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A Review on Fem Modelling of Cantilever Beam

Author(s):

Sumit Suresh Patil , sandip University nashik; Ankit Suresh Patil, pad.vasantdada patil college of engineering pune

Keywords:

ANSYS, Transversely Isotropic Piezoelectric, Stress Concentration, Complex Variation Method, Elliptic Cross bones, Rectangular Blocks, Poisson's Ratio, Three-Dimensional Finite Element Method

Abstract

During the last few decades, intense research on the detection of crack using the vibration based techniques has been done and various approaches have been developed by researchers. In the present paper, detection of the crack presence on the surface of beam-type structural element using natural frequency is presented. First two natural frequencies of the cracked beam have been obtained experimentally and used for detection of crack location and size. Detected crack locations and size are compared with the actual results and found to be in good agreement. Also, the effect of the crack location and the crack depth on the natural frequency is presented. Crack hinders the optimum performance of a machine. Presently most of the failures encountered by machines are due to material fatigue. Therefore crack detection and localization is the main topic of discussion for various researchers across the globe. The dynamic behaviour of a whole structure is affected due to the presence of a crack as the stiffness of that structural element is altered. The cracks in the structure change the frequencies, amplitudes of free vibration and dynamic stability areas to an inevitable extent. So a diagnosis of the changes allows the experimenter to identify the cracks without aborting the system applications. The effect of an open crack on the modal parameters of the cantilever beam subjected to free vibration is analysed and the results obtained from the numerical method i.e. finite element method (FEM) and the experimental method are compared. It is concluded that results obtained from experiment have a very good agreement with the results obtained from FEM and the structure vibrates with more frequency in the presence of a crack away from the fixed end.

Other Details

Paper ID: IJSRDV6I60277
Published in: Volume : 6, Issue : 6
Publication Date: 01/09/2018
Page(s): 371-378

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