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Chapter 6 - BENDING First, V & M diagrams (statics), then flexure formula for stress!!
Chapter 6 - BENDING
First, V & M diagrams (statics), then flexure formula for stress!!
Chapter 6 – Sections 1 and 2
• There are three ways to construct shear and moment diagrams:1. By taking cuts and
summing forces and moments, i.e.
0
0
cutM
Fy
Note: Get equations for V and M, just plot equations
2. By Inspection:
dxxVM
dxxwV
)(
)(
Do not get actual equations, good if just after Vmax and Mmax
3. By Direct Integration:
dxxVdMdxxwdV)()(
Good if w(x) is a complicated function, i.e.
w(x) = 4sin3xw(x) = 5X3 + 3X2 + 2X +9
EXAMPLES:
Use the approach that makes most sense. Inspection most common.
