Concept
Slip resistance — where it appears
2 essays name this object, across 2 fields. What follows is each of them, and the objects they name alongside it.
The joint that carries nothing until it slips
Tighten the bolts hard enough and the plates are clamped together with a force nothing applied. The joint then carries shear by friction, the bolts are in tension and not in shear at all, and the load path has nothing in common with the joint it looks identical to.
The force that is whatever it needs to be
Every other force in statics has a value the equations produce. Friction has an inequality instead, so it takes whatever value equilibrium demands and the bound only ever says no — which means a problem with friction in it has a range of answers rather than one.
Named alongside it
The objects these essays reach for when they reach for this one.
FrictionAngle of reposeBolt tensionConnectionEquilibriumFree bodyIndeterminacyLimit stateOverturningPreloadRelaxationSelf locking