"In chapter 1 we developed the method for finding the normal stress in axially loaded members. In this chapter we will discuss how to determine the deformation of these members, and we will also develop a method for finding the support reactions when these reactions cannot be determined strictly from the equations of equilibrium. An analysis of the effects of thermal stress, stress concentrations, inelastic deformations, and residual stress will also be discussed."

DEFORMATION
A CHANGE IN SHAPE

ELASTIC DEFORMATION

ELASTIC DEFORMATION
A CHANGE IN SHAPE OF A BODY THAT IS NOT PERMANENT. THE DEFORMATION (DENT, STRETCH, COMPRESSION) LASTS ONLY FOR THE DURATION OF THE IMPACT.

LOAD
A FORCE WHICH REPRESENTS THE BURDEN THAT MUST BE SUPPORTED BY A STRUCTURE

SAINT-VENANT'S PRINCIPLE
STRAINS THAT RESULT FROM APPLICATION OF FORCES AND MOMENTS THAT ARE STATICALLY 0 BECOME NEGLIGIBLE AT DISTANCES THAT ARE LARGE COMPARED WITH THE DIMENSIONS OF THE PART.