NOOB Question - Calculating a pressure applied

[Shawthing6927]

I have a plate 70mm x 70mm. There are 2 points of force being applied to the plate at 6.5 N.

From this can I calculate a pressure applied to the plate in PSI?

Attached image.

Thanks

 

[rb1957]

you can if you know how to convert N/mm2 to lb/in2 (ie if you know how to use google).

but I don't see how converting these two point loads to a pressure over the plate will tell you much about how the plate is affected by these loads.

another day in paradise, or is paradise one day closer ?

 

[BAretired]

The force shown at the lower end of your sketch is not on the diagonal. This means that the resultant force will not be centered on the plate and as a result, pressure will be variable.

If the resultant force of 13 N was centered on the plate and the plate was a rigid body, the uniform pressure would be 0.0027 N/mm² which would be equivalent to approximately 0.385 psi.

If the plate bends in order to apply pressure to a substrate, pressure on the substrate will not be uniform; its value will be dependent on the stiffness of the plate and the properties of the substrate.

BA

 

[drawoh]

Shawthing6927,

Upon what are are those forces applied? The stress at the indicated contact point should approach infinity, given that the area appears to be zerol.

--
JHG