Edinburgh-Elasto-Plastic-Adhesive (EEPA) contact model

Material subjected to relatively high loads (consolidation) may experience plastic deformation, resulting in increased contact area and increased cohesive behaviour. History dependent elasto-plastic-adhesive contact models can be used in DEM to simulate this behaviour. One such model is the Edinburgh-Elasto-Plastic-Adhesive (EEPA) contact model proposed by Morrissey (2013).

A linear and a non-linear version of the EEPA contact model are implemented for PFC version 6.0. These versions contain several slight differences with regard to the original model proposed by Morrissey (2013), as discussed in the User Guide. These models have been tested in PFC3D version 6.00.27, and not tested with PFC2D.

Non-linear EEPA model force-displacement relation in the normal direction

Keywords

  • PFC, EEPA, JKR, adhesion, cohesion, plasticity
Edinburgh-Elasto-Plastic-Adhesive (EEPA) contact model

UDM Version: 1
Release Date: Jan. 29, 2021

Category: Soil

Software:
  • PFC (PFC3D 6.0)
Download: User Guide: Contact: Developer:

Latest News
  • Itasca has announced the release of FLAC2D v9 Itasca has announced the release of FLAC2D v9, revolutionizing the way we analyze and predict...
    Read More
  • 6th Itasca Symposium on Applied Numerical Modeling The next Itasca Symposium will take place June 3 - 6, 2024, in Toronto, Canada....
    Read More
  • Itasca International Inc. announces the Selection of its New CEO Itasca International Inc. announces the Selection of its New CEO...
    Read More

Upcoming Events
29 May
Getting Started with FLAC2D/FLAC3D
Objectives of the training: •Understand the FLAC2D/ FLAC3D numerical approach and the types ofproblems it can solve•Know how to manipul... Read More
5 Jun.
IMAT Workshop
ITASCA is launching IMAT (Itasca's Mining Analysis Toolbox) our groundbreaking software tailored exclusively for underground and open p... Read More