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Finite Element Model for Stress Analysis and Nonlinear Contact Analysis of Helical Gears
Ivana Atanasovska Vera Nikoliĉ-Stanojloviĉ Dejan Dimitrijeviĉ Dejan Momèiloviĉ
One of the main goals during load calculations and load capacity check for gears is determination of deformation and stress state in teeth contact zones and teeth fillets. This paper describes development of the finite element model for simultaneously monitoring the deformation and stress state of teeth flanks, teeth fillets and parts of helical gears during the tooth pair meshing period. The paper also describes the Finite Element Method simulation of contact conditions for helical gears teeth with an involute profile. A suitable analysis is performed in order to select a meshed gears model which is sufficiently economic and in same tame sufficiently geometrically accurate. The special algorithm for the tooth involute profile drawing is developed and built in a currently available software for Finite Element Analysis to assure drawing of real flanks contact geometry. The optimal mesh size level is chosen, too. The described finite element models are made for the particular helical gear pair. The obtained numerical results are suitable for tracking deformation and stress variables during the tooth pair meshing period. Key words: gear, helical gear, strain, contact strain, load distribution, stress calculation, finite element analysis.
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