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UDM-Bibliothek

Johnson-Kendall-Roberts (JKR) Contact Model

Software

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: 28.01.2021

Category: Soil

Software:
  • PFC (PFC3D 6.0)
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