Bond Graph Elements and Structures for Tribology

摘要

Tribology, the interdisciplinary study of contact, friction, lubrication, and wear, often involves coupled dynamics between several disciplines. For these problems, bond graphs are a natural fit. Machine systems employ tribology components to facilitate and guide moving parts such as bearings, gears, brakes, and lubricated devices. These devices involve surfaces in contact and/or relative motion, which feature dynamics from multiple physics disciplines. Of interest to bond graphers are the unusual dynamic structures that arise from the device constitutive laws. Contact devices have constitutive laws which lead to unusual multi-port bond graph elements, such as a multi-port RC element, that both stores energy and dissipates power. This paper considers the dynamics of stick slip processes (such as the dynamics that result in squeaky shoes or brake squeal), journal bearings, and gear contacts.