Underwater Explosive Loading of Curved Composite Plates: Experimental and Computational Comparisons
The effect of underwater shock loading on an E-Glass / Vinyl-Ester composite material has been studied. The work consists of experimental testing, utilizing a water filled conical shock tube and computational simulations, utilizing the commercially available LS-DYNA finite element code. The plates consist of elliptically curved geometry with 0/90 biaxial laminates. The plates are held with fully clamped boundary conditions and are subjected to underwater explosive (UNDEX) loading. The transient response of the plates is captured in real time through the use of a Digital Image Correlation (DIC) system. The DIC data and computational results show a high level of correlation for both the plate deformation and velocity histories using the Russell error measure. The finite element models are also shown to be able to simulate the onset of delamination mechanisms.
KeywordsTransportation Mold Amid Explosive Hull
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- 6.Jackson, M., Shukla, A., “Performance of Sandwich Composites Subjected to Sequential Impact and Air Blast Loading”, Composites: Part B, Article in Press, 2010Google Scholar
- 12.Poche, L., Zalesak, J., “Development of a Water-Filled Conical Shock Tube for Shock Testing of Small Sonar Transducers by Simulation of the Test Conditions for the Heavyweight MIL-S-901D (Navy)”, NRL Memorandum Report 7109, 10 October 1992Google Scholar
- 15.Russell, D.M., “Error Measures for Comparing Transient Data, Part I: Development of a Comprehensive Error Measure, Part II: Error Measures Case Study”, Proceedings of the 68th Shock and Vibration Symposium, November 3–6, 1997Google Scholar
- 16.Russell, D.M., “DDG53 Shock Trial Simulation Acceptance Criteria”, 69th Shock and Vibration Symposium, October 12–19, 1998Google Scholar