Graphic statics — where it appears
Named by 2 essays across 2 fields — each of them below, with the objects they name alongside it.
Three forces must meet at a point, and a drawing can find it
A body held by exactly three forces has their lines of action concurrent. That is a theorem, it is enough to solve for direction and magnitude, and for a century it was done with a straightedge.
The area of a diagram is a rotation
A deflection is the double integral of a bending moment, and the two constants of integration are the whole difficulty. Mohr's theorems replace them with two pictures — an area, and where that area's centre of gravity sits.
Named alongside it
The objects these essays reach for when they reach for this one.
CentroidConcurrencyDeflectionFirst moment of areaFlexural rigidityForce polygonFree body diagramFunicularIntegrationLine of actionMoment diagramPoint of contraflexure