Relationship between load and deflection

[jon1984]

Hi,

Below is a very simple answer as to what happens to a beam when it has a load applied.

"When a load is applied to a beam, delfection occours. If not much deflection, then object is stiff. Linear relationship."

How could i further explain this, or is this simple enough?

 

[minger]

The linear relationship really only holds true for low strains.