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A Second-Order Dynamic Friction Model Compared to Commercial Stick–Slip Models

  • Friction has long been an important issue in multibody dynamics. Static friction models apply appropriate regularization techniques to convert the stick inequality and the non-smooth stick–slip transition of Coulomb’s approach into a continuous and smooth function of the sliding velocity. However, a regularized friction force is not able to maintain long-term stick. That is why dynamic friction models were developed in recent decades. The friction force depends herein not only on the sliding velocity but also on internal states. The probably best-known representative, the LuGre friction model, is based on a fictitious bristle but realizes a too-simple approximation. The recently published second-order dynamic friction model describes the dynamics of a fictitious bristle more accurately. It is based on a regularized friction force characteristic, which is continuous and smooth but can maintain long-term stick due to an appropriate shift in the regularization. Its performance is compared here to stick–slip friction models, developed and launched not long ago by commercial multibody software packages. The results obtained by a virtual friction test-bench and by a more practical festoon cable system are very promising. Thus, the second-order dynamic friction model may serve not only as an alternative to the LuGre model but also to commercial stick–slip models.

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Metadaten
Author:Georg RillORCiDGND, Matthias Schuderer
DOI:https://doi.org/10.3390/modelling4030021
ISSN:2673-3951
Parent Title (English):Modelling
Publisher:MDPI
Document Type:Article
Language:English
Year of first Publication:2023
Release Date:2023/10/17
Tag:commercial stick–slip friction models; dynamic friction model; long-term stick; multibody dynamics
Volume:4
Issue:3
First Page:366
Last Page:381
Note:
Corresponding author: Georg Rill
Institutes:Fakultät Maschinenbau
Begutachtungsstatus:peer-reviewed
OpenAccess Publikationsweg:Gold Open Access- Erstveröffentlichung in einem/als Open-Access-Medium
Corresponding author der OTH Regensburg
research focus:Energie und Mobilität
Licence (German):Creative Commons - CC BY - Namensnennung 4.0 International