belfem::material::BhSplineCurve Class Reference

#include <cl_Material_BhSplineCurve.hpp>

Inheritance diagram for belfem::material::BhSplineCurve:

Collaboration diagram for belfem::material::BhSplineCurve:

Public Member Functions
	BhSplineCurve (const string &aPath, const string &aLabel)
	~BhSplineCurve () override
real	nu (const real B) const override
	Reluctivity ν(B) = H/B.
real	mu (const real H) const override
	Permeability μ(H) = B/H.
void	dmudH (const real H, real &mu, real &dmudH) const override
	Permeability and its derivative with respect to H.
Public Member Functions inherited from belfem::material::BhCurve
	BhCurve (const string &aPath, const string &aLabel)
	Constructor - records the database path and group label.
virtual	~BhCurve ()=default
	Virtual destructor ( the concrete curve owns and deletes its splines ).
real	B (const real H) const
	Magnetic flux density from field intensity.
real	H (const real B) const
	Magnetic field intensity from flux density.

Additional Inherited Members
Protected Attributes inherited from belfem::material::BhCurve
const proc_t	mCommRank
	MPI rank.
const string	mPath
	path where data file is located
const string	mLabel
	Material label for error messages.

Constructor & Destructor Documentation

BhSplineCurve()

belfem::material::BhSplineCurve::BhSplineCurve	(	const string &	aPath,
		const string &	aLabel )

~BhSplineCurve()

belfem::material::BhSplineCurve::~BhSplineCurve ( )

override

Member Function Documentation

dmudH()

void belfem::material::BhSplineCurve::dmudH ( const real H, real & mu, real & dmudH ) const

inlineoverridevirtual

Permeability and its derivative with respect to H.

Parameters

	H	Magnetic field intensity magnitude [A/m]
[out]	mu	Permeability μ(H) [T·m/A]
[out]	dmudH	Derivative dμ/dH [T·m/A²]

Computes both μ and dμ/dH efficiently for Newton-Raphson iterations in nonlinear magnetic FEM solvers.

For H < Hsat: Uses spline evaluation and derivative For H ≥ Hsat: Analytical formulas for linear regime

Reimplemented from belfem::material::BhCurve.

mu()

real belfem::material::BhSplineCurve::mu ( const real H ) const

inlineoverridevirtual

Permeability μ(H) = B/H.

Parameters

H	Magnetic field intensity magnitude [A/m]

Returns

Permeability μ [T·m/A]

For H < Hsat: Uses cubic spline interpolation For H ≥ Hsat: Returns μ₀·(1 + Msat/H)

Reimplemented from belfem::material::BhCurve.

nu()

real belfem::material::BhSplineCurve::nu ( const real B ) const

inlineoverridevirtual

Reluctivity ν(B) = H/B.

Parameters

B	Magnetic flux density magnitude [T]

Returns

Reluctivity ν [A/(T·m)]

For B < Bsat: Uses cubic spline interpolation For B ≥ Bsat: Returns ν₀ - Msat/B (linear + offset)

Reimplemented from belfem::material::BhCurve.

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The documentation for this class was generated from the following files:

• src/physics/materials/cl_Material_BhSplineCurve.hpp
• src/physics/materials/cl_Material_BhSplineCurve.cpp