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gear mesh stiffness variation

gear mesh stiffness variation

gear mesh stiffness variation

(OP)
Hi
 This question is related to contact analysis between two gears when they are in meshing. Usually when gears are in mesh(tooth to tooth  contact not ansys model mesh)they start to engage from its tip of tooth profile with the other  mating gear and ends with with same form. But in between contact there is stiffness which cannot be considered a contant  rather it is a pure variational. Actually it is considered the stiffness is variating with the time in square wave form of fourier analysis from   
K(stiffness) maximum  to K minimum.
 K maximum when gears tooth are full engaged and K minimum when gear tooth are start and end to  engagement.
  So my question in ANSYS in 2Dimensional model, is there any contact pairs of elements are available which are updating stiffness according to load changing with time steps as in gear mesh, ofcourse i tried with CONTAC12,178, but it doesn't give proper pair formation in between gear models as i failed to form contact pair, it would be appreciated if some one reply to this research related question.

thank you and cheers

satish

RE: gear mesh stiffness variation

What is the stiffness K that you are referring to?

RE: gear mesh stiffness variation

(OP)
hey nagi, thanks for reply

 it is the meshing  stiffness which is periodic at mesh frequency of gears which can act similar like linear spring, not gear's  material stiffness.Which can be expressed as in fourier series.
hopes this information  would help you

thank you
satish madrekar

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