Experimental and computational study on dynamic analysis of cracked simply supported structures under moving mass

Cihan O. Bulut, Shakti P. Jena, Serpil Kurt

Research output: Contribution to journalArticlepeer-review

Abstract

In this study, the influences of crack parameters like crack location from the left end, crack height, number of cracks and the magnitude of mass and the velocity of the transit load on the vertical displacements of the cracked simply supported beams subjected to transit mass are investigated. The transverse open cracks with numerous damage scenerios are considered for the mathematical modelling of the system. The governing equations of motion for the system have been obtained and the equations have been solved by the help of Duhamel integral technique. The theoretical formulation has been exemplified with numerical studies. By utilizing ANSYS Workbench 2020, transient structural analysis has been carried out. The mode shapes and the frequency ratios of damaged simply supported beam have also been determined. To validate the numerical and FEM models, the experiments with damaged beams have been carried out in the laboratory. It has been proven that the results of the theoretical and FEM models are well convergent with the experimental data. The results gathered from the numerical analysis, FEA as well as experimental study have been presented with comparative graphs and tables. The outcomes of the examinations have been interpreted in the conclusions part. It has been observed that subject parameters are of considerable significance on the time dependent response of the cracked beams.

Original languageEnglish
Pages (from-to)114-133
Number of pages20
JournalFrattura ed Integrita Strutturale
Volume16
Issue number60
DOIs
Publication statusPublished - Apr 2022

Bibliographical note

Publisher Copyright:
© 2022, Gruppo Italiano Frattura. All rights reserved.

Funding

The authors are grateful to the laboratory staff in Power, Motion and Process Control (Rockwell Automation) Laboratory in Istanbul Technical University for the permission of laboratory access and the preparation of the experimental set-up along with the programming of PLC controller.

FundersFunder number
Istanbul Teknik Üniversitesi

    Keywords

    • Damaged simply supported beam
    • Duhamel integral
    • Experimental study
    • FEA
    • Moving load

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