I am having a hard time grasping contact curvature sums. Can someone give me a link to where there is a guide or a youtube video? or can someone help me here please.(adsbygoogle = window.adsbygoogle || []).push({});

Here are the equations:

1/R_{x}= 1/r_{ax}+ 1/r_{bx}

1/R_{y}= 1/r_{ay}+ 1/r_{by}

1/R = 1/R_{x}+ 1/R_{y}

The question is this:

The ball-outer race contact of a deep groove ball bearing has 10mm ball diameter, a 5.5 mm outer race concave groove radius and a 45 mm radius from the bearing axis to the bottom of the groove. The load on the ball is 500 N and the race and the ball are made of steel (E=206 GPa, v = 0.30). Apply Hertzian Contact Analysis to determine.

(a) - Curvature Sum (Include diagrams to define contact geometry).

From this I reckon it is talking about a rolling element bearing?

I know how to do the rest of the questions but I really don't understand how to find the curvature sum. I have searched on google and youtube but all I find is reports and simulations, none of which actually explain anything.

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# (Tribology) Can someone explain Contact Curvature Sum to me?

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