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: 28-01-2021

Category: Soil

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

Últimas noticias
  • ITASCA Strengthens North American Delivery of Integrated Geomechanics and Hydrogeology Solutions Drawing on decades of geomechanical and hydrogeological expertise, ITASCA has announced the formation of ITASCA...
    Leer mas
  • Itasca has announced the release of FLAC2D v9 Itasca has announced the release of FLAC2D v9, revolutionizing the way we analyze and predict...
    Leer mas
  • Primer Anuncio 6º Simposio Itasca sobre Modelado Numérico Aplicado se llevará a cabo del 3 al 6...
    Leer mas

Próximos Eventos
15 sept.
ITASCA en EUROCK 2026: Impulsando la Innovación en Ingeniería de Rocas
ITASCA se complace en anunciar su participación en EUROCK 2026 – Simposio de la ISRM, que se llevará a cabo del 15 al 19 de septiembre ... Leer mas
20 sept.
ITASCA participará en la conferencia CouFrac 2026
ITASCA participará en CouFrac 2026, que se llevará a cabo del 20 al 23 de septiembre de 2026 en Uppsala, Suecia. La conferencia reúne a... Leer mas
26 oct.
ITASCA en Slope Stability 2026: Patrocinador Estratégico y Contribuyente Técnico
ITASCA se enorgullece de participar como Patrocinador Estratégico en Slope Stability 2026, uno de los simposios internacionales líderes... Leer mas