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Wave Propagation Analysis of Edge Cracked Circular Beams under Impact Force

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  • Şeref Doğuşcan Akbaş

Abstract

This paper presents responses of an edge circular cantilever beam under the effect of an impact force. The beam is excited by a transverse triangular force impulse modulated by a harmonic motion. The Kelvin–Voigt model for the material of the beam is used. The cracked beam is modelled as an assembly of two sub-beams connected through a massless elastic rotational spring. The considered problem is investigated within the Bernoulli-Euler beam theory by using energy based finite element method. The system of equations of motion is derived by using Lagrange's equations. The obtained system of linear differential equations is reduced to a linear algebraic equation system and solved in the time domain by using Newmark average acceleration method. In the study, the effects of the location of crack, the depth of the crack, on the characteristics of the reflected waves are investigated in detail. Also, the positions of the cracks are calculated by using reflected waves.

Suggested Citation

  • Şeref Doğuşcan Akbaş, 2014. "Wave Propagation Analysis of Edge Cracked Circular Beams under Impact Force," PLOS ONE, Public Library of Science, vol. 9(6), pages 1-8, June.
    • Handle: RePEc:plo:pone00:0100496
    DOI: 10.1371/journal.pone.0100496
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