TC BOLT ASSEMBLY

BOLT_ASSEMBLY

Action Reaction Forces

Physics overview: Newton's Third Law is the basic concept for most of the physics covered. Which states that for every action (force) there is an equal and opposite reaction (force). What this means is that if you press two objects together the force from one object is met with an equal force from the second object but in the opposite direction. Basically they are pressing on each other with the same amount of force.
ACTION_REACTION_FORCES
Diagram by Taylor Tharp


Action reaction OF TENSION CONTROL BOLTS

The same thing happens between the threads of the nut and the bolt. The threads of the nut apply a force backwards on the threads of the bolt and the threads on the bolt push forward on the the nut threads. There is a correlation between the force from the nut onto the plate and the force between the threads. Think about if there was no plate and you were just screwing the nut onto the end of the bolt. It wouldn’t tighten down, why is that? This is because there is no force pushing the nut backwards, so the threads of the nut are free to bounce between the grooves of the bolts threads. Once there is a force pushing backwards on the nut it presses the threads up against each other. The more it is tightened down on the plate the greater the forces on the threads become. The force that the threads is called the proof load, it is the maximum force that the threads can withstand without breaking.

BOLT_FORCES
Diagram by Taylor Tharp