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Extends Magnetic model for 2D and 3D #38

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Merged
jmartfrut merged 1 commit into from
Oct 23, 2025
Merged

Extends Magnetic model for 2D and 3D #38

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2 changes: 1 addition & 1 deletion src/PhysicalModels/MagneticModels.jl
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Expand Up @@ -19,7 +19,7 @@ function (obj::Magnetic)(Λ::Float64=1.0)
# Energy #
Ψmm(ℋ₀, N) = (-μ / 2.0) * ((ℋ₀ + ℋᵣ(N)) ⋅ (ℋ₀ + ℋᵣ(N))) * (1 + χe)
∂Ψmm_∂φ(ℋ₀, N) = (-μ) * (ℋ₀ + ℋᵣ(N)) * (1 + χe)
∂Ψmm_∂φφ(ℋ₀, N) = (-μ) * I3 * (1 + χe)
∂Ψmm_∂φφ(ℋ₀, N) = (-μ) * Id(N) * (1 + χe)
return (Ψmm, ∂Ψmm_∂φ, ∂Ψmm_∂φφ)
end

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2 changes: 1 addition & 1 deletion src/TensorAlgebra/Operations.jl
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@@ -1,4 +1,4 @@


function (*)(Ten1::TensorValue, Ten2::VectorValue)
return (⋅)(Ten1, Ten2)
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2 changes: 2 additions & 0 deletions src/TensorAlgebra/TensorAlgebra.jl
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Expand Up @@ -22,6 +22,8 @@ export I3
export I9
export I2
export I4
export Id

export logreg
export Tensorize
export δᵢⱼδₖₗ2D
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14 changes: 14 additions & 0 deletions src/TensorAlgebra/TensorsDefinitions.jl
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Expand Up @@ -38,6 +38,20 @@ Identity fourth-order tensor 3D
const I9 = I_(9)



function Id(A::VectorValue{2, Float64})
return I2
end

function Id(A::VectorValue{3, Float64})
return I3
end

function Id(A::VectorValue{4, Float64})
return I4
end


# =====================
# Delta Kronecker
# =====================
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25 changes: 24 additions & 1 deletion test/TestConstitutiveModels/PhysicalModelTests.jl
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Expand Up @@ -507,7 +507,7 @@ end
end


@testset "Magnetic" begin
@testset "Magnetic3D" begin
∇φ = VectorValue(1.0, 2.0, 3.0)
a=40e-3
ra=Ref(a)
Expand All @@ -529,6 +529,29 @@ end



@testset "Magnetic2D" begin
∇φ = VectorValue(1.0, 2.0)
a=40e-3
ra=Ref(a)
modelID = Magnetic(μ=1.2566e-6, αr=ra ,χe=0.0)
Ψ, ∂Ψφ, ∂Ψφφ = modelID()
H0 = get_Kinematics(modelID.Kinematic)
N = VectorValue(0.0, 0.0)

# ∂Ψφ_(H) =VectorValue(ForwardDiff.gradient(x -> Ψ( x,get_array(N) ), get_array(H)))
# ∂Ψφφ_(H) =TensorValue(ForwardDiff.jacobian(x -> ∂Ψφ( x,get_array(N) ), get_array(H)))

# norm(∂Ψφ_(H0(∇φ))) - norm(∂Ψφ( H0(∇φ), N))
# norm(∂Ψφφ_(H0(∇φ))) -norm(∂Ψφφ(H0(∇φ), N))

@test Ψ(H0(∇φ),N) == -3.1415e-6
@test norm(∂Ψφ(H0(∇φ),N)) == 2.8098430205262357e-6
@test norm(∂Ψφφ(H0(∇φ),N)) == 2.1764950447910513e-6
end




@testset "IdealMagnetic_SoftMaterial2D" begin

∇u = TensorValue(1.0, 2.0, 3.0, 4.0) * 1e-3
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