Struct HashinFailureCriteria 

pub struct HashinFailureCriteria {
    pub x_t: f64,
    pub x_c: f64,
    pub y_t: f64,
    pub y_c: f64,
    pub s12: f64,
}

Hashin failure criteria for unidirectional fiber composites.

Four independent failure modes:

1. Fiber tension (σ_1 > 0)
2. Fiber compression (σ_1 < 0)
3. Matrix tension (σ_2 > 0)
4. Matrix compression (σ_2 < 0)

Reference: Hashin (1980).

Fields

x_t: f64

Longitudinal tensile strength X_T [Pa].

x_c: f64

Longitudinal compressive strength X_C [Pa].

y_t: f64

Transverse tensile strength Y_T [Pa].

y_c: f64

Transverse compressive strength Y_C [Pa].

s12: f64

In-plane shear strength S_12 [Pa].

Implementations

impl HashinFailureCriteria

pub fn new(x_t: f64, x_c: f64, y_t: f64, y_c: f64, s12: f64) -> Self

Create a new Hashin failure criteria instance.

pub fn fiber_tension(&self, sigma1: f64, tau12: f64, _tau13: f64) -> f64

Fiber tension criterion: f_ft = (σ_1/X_T)^2 + (τ_12/S_12)^2.

pub fn fiber_compression(&self, sigma1: f64) -> f64

Fiber compression criterion: f_fc = (σ_1/X_C)^2.

pub fn matrix_tension(&self, sigma2: f64, tau12: f64) -> f64

Matrix tension criterion: f_mt = (σ_2/Y_T)^2 + (τ_12/S_12)^2.

pub fn matrix_compression(&self, sigma2: f64, tau12: f64) -> f64

Matrix compression criterion (Hashin 1980):

f_mc = (σ_2 / (2·S_23))^2 + [(Y_C / (2·S_23))^2 - 1]·(σ_2/Y_C) + (τ_12/S_12)^2

pub fn is_failed(&self, sigma1: f64, sigma2: f64, tau12: f64) -> bool

Check if any failure mode is triggered (criterion ≥ 1).

Trait Implementations

impl Clone for HashinFailureCriteria

fn clone(&self) -> HashinFailureCriteria

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HashinFailureCriteria

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

Formats the value using the given formatter.