Damage and fracture — Gurson Zero Porosity
Damage and fracturePASS · 0%Damage, cohesive-zone, fracture-mechanics, or crack-growth verification. Checks: zero-porosity reduction and hydrostatic sensitivity.
- Tolerance:
- 5%
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Open & Solve in BrowserProblem statement
- Geometry
- Evaluate the Gurson yield function for f=0 and for small positive f under identical deviatoric/hydrostatic stresses.
- Material
- Constitutive or analytical definition: Set porosity f=0 in the Gurson yield function.
- Boundary conditions
- Required solver capability: gurson_porous_plasticity. Use the loading/path control stated in the setup and preserve the complete response history.
- Measured quantity
- At f=0 the yield condition reduces exactly to von Mises and is independent of hydrostatic pressure; positive f introduces the documented pressure sensitivity.
WebCAE Terminal
Paste these commands into the Terminal panel inside WebCAE. They use the same text DSL as the application; run one command per line:
units mm
material E=200000 nu=0.3 plastic=gurson sigmay=400 f0=0.0 q1=1.5 q2=1.0
fix surface number 1
load surface number 2 tension=400
solve nonlinear method=newton steps=20Results comparison
| Reference value | q_flow=400.0000 MPa (f=0, all p) |
| Our result | q_flow=400.0000 MPa (diff=0.000e+00) |
| Deviation | 0% |
| Tolerance | 5% |
| Status | PASS · 0% |
| Mesh details | Gurson model sigmay=400 MPa, zero porosity f=0, hydrostatic test sweep |
Updated: 2026-10-27 · version not recorded