frac{p r}{t}, \quad \sigma_l = \frac{p r}{2t} $$[^asme-b31-3-referenced-indicative-hoop-longitudin] **Design codes:** ASME B31.3 referenced; indicative hoop/longitudinal utilization. **UI:** Modern `inputs`/`results`; unit profile. **Gaps:** No bends, supports, or thermal expansion; high refactor risk. --- [^asme-b31-3-referenced-indicative-hoop-longitudin]: ASME B31.3 referenced; indicative hoop/longitudinal utilization.
Maintainer note: Pressure + stress coupling with detailed solver internals.