A method for predicting the internal motion resistance of rubber-tracked undercarriages,Pt. 3. A research on bending resistance of rubber tracks |
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| Affiliation: | 1. Wrocław University of Science and Technology, Mechanical Faculty, The Department of Off-Road Machine and Vehicle Engineering, ul. Łukasiewicza 7/9, 50-371 Wrocław, Poland;2. IBAF-Institut für Baumaschinen, Antriebs- und Fördertechnik GmbH, Heinrichstraße 67, 44805 Bochum, Germany;3. Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum, Germany;1. Advanced Science and Automation Corp. 9714 Oakhaven Ct., Indianapolis, IN 46256-8101, USA;2. US Army DEVCOM Ground Vehicle Systems Center (GVSC), 6501 E. 11 Mile Road, MS 157, Bldg. 215, FCDD-GVR-MSS, Warren, MI 48397-5000, USA;1. Robotics Institute, Carnegie Mellon University, 5000 Forbes Ave, Pittsburgh, PA 15213, United States;2. National Robotics Engineering Center, 10 40th St, Pittsburgh, PA 15201, United States;2. OHB System, Manfred-Fuchs-Str. 1, Wessling, Germany;1. Advanced Science and Automation Corp., Indianapolis, IN, United States;2. US Army CCDC GVSC, Warren, MI, United States |
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| Abstract: | Optimizing the efficiency of rubber-tracked undercarriages requires models for calculating external and internal motion resistance, including the resistance resulting from bending of rubber tracks. The experiments on the bending resistance of rubber tracks and a new model of this phenomenon are discussed in this article. An empirical model of friction in bearings typically implemented in driving and idler wheels of rubber-tracked undercarriages is also presented. According to the sample computations carried out on the basis of these models, the efficiency of rubber-tracked undercarriages might be improved by minimizing the number and maximizing the diameter of idler wheels. Furthermore, it has been shown that increase in the initial tension and driving force transmitted by rubber tracks does not significantly affect bending resistance of these tracks; however, it results in increased friction in the driving and idler wheels’ bearings. Nevertheless, the higher the driving force transmitted by the rubber tracks, the higher the efficiency of rubber-tracked undercarriages. Consequently, since track systems of vehicles operating at relatively small drawbar pull will manifest exceptionally low efficiency, there is a serious need for optimizing them in terms of energy consumption. |
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| Keywords: | Tracked undercarriage Rubber track Internal motion resistance Undercarriage layout optimization Track bending Rubber hysteresis |
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