Title :

A Multiscale Numerical Model for Structures with Internal Frictional Contacts

Author(s) :

Truyaert, Kevin [Auteur]
Catholic University of Leuven - Katholieke Universiteit Leuven [KU Leuven]
Aleshin, Vladislav [Auteur]
Acoustique Impulsionnelle & Magnéto-Acoustique Non linéaire - Fluides, Interfaces Liquides & Micro-Systèmes - IEMN [AIMAN-FILMS - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Delrue, Steven [Auteur]
Catholic University of Leuven - Katholieke Universiteit Leuven [KU Leuven]
van den Abeele, Koen [Auteur]
Catholic University of Leuven - Katholieke Universiteit Leuven [KU Leuven]

Conference title :

1st International Conference on Numerical Modelling in Engineering

City :

Ghent

Country :

Belgique

Start date of the conference :

2018

Publication date :

2019-08-29

English keyword(s) :

Computational modeling
Contact mechanics
Method of memory diagrams
Acoustic wave propagation
Thermosonics

HAL domain(s) :

Physique [physics]/Mécanique [physics]/Acoustique [physics.class-ph]
Physique [physics]/Mécanique [physics]/Mécanique des solides [physics.class-ph]

English abstract : [en]

AbstractMany engineering applications are related to or deal with materials and systems having internal frictional contacts in their structure. The effects induced by these contacts, such as friction-induced heat generation, ...
Show more >AbstractMany engineering applications are related to or deal with materials and systems having internal frictional contacts in their structure. The effects induced by these contacts, such as friction-induced heat generation, wear, nonlinear vibrations, etc., can be significant and cannot be ignored in numerical models. However, friction models are computationally cumbersome because they often require implicit data exchange procedures to describe the contact evolution. Moreover, detailed meshing of the contact zone is needed to cover the microgeometry (roughness). Here, an alternative model is proposed, based on a semi-analytical method of contact mechanics, called the Method of Memory Diagrams (MMD), that allows for an automated explicit calculation of the hysteretic frictional contact response. The key strength of the method is that it uses a multiscale approach in which mesoscopic cells, containing a section of the frictional contact, are introduced to resolve the stress and displacement fields at the contact interface into a single load-displacement relationship. Hence, the essential constitutive information of the contact is supplied to the macroscale model by the mesoscopic cells, drastically simplifying the account for rough contacts and avoiding microscopic meshing of the contact geometry. The MMD contact model is directly integrated into a Finite Element Modeling (FEM) environment enabling the study of the dynamic behavior of structures with frictional interfaces. The potential of the proposed model for engineering applications will be demonstrated by simulating the contact behavior of a dynamically excited frictional contact and by linking this behavior to friction-induced effects such as nonlinear vibrations and heat production.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL