Calculation module “Local tooth root stresses"
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Full title: |
Development and integration of a program module for fast numerical stress analysis of arbitrary tooth cross-sections in RIKOR |
| Duration: |
01/2015 – 12/2016 |
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Contributors: |
Dipl.-Ing. Wolf Wagner (TU Dresden, IMM) |
| Financing: | Forschungsvereinigung Antriebstechnik (FVA) |
| Project partner: | Gear Research Centre (FZG), TU Munich |
| Objective: | Development and integration of a program module for fast numerical stress analysis of arbitrary tooth cross-sections in RIKOR. |
| Approach: |
Using existing non-commercial solutions based on the boundary element method (BEM) from the bevel gear calculation program BECAL, a module for the calculation of tooth root stresses of arbitrary tooth geometries was created. New interfaces were defined and implemented, the functionality extended and the computing efficiency improved. A pre-processor was developed for the automated preparation of the tooth contours. This pre-processor takes over the discretization of the boundary under consideration of the special requirements of the boundary element method. The functional range of RIKOR has been extended so that any tooth root contours can be imported and used. From the results of the 2D-BEM calculations a stress correction factor YS,OeZS is calculated, which replaces the correction factor YS according to ISO 6336 in the tooth root stress calculation. The validity of the calculation methodology used was shown extensively in comparative calculations with standard calculation methods and the FEM for a uniform load distribution. In addition, test results from static measurement tests were used, which also confirm that the procedure was correct. |
| Results: |
By integrating a numerical calculation method, RIKOR can also be used to calculate and evaluate root stresses on gears with special tooth root geometries. |
