Johnson-Kendall-Roberts (JKR) Contact Model

The contact theory developed by Johnson, Kendall and Roberts (Johnson et al., 1971) is known as the JKR model and is an extension of the well-known Hertz contact model.

The model accounts for attraction forces due to van-der-Waals effects. It can however be also used to model material where the adhesion is caused by capillary or liquid-bridge forces (Hærvig et al., 2017, Morrissey, 2013, Xia et al., 2019).

This implementation of a JKR model for PFC 6.0 has been tested in PFC3D Version 6.00.27, and not tested with PFC2D.

Normalised force and normalised contact patch radius of the JKR model as a function of normalised overlap

Keywords

  • cohesion, adhesion, JKR, van-der-Waals, PFC
Johnson-Kendall-Roberts (JKR) Contact Model

UDM Version: 1
Release Date: 28 Jan 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
25 Feb
Débuter avec FLAC2D/FLAC3D
This training is an introduction to continuous modeling with FLAC2D and FLAC3D. At the end of the course, participants will master the ... Read More
11 Mar
Débuter avec 3DEC
Objectives of the training: Understand the 3DEC numerical approach and the types of problems it can solveKnow how to manipulate the 3DE... Read More
26 Mar
Python in Itasca Software
This course provides an overview of the Python programming language in Itasca software.The course covers major applications of Python t... Read More