# Strength of Materials/Axial Deformation of Bars

## Examples[edit]

The analysis presented in this section is valid when the length an object analysis, say *L*, is much larger than other dimensions and when the applied load is in the direction of *L*. An example of such a case is a pin jointed truss. When a load is applied to a truss its members carry compressive (or tensile) load acting such as to shorten (or increase) the length or tensile load.

Let us consider a bar of length L, cross sectional area *A* and an elastic modulus *E*. It is fixed on one of its end and is acted upon a force *P* along its length.