IDENTIFICATION OF STIFFNESS AND DAMPING COEFFICIENTS OF BEAM SUPPORTS

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ABEDI M.; HEMATIYAN M.R.; SARVI GHIASABADI O.

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Journal: JOURNAL OF SOLID AND FLUID MECHANICS Year:2016 | Volume:6 | Issue:1 Page(s): 43-60

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Title

IDENTIFICATION OF STIFFNESS AND DAMPING COEFFICIENTS OF BEAM SUPPORTS

Author(s)

ABEDI M. | HEMATIYAN M.R. | SARVI GHIASABADI O. | Issue Writer Certificate

Keywords

INVERSE ANALYSISQ1

BEAM SUPPORTQ1

STIFFNESS COEFFICIENTQ1

DAMPING COEFFICIENTQ2

DYNAMIC MEASUREMENT DATAQ1

Abstract

Supports and joints play a basic and important role in the engineering structures. It is necessary to identify the various parameters of supports. The stiffness and damping parameters are the most important parameters of a support. In this work, an inverse method based on the dynamic acceleration measurement data is used to identify and study the stiffness and DAMPING COEFFICIENTs of the supports of the cantilever and doubly clamped beams. To this end, an optimization problem is defined and subsequently solved using the least squares method. In the cantilever beam, the effects of various parameters such as the magnitude of measurement errors, number of measured data, number of sensors, time duration of the applied load, magnitude of the stiffness and damping parameters, and time interval of data collection are studied on the inverse solutions. For the doubly-clamped beam, the effects of magnitude of measurement errors, number of measured data, data type, and number of sensors on the results are studied. The results obtained show that the doubly-clamped beam problem is much more difficult than the cantilever beam one. It is appropriate to use two sensors for problems with the doubly-clamped beam. By a careful investigation of the numerical results obtained, an attempt is made to answer the questions and difficulties that may occur during the practical tests.

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APA: Copy

ABEDI, M., HEMATIYAN, M.R., & SARVI GHIASABADI, O.. (2016). IDENTIFICATION OF STIFFNESS AND DAMPING COEFFICIENTS OF BEAM SUPPORTS. JOURNAL OF SOLID AND FLUID MECHANICS, 6(1), 43-60. SID. https://sid.ir/paper/212783/en

Vancouver: Copy

ABEDI M., HEMATIYAN M.R., SARVI GHIASABADI O.. IDENTIFICATION OF STIFFNESS AND DAMPING COEFFICIENTS OF BEAM SUPPORTS. JOURNAL OF SOLID AND FLUID MECHANICS[Internet]. 2016;6(1):43-60. Available from: https://sid.ir/paper/212783/en

IEEE: Copy

M. ABEDI, M.R. HEMATIYAN, and O. SARVI GHIASABADI, “IDENTIFICATION OF STIFFNESS AND DAMPING COEFFICIENTS OF BEAM SUPPORTS,” JOURNAL OF SOLID AND FLUID MECHANICS, vol. 6, no. 1, pp. 43–60, 2016, [Online]. Available: https://sid.ir/paper/212783/en

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