Curve fitting free-vibration time response for estimation of structural dynamic parameters
Plucking a string on a guitar, violin, or harpsichord not only produces a pleasant sound but also displays the instrument's "acoustical personality." Similarly, plucking a structure or other mechanical system, then analyzing the subsequent free vibration, can reveal the system's...
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| Veröffentlicht in: | Experimental techniques (Westport, Conn.) Conn.), 2010, Vol.34 (1), p.26-33 |
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| container_title | Experimental techniques (Westport, Conn.) |
| container_volume | 34 |
| creator | Hallauer, W. L. Slemp, W. C. H. Kapania, R. K. |
| description | Plucking a string on a guitar, violin, or harpsichord not only produces a pleasant sound but also displays the instrument's "acoustical personality." Similarly, plucking a structure or other mechanical system, then analyzing the subsequent free vibration, can reveal the system's "dynamical personality." Here, Hallauer et al discuss a type of analysis in which a mathematical model is curve fitted directly to the free-vibration time-response data. They present examples of analyzing experimental free-vibration data by means of MATLAB, a popular, general-purpose system of software. They describe the application of this curve fitting approach to two different types of testing and analysis: estimation for a 1-DOF mass-spring system of both the nonlinear kinetic Coulomb friction and the coexisting linear viscous damping; and experimental modal analysis of multiple-DOF systems, specifically, modal parameter estimation based on multiple, simultaneously recorded free-vibration time responses. |
| doi_str_mv | 10.1111/j.1747-1567.2008.00449.x |
| format | Article |
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| language | eng |
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| source | Wiley Online Library Journals Frontfile Complete; SpringerLink Journals - AutoHoldings |
| subjects | Characterization and Evaluation of Materials Chemistry and Materials Science Kinetics Materials Science Mathematical models Parameter estimation Response time Software Techniques Vibration analysis |
| title | Curve fitting free-vibration time response for estimation of structural dynamic parameters |
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