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- W2787066429 abstract "The presence of crack introduces local flexibilities and changes physical characteristics of a structure which in turn alter its dynamic behavior. Crack depth, location, orientation and number of cracks are the main parameters that greatly influence the dynamics. Therefore, it is necessary to understand dynamics of cracked structures. Predominantly, every material may be treated as viscoelastic and most of the time material damping facilitates to suppress vibration. Thus present study concentrates on exploring the dynamic behavior of damped cantilever beam with single open crack. Operator based constitutive relationship is used to develop the general time domain, linear viscoelastic model. Higher order equation of motion is obtained based on Euler-Bernoulli and Timoshenko beam theory. Finite element method is utilized to discretize the continuum. Higher order equation is further converted to state space form for Eigen analysis. From the numerical results, it is observed that the appearance of crack decreases the natural frequency of vibration when compared to an uncracked viscoelastic beam. Under cracked conditions, the viscoelastic Timoshenko beam tends to give lower frequency values when compared to viscoelastic Euler-Bernoulli beam due to shear effect." @default.
- W2787066429 created "2018-02-23" @default.
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- W2787066429 date "2017-12-07" @default.
- W2787066429 modified "2023-09-26" @default.
- W2787066429 title "Dynamics of Cracked Viscoelastic Beam: An Operator Based Finite Element Approach" @default.
- W2787066429 doi "https://doi.org/10.1115/gtindia2017-4616" @default.
- W2787066429 hasPublicationYear "2017" @default.
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