Construction of a transient model for a Class 8 tractor-trailer negotiating mountain terrain is presented. Four basic brake models for free and forced cooling (GSRS, UMTRI, Limpert, and HVE Brake Designer) are converted to consistent units. The units have been reduced to those accepted variables in the thermodynamic/heat transfer literature (hc, A, cp, M), thereby facilitating model comparison and coefficient selection from the published literature. The data has been compared to real test published data. After comparison of the models for free and forced cooling through accepted thermodynamic and heat transfer variables, there was reasonable correlation between models. In addition, the models were shown to be an excellent tool for safety experts, highway designers, and accident reconstructionists to evaluate the effects of vehicle parameters on brake drum temperature. This was explored through varying vehicle speed, weight, brake adjustment, and downhill slope. The integration of all these strategies into an Microsoft Excel spreadsheet model provides a quick and easy to use tool for engineers and non-engineers alike.
Usable models for free and forced cooling of commercial vehicle drum brakes
Anwenderfreundliche Modelle für Nutzfahrzeug-Trommelbremsen mit freier und erzwungener Kühlung
2006
14 Seiten, 20 Bilder, 14 Quellen
Conference paper
English
Usable Models for Free and Forced Cooling of Commercial Vehicle Drum Brakes
SAE Technical Papers | 2006
|2006-01-3557 Usable Models for Free and Forced Cooling of Commercial Vehicle Drum Brakes
British Library Conference Proceedings | 2006
|Engineering Index Backfile | 1950
Engineering Index Backfile | 1934