BOLTCALC

The BOLTCALC program completes an analysis of a bolted joint by considering the forces acting upon a single bolt. The program will allow for variations in the bolt clamp force (or preload) due to the tightening method and embedding due to plastic deformation in the thread and under the nut. Based upon published research information, the program will determine the fatigue endurance limit of the thread (rolled or machine cut), the amount of embedding anticipated in the joint and the tightening torque for given friction conditions. A database of thread and under nut friction values for a range of bolt finishes and joint materials is included in the program. By pulling together published research information in an easy to use package, the program allows the engineer to perform checks and calculations on a bolted joint that otherwise could only be completed after extensive research and experience into the subject.