Struct MagneticShape 

pub struct MagneticShape {
    pub max_strain: f64,
    pub k_u: f64,
    pub m_sat: f64,
    pub h_critical: f64,
    pub eta: f64,
    pub elastic_modulus: f64,
}

Magnetic shape memory effect in Heusler alloys (Ni-Mn-Ga).

Models variant reorientation driven by magnetic field via energy minimization. Strain output up to ~12 % for Ni2MnGa.

Fields

max_strain: f64

Maximum transformation strain ε_max.

k_u: f64

Magnetic anisotropy energy density K_u [J/m³].

m_sat: f64

Saturation magnetization M_s [A/m].

h_critical: f64

Critical field for reorientation H_cr [A/m].

eta: f64

Current variant fraction η ∈ [0, 1].

elastic_modulus: f64

Elastic modulus [Pa].

Implementations

impl MagneticShape

pub fn new( max_strain: f64, k_u: f64, m_sat: f64, h_critical: f64, elastic_modulus: f64, ) -> Self

Create a magnetic shape memory material.

pub fn ni2mnga() -> Self

Standard Ni2MnGa model.

pub fn zeeman_energy(&self, h_field: f64, eta: f64) -> f64

Zeeman energy density at field H (field along easy axis) [J/m³].

pub fn anisotropy_energy(&self, eta: f64) -> f64

Anisotropy energy density [J/m³].

pub fn update(&mut self, h_field: f64)

Update variant fraction η from applied field H [A/m].

pub fn strain(&self) -> f64

Macroscopic strain at current η.

pub fn blocking_stress(&self) -> f64

Blocking stress (stress required to prevent strain) [Pa].

Trait Implementations

impl Clone for MagneticShape

fn clone(&self) -> MagneticShape

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MagneticShape

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Copy for MagneticShape