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- W2015775898 abstract "Abstract The dynamic behavior of gear trains is very often dominated by a rattling motion of teeth within the backlash. Because of the excited noise it is often referred to as gear hammering. It mainly originates from high dynamic loads of gas forces and auxiliary devices that usually exceed the nominal torque by far. Of course, the knowledge of the resulting contact forces is very important for the design. Since measurement of contact forces is complicated and expensive, the precise simulation of contact forces and the arising dynamic behavior of the complete gear trains is very important. Typically, gear wheels are modelled as rigid bodies, coupled by spring‐damper combinations. In this paper we show that this assumption may not hold for impact‐like contacts as they often occur in gear trains and may even be wrong for very compliant gear bodies as they are often used in gear trains. We present very detailed finite element analyses for impacts in a gear pair of a real gear train and compare the results to a rigid body model. The differences emerge from dynamic gear body effects, and an elastic description of the gear wheels is necessary to precisely simulate gear forces. In order to be able to use a fully elastic approach to simulate the contacts between gear wheels, a modal approach with a collision detection and a local force description is used. This approach allows simulations nearly as precise as finite element simulations but with a simulation time of more than a factor 1000 faster. This allows the transient simulation of many contacts and many rotations using a fully elastic model. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)" @default.
- W2015775898 created "2016-06-24" @default.
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- W2015775898 date "2007-12-01" @default.
- W2015775898 modified "2023-09-24" @default.
- W2015775898 title "Hammering of gear wheels" @default.
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- W2015775898 doi "https://doi.org/10.1002/pamm.200700655" @default.
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