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
  • International Slope Stability 2022 Itasca is proud to be a Diamond sponsor of Slope Stability 2022 (October 17-21 |...
    Read More
  • Charles Fairhurst Rotunda Dedication On August 26, family, friends, University of Minnesota staff and students, and Itascans gathered to...
    Read More
  • Software Benchmark Tests To help with your hardware configuration decisions, Itasca has created an online benchmark speed test...
    Read More

Upcoming Events
13 Mar
3DEC In-Person Introductory course
Live in-person introductory training course in Minneapolis, Minnesota. This course provides an overview of the capabilities and feature... Read More
27 Mar
FLAC3D In-Person Introductory Course
Live in-person introductory training course. This 3-day course provides general feature training addressing basic concepts and recommen... Read More
30 Mar
Griddle In-Person Introductory Course
Live in-person introductory training course. This course provides an overview of the capabilities and features of Rhino3D CAD software ... Read More