Hencky

ConstitutiveModels.helmholtz_free_energyMethod

$\psi = \frac{1}{2}\kappa tr\left(\mathbf{E}\right)^2 + \mu\mathbf{E_0}:\mathbf{E_0}$

helmholtz_free_energy(
    _::Hencky,
    props,
    Δt,
    ∇u::Tensors.Tensor{2, 3, T<:Number, 9},
    θ,
    Z_old,
    Z_new
) -> Any
source
ConstitutiveModels.pk1_stressMethod
pk1_stress(
    model::Hencky,
    props,
    Δt,
    ∇u::Tensors.Tensor{2, 3, T<:Number, 9},
    θ,
    Z_old,
    Z_new,
    _::ConstitutiveModels.ForwardDiffAD
) -> Any
source