Struct Feti 

pub struct Feti {
    pub formulation: Formulation,
    pub method: KrylovMethod,
    pub partition: Partition,
    pub preconditioner: Preconditioner,
    pub rel_tol: Scalar,
}

FETI-DP solver for the linearized systems of a decomposable block.

The block is split by a Partition, and each subdomain is solved independently, tied together through the corner DOFs and Lagrange multipliers on the interface. Any elastic block is supported. The tangent need not be symmetric, but then the dual solve must be GMRES, since conjugate gradients, the default, needs a symmetric positive definite dual operator, and is what refuses a tangent that is not.

Only zero-displacement boundary conditions are supported. At least enough DOFs must be pinned to remove every rigid-body mode of the whole block.

As the linear solver of a NewtonRaphson, it works with a fixed equality constraint only, whose fixed DOFs are the pinned ones.

Fields

formulation: Formulation

method: KrylovMethod

partition: Partition

preconditioner: Preconditioner

rel_tol: Scalar

Implementations

impl Feti

pub fn solve<B>( &self, block: &B, nodal_coordinates: &NodalCoordinates<3>, boundary_conditions: &BoundaryConditions, ) -> Result<Vector, SolveError>

where B: DecomposableElements,

Trait Implementations

impl Clone for Feti

fn clone(&self) -> Feti

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Feti

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

Formats the value using the given formatter.

impl Default for Feti

Available on crate feature fem only.

fn default() -> Self

Returns the “default value” for a type.

impl LinearSolver for Feti

Available on crate feature fem only.

type Tangent = ElementSystems

The tangent this solver works from.

fn solve( &self, tangent: ElementSystems, retained: &[usize], _residual: &Vector, ) -> Result<Vector, String>

The decrement over the retained variables, given the tangent at the current state and the residual over those variables.