"In the preceding chapter we saw how the loads acting on a beam create internal actions (or stress resultants) in the form of shear forces and bending moments. In this chapter we go one step further and investigate the stresses and strains associated with those shear forces and bending moments. Knowing the stresses and strains, we will be able to analyze and design beams subjected to a variety of loading conditions."

COORDINATE AXES
TWO OR THREE INTERSECTING LINES IN SPACE THAT ARE USED AS A MEASUREMENT OR ANALYTICAL REFERENCE FOR DESCRIBING CALCULATIONS AND SYSTEM COMPONENTS.

DEFLECTION
A BEND OR CURVING AWAY

DEFLECTION CURVE
A CURVE THAT DEVIATES FROM ITS EXPECTED PATH.

NONUNIFORM
VARIABLE IN SPACE OR TIME.

NONUNIFORM BENDING
A BEAM THAT BENDS DIFFERENT AMOUNTS DEPENDING ON LOCATION.

PLANE
NORMALLY A FLAT, IMAGINARY SURFACE

PLANE OF BENDING
A PLANE ORIENTED TO INCLUDE THE BENDING CURVE OF A COLUMN OR SUPPORTING MEMBER

UNIFORM

UNIFORM