.. _R7.04.10:

**r7.04.10** Wear calculation operator
===========================================

**Summary:**

This note presents three laws of wear that make it possible to evaluate the worn volume based on the quantities resulting from a dynamic calculation performed with the operator DYNA_TRAN_MODAL [:external:ref:`U4.54.03 <U4.54.03>`] and the keyword CHOC.


* Archard's law,


* Law KWU_EPRI,


* Law EDF_MZ.

The wear coefficients required for these calculations are provided by the user or specified in a database.

From the worn volume and the geometry of the contact, it is possible to calculate the depth of wear for the mobile or its obstacle.

An angular division of the game pattern allows the operator to calculate the quantities relating to wear by sectors.

 **Table of Contents**




.. toctree::
    :hidden:

    self

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

    Introduction
    Lois_d_usure
    Base_de_donn_es
    Relation_entre_le_volume_us__et_la_profondeur_d_usure
    D_coupage_de_la_figure_de_jeu_en_secteurs
    Actualisation_de_la_table
    Bibliographie
    Description_des_versions_du_document