Undamped non-linear vibration mechanism of bolted flange joint under transverse load

Bolted flange joints are commonly utilized in engineering constructions; nevertheless, their dynamic behavior is complicated when nonlinearity present. The bolted joint structure this research considered as a spring-mass system, and the equivalent axial two bi-linear springs-bending beam model, well system’s vibration control equation, created to examine structure’s characteristics under transverse stress. results indicate that spring stiffness constant linear function of displacement, mass matrix equation coupled, system produces only upon impact; displacement not bilinear quadratic will vibrate transversely longitudinally impact. Regardless how simplified, or movement stable periodic with response proportional radius L connected cylindrical shell.