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Multiscale Simulations for Impact Load-Induced Vibration: Assessing a Structure's Vulnerability

Title
Multiscale Simulations for Impact Load-Induced Vibration: Assessing a Structure's Vulnerability
Author
박준홍
Keywords
impact response; transient wave propagation; vulnerability assessment
Issue Date
2013-04
Publisher
ASME, TWO PARK AVE, NEW YORK, NY 10016-5990 USA
Citation
JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME, 135(2), 021006
Abstract
Vibration resulting from high-velocity projectiles impacting a structure was simulated at multiple scales. Local impact simulations were performed to predict the material deformation and penetration phenomena at the location of impact. The resulting penetration behavior of a steel panel was analyzed for various projectile velocities, sizes, and panel thicknesses. Three-layer panels with Kevlar as the core material were simulated to understand the effects of structural layering on the reduction of the impact force. The forces acting on the panel in the longitudinal and transverse directions were calculated from the obtained stress distribution in the local deformation model. Using the estimated force input, transient longitudinal and flexural wave propagations were calculated to analyze the radiation of the impact energy along the structural span. Vulnerable positions with high possibilities of damage to crucial components due to impact loading were identified from the resulting vibration responses.
URI
http://materialstechnology.asmedigitalcollection.asme.org/article.aspx?articleid=1673065http://hdl.handle.net/20.500.11754/49957
ISSN
0094-4289; 1528-8889
DOI
10.1115/1.4023774
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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