Applications III: Modal Testing

Zu-Qing Qu ()
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Zu-Qing Qu: University of Arkansas, Department of Civil Engineering

Chapter 11 in Model Order Reduction Techniques, 2004, pp 295-312 from Springer

Abstract: Abstract Modal testing has been employed in many engineering disciplines to determine the vibration characteristics of a system including natural frequencies, mode shapes, frequency responses, and so on. With the development of hardware and software, the modal testing technique has become more and more efficient, reliable, and accurate and has been widely adopted in industry. However, for large, complex structures, the test is usually costly and time-consuming, especially when mode shapes are concerned. Furthermore, highly accurate experimental data are generally not easy to be obtained for a complex structural system because many concerns, such as the overall system properties, test setup, instrumentation, digital signal processing, frequency response function formulation, excitation, and modal parameter estimation, should be considered carefully in the test (Avitabile, 1998). Any carelessness may result in errors in the test data.

Keywords: Finite Element Model; Mode Shape; Model Reduction; Mode Expansion; Analytical Finite Element Model (search for similar items in EconPapers)
Date: 2004
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DOI: 10.1007/978-1-4471-3827-3_11

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