Struct RockfillModel 

pub struct RockfillModel {
    pub k_modulus: f64,
    pub n_exponent: f64,
    pub rf: f64,
    pub cohesion: f64,
    pub friction_angle: f64,
    pub pa: f64,
}

Rockfill and embankment dam core material model (Duncan-Chang hyperbolic).

Fields

k_modulus: f64

Tangential modulus number K [-].

n_exponent: f64

Modulus exponent n [-].

rf: f64

Failure ratio Rf [-] (≈ 0.7–0.9).

cohesion: f64

Cohesion c [Pa].

friction_angle: f64

Friction angle φ [radians].

pa: f64

Atmospheric pressure pa [Pa].

Implementations

impl RockfillModel

pub fn new( k_modulus: f64, n_exponent: f64, rf: f64, cohesion: f64, friction_angle_deg: f64, ) -> Self

Create a new rockfill model.

pub fn hard_quartzite_rockfill() -> Self

Typical hard rockfill (quartzite).

pub fn initial_tangent_modulus(&self, sigma3: f64) -> f64

Initial tangent modulus Ei [Pa] (Duncan-Chang).

Ei = K * pa * (σ3/pa)^n

pub fn deviatoric_stress_at_failure(&self, sigma3: f64) -> f64

Deviatoric stress at failure (Mohr-Coulomb).

(σ1 - σ3)_f = 2*(ccos(φ) + σ3sin(φ)) / (1 - sin(φ))

pub fn tangent_modulus(&self, sigma1: f64, sigma3: f64) -> f64

Tangent modulus Et [Pa] from current stress ratio.

Et = Ei * (1 - Rf * (σ1 - σ3) / (σ1 - σ3)_f)^2

Trait Implementations

impl Clone for RockfillModel

fn clone(&self) -> RockfillModel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RockfillModel

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

Formats the value using the given formatter.