Abstract
Passive constrained layer damping (PCLD) is nowadays a general method for reducing vibrations. Constrained layer damping (CLD) is a very good technology in terms of reducing vibration energy. This paper deals with optimal damping of first three modes of a thin square cantilever plate by constrained viscoelastic layers which are positioned according to the nodal patterns of the mode. In essence, the CLD patches are cut according to the nodal patterns and then applied on to the bare plate. Thus, this approach uses prior information of the deformation patterns of the plate. The ABAQUS finite element analysis software was used to create viscoelastically damped plate models subjected to forced vibration. The direct steady-state dynamic analysis was used to obtain the frequency response functions from which the resonance frequencies of the models were derived. Vibration control using nodal pattern CLD patches is a better way to apply CLD treatment to a plate. This is because the mode shapes give good predictions of where the maximum strains are in the plate as well as the design and size of the damping patches required. It is believed that the methodology proposed in this research work is capable of providing good results.
Highlights
Vibration control is one of most important concern in a number of industries like in aerospace and automobiles
It is concluded that vibration level of a plate can be minimized by using passive vibration control method
The passive constrained layer damping (PCLD) approach used in this paper, gives the optimum shape of a patch and gives the optimal location for attaching patch
Summary
Vibration control is one of most important concern in a number of industries like in aerospace and automobiles. The reason for choosing mode shapes is that a structure LIKES deforming into its mode-shapes, so they end up being a good choice for finding the exact shape and size of ADM. These days, the problem for the design engineer is that ADM’s can be obtained only industrially in limited versions and it is require to find the accurate. ZAINAB ABDUL MALIK, NAVEED AKMAL DIN shape of the applied damping material (ADM) patch Through this method less amount of ADM is to be use, instead of covering the whole base structure or partially covering the structure via rough estimate. Modal methods are capable of accurate answers in a fraction of the time for models with many timesteps (for transient analysis) or frequency points (for frequency response) calculations relative to the number of shapes (mode shapes + static shapes)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
