laminated ribs

[Farrell]

stress is the force causing the deformation divided by the area to which the 
force is applied; and strain is the ratio of the change caused by the stress 
to the original state of the object.

For a piano rib (in a RC&S system) then, the stress would be downbearing and 
the strain would be the amount of crown loss due to downbearing pressure.

Terry Farrell


> The problem, I believe, is that "strain" is not an engineering term that 
> I'm
> familiar with and its specific meaning in the description below is vague.
>
> David Love
> davidlovepianos at comcast.net