Hello dears! am new for this forum

[Shikurmechanical]

Hello dears! am new for this forum but am interesting with ur discussions. .... am doing on rollers(high speed and low speed) surface fatigue contact .... the profile of one roller is flat and the second is tapered at the end of the edge in both sides. .....what do you think that where the surface failure/or pitting will be happened? at high speed roller or low speed roller. ....the answer should be logical. ....

and if any one who have experimental data(like alternating stress vs number of cycles. ..and stress vs strain) on the material Chromium molybdenum alloy steel SCM420, please help me. OR show me how can I get it. ....

Thanks all.

 

[Shikurmechanical]

yet no answer?
any answer can be greatly appreciated.

 

[IRstuff]

Doesn't really look like an FEA question, does it?

TTFN
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[Shikurmechanical]

To clarify my question am using two rollers contact as hertz uses two cylinders contact to investigate the contact and fatigue stress analysis. ...and this two rollers contact used to simulate gear and pinion teeth contact....I think the pinion teeth will be going to failure due to many number of stress cycles than gear teeth. ...analogously I think the high speed roller will going to failure bcoz it will rotate more number of cycles and leads to fatigue failure. ...but I need ur suggestions so far. ...Now am trying to do the analysis using FEM of ANSYS Workbench. .....



Secondly I need the experimental data for Chromium molybdenum alloy steel. ...

regards
Shikur