Struct VoigtTensor 

pub struct VoigtTensor;

Voigt notation utilities for symmetric 3×3 tensors.

Convention: [σ_xx, σ_yy, σ_zz, σ_xy, σ_yz, σ_xz] → indices 0..5.

Implementations

impl VoigtTensor

pub fn from_tensor2(t: &Tensor2) -> [f64; 6]

Convert a Tensor2 to its 6-component Voigt representation. Components: [0]=xx, [1]=yy, [2]=zz, [3]=xy, [4]=yz, [5]=xz.

pub fn to_tensor2(v: &[f64; 6]) -> Tensor2

Reconstruct a symmetric Tensor2 from a 6-component Voigt vector.

impl VoigtTensor

pub fn to_engineering_strain(v: &[f64; 6]) -> [f64; 6]

Convert strain in Voigt notation to engineering strain.

Engineering strain has shear components multiplied by 2: [eps_xx, eps_yy, eps_zz, 2eps_xy, 2eps_yz, 2*eps_xz].

pub fn from_engineering_strain(e: &[f64; 6]) -> [f64; 6]

Convert engineering strain back to tensor strain Voigt.

pub fn von_mises_voigt(v: &[f64; 6]) -> f64

Compute the von Mises stress from Voigt notation.

pub fn hydrostatic_pressure(v: &[f64; 6]) -> f64

Hydrostatic pressure from Voigt notation: p = -(v[0]+v[1]+v[2])/3.