Estimation of reflection and transmission coefficients using the spectral element method: application to crack modelling in beams.
Shone, Simon, Mace, Brian and Waters, Tim (2004) Estimation of reflection and transmission coefficients using the spectral element method: application to crack modelling in beams. In, Proceedings of ISMA: International Conference on Noise and Vibration Engineering. ISMA 2004, International Conference on Noise and Vibration Engineering Leuven, Belgium, ISMA Publications, 187-200.
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Description/Abstract
The scattering of axial and flexural waves by a crack in an otherwise uniform beam is considered. Finite element analysis (FEA) is used to determine the dynamic stiffness matrix of a section of beam containing a single-edge transverse crack. Reflection and transmission matrices for the crack are estimated by combining the FEA with a spectral element model of the beam. The analysis clearly shows the existence of wave-mode conversion between the flexural and axial waves, an effect unaccounted for by conventional lumped-spring models of cracks. The magnitude of the reflection coefficient for certain sizes of crack also suggests that detection of the reflected flexural wave could be used for crack detection.
| Item Type: | Book Section |
|---|---|
| Additional Information: | Poster session POS3A (ID 206) |
| ISBNs: | 9073802822 (hardback) |
| Related URLs: | |
| Keywords: | noise engineering, vibration engineering, ISMA |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | University Structure - Pre August 2011 > Institute of Sound and Vibration Research > Dynamics |
| Item ID: | 28127 |
| Date Deposited: | 02 May 2006 |
| Last Modified: | 02 Mar 2012 11:46 |
| Contributors: | Shone, Simon (Author) Mace, Brian (Author) Waters, Tim (Author) |
| Date: | 2004 |
| Additional Information: | Poster session POS3A (ID 206) |
| Status: | Published |
| Publisher: | ISMA Publications |
| URI: | http://eprints.soton.ac.uk/id/eprint/28127 |
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