dc.contributor.author Tan, Li en_US dc.date.accessioned 2018-09-11T08:00:26Z dc.date.available 2018-09-11T08:00:26Z dc.date.issued 2018-09-10 en_US dc.identifier.other vt_gsexam:17054 en_US dc.identifier.uri http://hdl.handle.net/10919/84991 dc.description.abstract Timing belt systems, usually consisting of a toothed belt and multiple pulleys, are used in many mechanical devices, especially in the internal combustion engine to synchronize the rotation of the crankshafts and the camshafts. When the system operates, the belt teeth will be transmitted by the pulley teeth meshed with them. Timing belt drives can make sure that the engine' s valves open and close properly due to their precise transmission ratio. In this thesis, a quasi-static computational model is developed to calculate the belt load distributions and the torques around pulleys for different timing belt systems. The simplest system is a two-pulley system with one oval pulley and one circular pulley. This computational model is then extended to a two-pulley system with one special-shaped pulley and finally generalized to determine the load conditions for a multi-pulley system with multiple special-shaped pulleys. Belt tooth deflections, tooth loads, belt tension distributions, friction forces, and the effect of friction hysteresis have been taken into consideration. Results of these quantities are solved by a nested numerical iteration method. Periodic torques generated by the varied radius of noncircular pulley are calculated by this computational model to cancel the undesired external cyclic torque, which will increase the life of timing belts. en_US dc.format.medium ETD en_US dc.publisher Virginia Tech en_US dc.rights This item is protected by copyright and/or related rights. Some uses of this item may be deemed fair and permitted by law even without permission from the rights holder(s), or the rights holder(s) may have licensed the work for use under certain conditions. For other uses you need to obtain permission from the rights holder(s). en_US dc.subject Timing Belt en_US dc.subject Non-circular Pulley en_US dc.subject Torque. en_US dc.title A Computational Iteration Method to Analyze Mechanics of Timing Belt Systems with Non-Circular Pulleys en_US dc.type Thesis en_US dc.contributor.department Mechanical Engineering en_US dc.description.degree Master of Science en_US thesis.degree.name Master of Science en_US thesis.degree.level masters en_US thesis.degree.grantor Virginia Polytechnic Institute and State University en_US thesis.degree.discipline Mechanical Engineering en_US dc.contributor.committeechair Parker, Robert G. en_US dc.contributor.committeemember Zuo, Lei en_US dc.contributor.committeemember Sandu, Corina en_US
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