.. _R3.06.14:

**r3.06.14** Introduction to Hybrid High-Order Methods (HHO)
==============================================================

**Summary:**

This document presents HHO methods for problems in nonlinear mechanics (small and large deformations) and linear and non-linear thermal mechanics.
The corresponding keywords in :ref:`AFFE_MODELE <U4.41.01>` for mechanical models in *code_aster* are D_ PLAN_HHO and 3D_ HHO.
An extension to non-local formulations is possible (D_ PLAN_GRAD_HHO and 3D_ GRAD_HHO). For thermal, there are AXIS_HHO, PLAN_HHO and 3D_ HHO.
It is then necessary to choose between the formulations LINEAIRE and QUADRATIQUE.

More complete theoretical details are given in [:ref:`1 <Ref214268751>`] and [:ref:`9 <Ref214427356>`].

Table of contents




.. toctree::
    :hidden:

    self

.. toctree::
    :maxdepth: 2
    :numbered:

    Introduction
    Description_de_la_m_thode
    Impl_mentation
    Bibliographie