Hi sganesh,

The mathematics is a big complicated. In theory it is best modelled using a Finite Element Analysis - go to a structural engineer. Most have a FEM package, and can knock up a model for you.

In concept - think of the free edge as a column strip, say 1/3 the height of the diaphragm. Treat this as a pin-ended column. Buckling stress will then be related to the slenderness ratio, or L/[r^2], where r is the Radius of Gyration of the column strip.

That is a crude model, but it gives you a fair idea of the physical properties involved.

Regards - John.Rz

www.cospire.com / Engineering Tips / Quick Structures ■

Would the normal troughability test be INDICATIVE of the cross-rigidity of such belts ?

If not as an absolute, could the troughability test results be used to COMPARE the cross-rigidity of different belts ?

Regards

Kayem ■

Originally Posted by sganesh

We are using many pocket belts. Both fabric and steel cord belts. They are running on stub rollers and deflection wheel and other pulleys. Hence they are all cross stabilized. Both fabric and steel ply cross stabilised.

We can see a slight curve between the two outside wheels of top deflection wheel.

If we take this place as a reference, is there any method to monitor & measure the cross rigidity?

Is there any relation between the width of the conveyor and the deflection (curve formation between the outside wheels) in millimeters?

After some service will this "sagging" do increase? Is there any time and maximum limit?

This question should not have been translated from the original Double Dutch or Greek!■