Instructions for the preparation of a numerical investigation on crack parameters of cantilever beam using FEA

• Autorzy: Ansari M. A. , Tiwari V. K.

Identyfikatory

DOI

10.5604/01.3001.0015.5854

• Języki publikacji: EN

Abstrakty

EN

Purpose: The operation of engineering structures may cause various type of damages like cracks, alterations. Such kind of defects can lead to change in vibration characteristics of cantilever beam. The superposition of frequency causes resonance leading to amplitude built up and failure of beam. The current research investigates the effect of crack dimensional parameters on vibrational characteristics of cantilever beam. Design/methodology/approach: The CAD design and FE simulation studies are conducted in ANSYS 20 simulation package. The natural frequencies, mode shapes and response surface plots are generated, and comparative studies are performed. The effect of crack dimensional parameters is then investigated using Taguchi Design of Experiments. The statistical method of central composite design (CCD) scheme in Response Surface Optimization is used to generated various design points based on variation of crack width and crack depth. Findings: The research findings have shown that crack depth or crack height have significant effect on magnitude of deformation and natural frequency. The deformation is minimum at 0.009 m crack height and reaches maximum value at 0.011 m crack height. Research limitations/implications: The crack induced in the cantilever beam needs to be repaired properly in order to avoid crack propagation due to resonance. The present study enabled to determine frequencies of external excitation which should be avoided. The limitation of current research is the type of crack studied which is transverse type. The effect of longitudinal cracks on vibration characteristics is not investigated. Practical implications: The study on mass participation factor has shown maximum value for torsional frequency which signifies that any external excitation along this direction should be avoided which could cause resonance and lead to amplitude build up. Originality/value: The beams are used in bridge girders and other civil structures which are continuously exposed to moist climate. The moisture present in the air causes corrosion which initiates crack. This crack propagates and alters the natural frequency of beam.

Słowa kluczowe

EN

ANSYS; vibration; cantilever beam

PL

ANSYS; wibracja; belka wspornikowa

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2021
• Tom: Vol. 109, nr 1
• Strony: 5--10
• Opis fizyczny: Bibliogr. 17 poz., rys., tab., wykr.

Twórcy

autor

Ansari M. A.

• Department of Civil Engineering, Jabalpur Engineering College, Jabalpur, Madhya Pradesh, India

• https://orcid.org/0000-0002-7086-2971

autor

Tiwari V. K.

• Department of Civil Engineering, Jabalpur Engineering College, Jabalpur, Madhya Pradesh, India

Bibliografia

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• [14] A.S. Bouboulas, S.K. Georgantzinos, N.K. Anifantis, Vibration Analysis of Cracked Beams Using the Finite Element Method, in: F. Beltran-Carbajal (ed.), Advances in Vibration Engineering and Structural Dynamics, IntechOpen, Rijeka, 2012, 181-204. DOI: http://dx.doi.org/10.5772/51173
• [15] G.K. Grover, Mechanical Vibrations, Eighth Edition, Nem Chand And Bross, Roorkee, 2009.
• [16] E.J. Hearn, Mechanics of Materials 1. An Introduction to the Mechanics of Elastic and Plastic Deformation of Solids and Structural Materials, Third Edition, Butterworth-Heinemann, Oxford-Auckland-Boston-Johannesburg-Melbourne-New Delhi, 1997. DOI: https://doi.org/10.1016/B978-0-7506-3265-2.X5000-2
• [17] M.S. Mia, M.S. Islam, U. Ghosh, Modal Analysis of Cracked Cantilever B eam by Finite Element Simulation, Procedia Engineering 194 (2017) 509-516. DOI: https://doi.org/10.1016/j.proeng.2017.08.178

Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).