Harmonic Analysis of Square Plate with and Without Uncertain Parameters

Forced vibration analysis of plate is growing research subject as plates are used for manufacturing many mechanical structures. The analytical solutions have been found for plates with specified mass and stiffness but for the plates with uncertain mass and stiffness are studied very limitedly. The uncertain parameters play an important role in the design of practical mechanical system. It becomes important to study its effects on mechanical system for different frequency domain. Here in this paper structural element square plate with all edge fixed boundary condition is selected on which mass, stiffness and combination of mass and stiffness uncertainty are considered. By using Finite Element Method technique finding out, how plate is dynamically behaves in forced vibration. In the harmonic analysis the response of bare plate is compared with the plate of mass, stiffness and mass-stiffness combination uncertainty. During comparison it is found that uncertain parameters have adverse effects on the dynamic behavior of the plate. The complete plate characteristics were changed. KeywordsVibration Analysis, Harmonic Analysis, Forced Vibration, Uncertain Parameters, FEM and Ansys software. __________________________________________________*****_________________________________________________