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 [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

• 1. Introduction
• 2. Laws of wear
  • 2.1. Law of usury “ARCHARD”
  • 2.2. Law of usury “KWU_EPRI”
  • 2.3. Law of usury “EDF_MZ”
• 3. Database
• 4. Relationship between worn volume and depth of wear
  • 4.1. Situation “GRAPPE - ALESAGE”
  • 4.2. Situation “GRAPPE - ENCOCHE SIMPLE”
  • 4.3. Situation “GRAPPE - ENCOCHE DOUBLE”
  • 4.4. Situation “Steam generator tube - Antivibration bar”
  • 4.5. Situation “Steam generator tube - bore”
  • 4.6. Situation “Steam generator tube - Trifoliate”
  • 4.7. Situation “Steam generator tube - Quadrifoliate”
  • 4.8. Situation “Steam generator tube - Steam generator tube”
• 5. Dividing the game figure into sectors
• 6. Refreshing the table
• 7. Bibliography
• 8. Description of document versions