Dynamic stability of layered beams with bolted joints under parametric excitation

摘要: Time dependent excitation appearing as a variable co- efficient in the governing equation of motion is called parametric excitation. Dynamic stability elastic systems deal with study vibrations, induced by pulsating loads that are respect to certain forms deformations. An important aspect analysis dynamic system establishment regions space which becomes unstable; these known instability. The boundary separating stable zones from unstable boundaries and plot on diagram. Beams simplest structural members any machine, mechanism or large structure. Layered structures gaining importance present day because their good damping capacity characteristics. objective proposed research work carry out experimental investigations layered structured beams bolted joints different configurations constraining layers. It investigate following aspects beams. Experimental has been carried validate theoretical findings. results complete match one.