What is elastic modulus (or Youngs modulus) ?
A material property of all elastic solids, Young’s modulus (Y) is used to describe “stiffness” of materials. When rod or plate of cross section (A) and length (L) is pulled with force (F) resulting in an elongation (Δ L), the Young’s modulus can be computed as follows: Y = (L/A)*(F/ΔL) In piezo applications Y is frequently used to estimate the equivalent spring constant of a rod or a plate of material that is in contact with a piezo actuator (F/ΔF).
