Modern day vehicles demand higher load carrying capacity withless installed volume and weight. The gears used in the vehiclesshould also have lesser noise and vibration. Even though helicalgears will meet the requirement, they are prone for additionalaxial thrust problem. High contact ratio (HCR) is one such gearingconcept used for achieving high load carrying capacity with lessvolume and weight. Contact ratio greater than 2.0 in HCR gearingresults in lower bending and contact stresses. Previously publishedliterature deal with studies on various parameters affectingperformance of HCR gears but a comparison of HCR and normal contactratio (NCR) gears with same module and center distance has not beencarried out so for. This paper deals with finite element analysisof HCR,NCR gears with same module, center distance and thecomparison of bending, contact stress for both HCR, NCR gears. Atwo dimensional deformable body contact model of HCR and NCR gearsis analyzed in ANSYS software. ANSYS Parametric Design language(APDL) is used for studying the bending and contact stressvariation on complete mesh cycle of the gear pair for identicalload conditions. The study involves design, modeling, meshing andpost processing of HCR and NCR gears using single window modelingconcept to avoid contact convergence and related numericalproblems.
- Edition:
- 10
- Published:
- 10/01/2010
- Number of Pages:
- 12
- File Size:
- 1 file , 570 KB
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