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Simulation models of test equipment for measuring transient friction in a rolling and sliding contact
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Machine Elements.ORCID iD: 0000-0003-4461-0209
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Machine Elements.
2005 (English)In: Proceedings of OST ’05 Symposium On Machine Design, 2005Conference paper, Published paper (Refereed)
Abstract [en]

This paper investigates how a model for boundary lubricated rolling and sliding contacts can be integrated in a dynamic rigid body model of a mechanical system in order to improve the accuracy of simulations of system behavior. The system modeled is test equipment for the measurement of transient friction in rolling sliding contact between two discs. Two different models of the system were constructed: one neglecting the rolling and sliding contact and the other integrating it in the system model. In the integrated contact model, the pressure distribution was computed using an elastic foundation model. A brush model was used for the friction calculation. Simulations were performed with both models and validated by experiments. The results show that the contact needs to be included in the model in order to capture the behavior of the system. Since the contact model used can handle both microslip and gross slip, it is applicable to a wide range of contact conditions.

Place, publisher, year, edition, pages
2005.
Keyword [en]
simulation, rolling and sliding contact, friction
National Category
Other Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-5772OAI: oai:DiVA.org:kth-5772DiVA: diva2:10262
Conference
OST ’05 SYMPOSIUM ON MACHINE DESIGN, October 20-21, 2005 in Stockholm, Sweden
Note

QC 20101129

Available from: 2006-05-22 Created: 2006-05-22 Last updated: 2016-04-22Bibliographically approved
In thesis
1. On interface modeling  with emphasis on friction
Open this publication in new window or tab >>On interface modeling  with emphasis on friction
2006 (English)Licentiate thesis, comprehensive summary (Other scientific)
Abstract [en]

The general trend toward increased use of computer models and simulations during product development has led to a need for accurate and reliable product models. The function of many products relies on contact interfaces between interacting components. To simulate the behavior of such products, accurate models of both components and interfaces are required. Depending on the purpose of the simulation, interface models of different degrees of complexity are needed. In simulation of very large systems with many interfaces, it might be computationally expensive to integrate detailed models of each individual interface. Condensed models, or abstractions, that describe the interface properties with a minimum of degrees of freedom are therefore required.

This thesis deals with mechanical interfaces with an emphasis on friction. In the four appended papers friction models are discussed in terms of condensed models, as well as in terms of more detailed contact models. The aim is to study how friction can be modeled in behavioral simulation of products and to discuss the convenience and relevance of using different types of friction models as building blocks of a system model in behavioral simulations.

Paper A presents a review of existing condensed friction models for sliding contacts under different running conditions and discusses the models from both simulation and tribological points of view.

In papers B and C a simplified contact model, called the elastic foundation model, is used to model friction in a boundary-lubricated rolling and sliding contact. The model is integrated in a dynamic rigid body model of a mechanical system, the system behavior is simulated, and the result is compared with experimental results.

Paper D discusses the application of the elastic foundation model to rough surface contact problems and investigates how the error in the elastic foundation results depends on surface roughness.

Place, publisher, year, edition, pages
Stockholm: KTH, 2006. 14 p.
Series
Trita-MMK, ISSN 1400-1179 ; 2006:08
Keyword
interface model, contact, friction, simulation, system behaviour, surface roughness, elastic foundation
National Category
Other Materials Engineering
Identifiers
urn:nbn:se:kth:diva-3986 (URN)
Presentation
2006-05-19, Seminarierum A425, KTH, Brinellvägen 83, Stockholm, 09:00
Opponent
Supervisors
Note
QC 20101129Available from: 2006-05-22 Created: 2006-05-22 Last updated: 2010-11-29Bibliographically approved

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