2D internal forces and moments
Sign Conventions
w - distributed load
- sign convention: + if pointing down on beam
P or N - axial or normal force
- sign convention: + if in tension
V - shear force
- sign convention: + if rotating axis of beam clockwise
M - bending moment
- sign convention: + if bending the axis of the beam upward (smiley face)
Assume no transverse shear forces in 2D.
3d internal forces and moments
