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- W2343966688 abstract "A developed hybrid method for crack identification of beams is presented. Based on theEuler-Bernouli beam theory and concepts of fracture mechanics, governing equation of the cracked beams isreformulated. Finite element (FE) method as a powerful numerical tool is used to discritize the equation inspace domain. After transferring the equations from time domain to frequency domain, frequencies andmode shapes of the beam are obtained. Efficiency of the governed equation for free vibration analysis of thebeams is shown by comparing the results with those available in literature and via ANSYS software. Theused equation yields to move the influence of cracks from the stiffness matrix to the mass matrix. For crackidentification measured data are produced by applying random error to the calculated frequencies and modeshapes. An objective function is prepared as root mean square error between measured and calculated data.To minimize the function, hybrid genetic algorithms (GAs) and particle swarm optimization (PSO)technique is introduced. Efficiency, Robustness, applicability and usefulness of the mixed optimizationnumerical tool in conjunction with the finite element method for identification of cracks locations and depthsare shown via solving different examples." @default.
- W2343966688 created "2016-06-24" @default.
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- W2343966688 date "2015-09-25" @default.
- W2343966688 modified "2023-09-25" @default.
- W2343966688 title "A developed hybrid method for crack identification of beams" @default.
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- W2343966688 doi "https://doi.org/10.12989/sss.2015.16.3.401" @default.
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