Finite Elements Analysis (FEA)
Finite element analysis for gearing can be very difficult. One of the difficulties is that often the gear geometry cannot be expressed in one set of equations available in a mechanical design textbook. The gear geometry is related to the manufacturing process and sometimes requires the FEA engineer to derive it based on the laws of gearing. It's even more difficult to define the geometries of several gears coming into meshing and their positions with respect to each other, in order to prepare the contact problem model for FEA.
FEA for gearing is carried out in the following cases:
Standard rating methods of AGMA, ISO et. al. cannot be used
- Deflections of gear teeth, shaft, bearings et. al. are required to consider accurately
- Due diligence is taken to validate the results obtained by other methods
Many FEA for gearing have been successfully carried out for own use and outside customers. Our engineers have extensive experience and knowledge in the gear geometry, gear manufacturing, contact problems and FEA:
- Use the windows based gear design programs (commercial or the in-house developed) to obtain the profiles of the gears
- Create the 2D model and the 3D model using AutoCad and SolidWorks, respectively
- Import the CAD model of IGES, Parasolid et. al. into, or directly connect the CAD model with the default industry standard FEA code - ANSYS
- Set up the nonlinear contact problem model within ANSYS for the gears in meshing and carry out the analysis to determine the load sharing ratio among pairs of teeth coming into contact, the maximum contact stress, the maximum the bending stress, and the profile modification
- Use the boundary element analysis to check the results of FEA for further ensuring the correctness of the results
For more information, contact us.