Concept
Eccentricity
2 essays name this object, across 2 fields. What follows is each of them, and the objects they name alongside it.
The point that is not in the section
A channel loaded down its web twists. To stop it, the load must be applied through a point outside the steel entirely — in the air beside the section, where nothing can be attached.
The load that makes itself worse
A structure that has leaned carries its weight off the axis, which makes it lean further. The amplification is one over one minus the load ratio, and it runs away long before the buckling load.
Named alongside it
The objects these essays reach for when they reach for this one.
Amplification factorEffective lengthI-sectionImperfectionNotional loadOpen sectionP-deltaSecond order effectsShear centreShear flowTorsionWarping