{
 "title": "Yeoh block in uniaxial tension",
 "kind": "theory",
 "source": "Uniaxial tension of the decoupled compressible Yeoh energy W = C₁₀ (Ī₁ − 3) + C₂₀ (Ī₁ − 3)² + C₃₀ (Ī₁ − 3)³ + κ/2 (J − 1)² (O. H. Yeoh, Rubber Chem. Technol. 66(5):754–771, 1993): σ = (λ/J) ∂W/∂λ with the lateral stretch found so σ_yy = 0 (bisection; E = 3, ν = 0.49, C₁₀ = μ/2, C₂₀ = −0.02, C₃₀ = 0.004)",
 "quantities": [
  {
   "id": "sigma",
   "quantity": "axial Cauchy stress, stretch λ = 2",
   "measure": {
    "command": "solve.probe",
    "params": {
     "step": "Uniaxial",
     "at": [
      [
       1,
       1,
       1
      ]
     ]
    },
    "pointer": "/nodes/0/stress/0"
   },
   "value": 3.174263919393508,
   "tolerance": {
    "relative": 1e-06
   },
   "reason": "a homogeneous deformation the hybrid hex20 represents exactly: the tolerance admits the Newton tolerance and rounding"
  },
  {
   "id": "lateral",
   "quantity": "lateral displacement at (1, 1, 1): l − 1",
   "measure": {
    "command": "solve.probe",
    "params": {
     "step": "Uniaxial",
     "at": [
      [
       1,
       1,
       1
      ]
     ]
    },
    "pointer": "/nodes/0/displacement/1"
   },
   "value": -0.2854505757255106,
   "tolerance": {
    "relative": 1e-06
   },
   "reason": "a homogeneous deformation the hybrid hex20 represents exactly: the tolerance admits the Newton tolerance and rounding"
  }
 ]
}