The bolt is prescribed the same reference temperature at zero strain as the rest of the assembly (T0), which is defined in the static study’s Thermal/Flow effects tab in the Properties dialog box. For calculating the thermal expansion or contraction of the bolt, a uniform temperature distribution is assumed for the entire bolt (T). If the tight fit option is not selected, then the bolt temperature is obtained by averaging the temperatures of the head and nut contact surfaces. If the tight fit condition is enabled, then the temperature of the cylindrical hole surface
is also taken into account for the calculation of bolt temperature. Since the bolt connector shank is modeled as a beam element, the bolt connector can only expand or contract in the axial (not the radial) direction.
Mating fasteners are known by many different names: sex bolt, binding posts, Chicago screws, interscrews, barrel bolts, barrel nut, partition screws, door closure bolts, furniture screws, panel fasteners, architectural sex bolts, arch series screws, hinge screws, display fasteners, screw nuts, connector bolts, threaded rivets, grommet nuts, post and screw sets, book screws, and stationary screws. Applications vary widely from book binding to installing bathroom partitions. This group of fasteners are used to assemble fitness apparatus, solar panels, playground equipment, railing systems, furniture, athletic helmets, knives, store fixtures, signs, panic bars, and many other products.
Although there is no reason to consider this definition obsolete, because it is far from clear that "a bolt by definition takes a nut" . Using a coach "bolt" as an example (and it has been a 'bolt' for a very long time). It was not originally intended to receive a nut, but did have a shank. Its purpose was not to pass through the entire substrate but only one piece of it, while the threaded portion bit into the other in order to draw, and clamp the materials together. The 'carriage' bolt was derived from this and was employed more to speed up manufacturing than achieve a different function. The carriage bolt passes through both pieces of materials and employs a nut to provide the clamping force. Both are still, however, bolts.