Guided waves are utilized in structural health monitoring for identifying damage in material components. Simulations can be used to examine how elastic waves propagate in components to help in selecting measurement and data analysis techniques. In this work, the influence of grid size and the frequency sample rate on the amplitude accuracy and convergence of local interaction simulation approach/sharp interface model (LISA/SIM) numerical simulations are studied as they pertain to guided wave propagation in structural materials. These issues are studied in all three dimensions, and amplitude distortion with respect to the Courant–Friedrich–Lewy criterion is explored. The LISA/SIM enables accurate and fast modeling of localized and sharp changes in material properties across interfaces associated with heterogeneities and/ or boundaries. The validity of the simulation is demonstrated by comparing simulated responses with experimentally measured data. Additionally, Lamb wave dispersion curves are extracted through the course of the convergence study using a broadband pulse and the two-dimensional fast Fourier transform method.
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e-mail: deadams@purdue.edu
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Research Papers
Accuracy and Convergence Using a Local Interaction Simulation Approach in One, Two, and Three Dimensions
Shankar Sundararaman,
Shankar Sundararaman
Ray W. Herrick Laboratories,
Purdue University
, West Lafayette, IN 47907-2031
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Douglas E. Adams
Douglas E. Adams
Ray W. Herrick Laboratories,
e-mail: deadams@purdue.edu
Purdue University
, West Lafayette, IN 47907-2031
Search for other works by this author on:
Shankar Sundararaman
Ray W. Herrick Laboratories,
Purdue University
, West Lafayette, IN 47907-2031
Douglas E. Adams
Ray W. Herrick Laboratories,
Purdue University
, West Lafayette, IN 47907-2031e-mail: deadams@purdue.edu
J. Appl. Mech. May 2009, 76(3): 031008 (10 pages)
Published Online: March 9, 2009
Article history
Received:
April 19, 2007
Revised:
October 20, 2007
Published:
March 9, 2009
Citation
Sundararaman, S., and Adams, D. E. (March 9, 2009). "Accuracy and Convergence Using a Local Interaction Simulation Approach in One, Two, and Three Dimensions." ASME. J. Appl. Mech. May 2009; 76(3): 031008. https://doi.org/10.1115/1.2871105
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