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ViscoplasticModel

oxiphysics_materials::creep::types

Struct ViscoplasticModel 

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pub struct ViscoplasticModel {
    pub yield_stress: f64,
    pub viscosity: f64,
    pub hardening: f64,
}
Expand description

Perzyna viscoplastic model.

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§yield_stress: f64

Initial yield stress (Pa)

§viscosity: f64

Viscosity parameter eta (Pa*s)

§hardening: f64

Isotropic hardening modulus H (Pa)

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impl ViscoplasticModel

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pub fn new(yield_stress: f64, viscosity: f64, hardening: f64) -> Self

Create a new ViscoplasticModel.

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pub fn overstress(&self, total_stress: f64, accumulated_plastic: f64) -> f64

Overstress function (Macaulay bracket).

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pub fn plastic_strain_rate(&self, stress: f64, plastic_strain: f64) -> f64

Plastic strain rate: eps_dot_p = (1/eta) * phi.

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pub fn step(&self, stress: f64, plastic_strain: f64, dt: f64) -> (f64, f64)

Explicit Euler step: returns (new_plastic_strain, new_accumulated_plastic).

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