000015865 001__ 15865
000015865 005__ 20161115135332.0
000015865 04107 $$aeng
000015865 046__ $$k2013-06-12
000015865 100__ $$aSugiyama, H.
000015865 24500 $$aNumerical Procedure for Gear Dynamics Simulation of Wind Energy Drivetrain Using Tabular Contact Search

000015865 24630 $$n34.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000015865 260__ $$bNational Technical University of Athens, 2013
000015865 506__ $$arestricted
000015865 520__ $$2eng$$aAccurate prediction of dynamic load variations in a wind turbine gearbox is crucial for its design and performance evaluation [1]. In particular, due to the high gear ratio and the large torque and speed variations of the input shaft connected to rotor blades, gears are subjected to severe contact and it is reported that 20-year design life of the drivetrain is often hard to achieve [2]. In this investigation, a numerical procedure for the analysis of multibody wind energy drivetrain model, which considers the effect of micro-geometry of a gear pair on the dynamic transmission error, is developed. In order to parameterize the gear tooth profile, two surface parameters are introduced as shown in Fig. 1 and the location of contact point on the arbitrary surface can then be defined using the surface parameters. The gear tooth profile function can be provided by either analytical or tabular form with the three- layer smoothing spline function for accurately obtaining its higher order derivatives. Despite the accurate surface representation used in the model, use of the online contact detection that involves multi-point contact leads to extensive computational time when user-defined or measured gear tooth profiles are considered for the failure mode analysis. For this reason, in this investigation, the contact geometry analysis for a single gear pair is performed as a function of relative rotation of each gear wheel prior to the dynamic simulation and then the contact point are stored in a look-up contact table. The look-up contact tables are then interpolated in the dynamic simulation as a function of relative rotation of a gear pair for determining the location of contact point at every time step. This leads to a computationally fast contact search algorithm with considering the precise contact geometry of gear pairs. The several numerical examples are presented in order to demonstrate the use of the numerical procedure developed in this investigation.

000015865 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015865 653__ $$a

000015865 7112_ $$aCOMPDYN 2013 - 4th International Thematic Conference$$cIsland of Kos (GR)$$d2013-06-12 / 2013-06-14$$gCOMPDYN2013
000015865 720__ $$aSugiyama, H.$$iTerao, A.
000015865 8560_ $$ffischerc@itam.cas.cz
000015865 8564_ $$s154573$$uhttps://invenio.itam.cas.cz/record/15865/files/1593.pdf$$yOriginal version of the author's contribution as presented on CD, section: CD-MS 26 COMPUTATIONAL MULTIBODY SYSTEM DYNAMICS
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000015865 962__ $$r15525
000015865 980__ $$aPAPER