Review on Dynamic Responses of Vibrating Systems with Uncertain Parameters

This paper is based on the study of dynamic responses of various vibrating systems at multiple frequencies with uncertain parameters. The concept of uncertainty plays an important role in the design of engineering systems. Uncertainty can be in the form of no homogeneous material, frictional changes in damping and variation in spring stiffness during operation. Dynamic response of a mechanical system may be affected adversely due to existence of minor uncertainty. Hence it becomes important to investigate its effects on mechanical system for different frequency domain. Large and varied amount of research has been carried out in developing the techniques which predict the dynamic responses of structures in frequency and time domains. However studies related with the dynamic responses of structures with uncertainty are limited. The aim of this paper is to study, analyze, compare and report, available investigation that emphasizes uncertainty of at least one type i.e. either related with spring or mass or damper.