Struct SMAPseudoelasticity 

pub struct SMAPseudoelasticity {
    pub sigma_f: f64,
    pub sigma_r: f64,
    pub epsilon_l: f64,
    pub e_a: f64,
}

Pseudoelastic (superelastic) behaviour of a shape memory alloy.

Describes the stress-strain loop with forward and reverse transformation plateau stresses and the resulting hysteresis.

Fields

sigma_f: f64

Upper plateau (loading) stress in Pa.

sigma_r: f64

Lower plateau (unloading) stress in Pa.

epsilon_l: f64

Maximum transformation strain ε_L.

e_a: f64

Elastic modulus (austenite) in Pa.

Implementations

impl SMAPseudoelasticity

pub fn new(sigma_f: f64, sigma_r: f64, epsilon_l: f64, e_a: f64) -> Self

Create a pseudoelastic model.

pub fn nitinol_room_temp() -> Self

Standard Nitinol pseudoelastic parameters at 310 K.

pub fn loading_plateau_stress(&self) -> f64

Forward transformation (loading) plateau stress in Pa.

pub fn unloading_plateau_stress(&self) -> f64

Reverse transformation (unloading) plateau stress in Pa.

pub fn hysteresis_area(&self) -> f64

Mechanical energy dissipated per cycle (hysteresis area) in J/m³.

Area of the stress-strain hysteresis loop: W = (σ_f − σ_r) · ε_L

pub fn loading_response(&self, eps: f64) -> f64

Stress-strain response during loading at fractional strain eps / eps_L.

Returns stress in Pa. Assumes linear elastic loading up to σ_f, then a flat plateau at σ_f until full transformation.

pub fn unloading_response(&self, eps: f64) -> f64

Stress-strain response during unloading from full transformation.

Returns stress in Pa.

Trait Implementations

impl Clone for SMAPseudoelasticity

fn clone(&self) -> SMAPseudoelasticity

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SMAPseudoelasticity

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

Formats the value using the given formatter.