Publications
93 results found
Schiffer A, Tagarielli VL, 2014, One-dimensional response of sandwich plates to underwater blast: Fluid-structure interaction experiments and simulations, International Journal of Impact Engineering, Vol: 71, Pages: 34-49, ISSN: 1879-3509
Fluid-structure interaction (FSI) experiments and finite element (FE) calculations are performed in order to examine the one-dimensional response of water-backed and air-backed sandwich plates subject to blast loading in either deep or shallow water. The sandwich plates comprise rigid face sheets and low-density foam cores. Experiments are conducted in a transparent shock tube, allowing measurements of both structural responses and cavitation processes in the fluid. Measurements are found in good agreement with predictions and allow concluding that the advantages of using the sandwich construction over the monolithic one are maximised for the case of water-backed sandwich plates in deep water.
Schiffer A, Tagarielli VL, 2014, The dynamic response of composite plates to underwater blast: Theoretical and numerical modelling, International Journal of Impact Engineering, Vol: 70, Pages: 1-13, ISSN: 1879-3509
Analytical models are developed to predict the response of circular, fully clamped, orthotropic elastic plates to loading by a planar, exponentially decaying shock wave in water. The models consider the propagation of flexural waves in the plates as well as fluid–structure interaction prior and subsequent to water cavitation. The analytical predictions are compared to those of detailed dynamic FE simulations and the two are found in good agreement. It is shown that an impulsive description of the loading can lead to large errors. A comparison of the responses of cross-ply and quasi-isotropic laminates shows that the composite layup has a minor influence on the underwater blast performance. Design charts are constructed and used to determine plate designs which maximise the resistance to underwater blast for a given mass.
Schiffer A, Tagarielli VL, 2013, The one-dimensional response of a water-filled double hull to underwater blast: Experiments and simulations, International Journal of Impact Engineering, Vol: 63, Pages: 177-187, ISSN: 1879-3509
Laboratory-scale fluid–structure interaction (FSI) experiments and finite element (FE) simulations are performed to examine the one-dimensional blast response of double-walled hulls, consisting of two skins sandwiching a layer of water. Both monolithic and sandwich designs are considered for the outer skin. Experiments are conducted in a transparent shock tube which allows measurements of water cavitation and hull response by high-speed photography. Experiments and FE predictions are found in good agreement and allow concluding that the impulse imparted to double hulls by underwater explosions can be dramatically reduced by employing the sandwich construction of the outer skin; such reductions are scarcely sensitive to the thickness of the water layer.
Schiffer A, Tagarielli VL, Petrinic N, et al., 2012, The response of rigid plates to deep water blast: analytical models and finite element predictions, Journal of Applied Mechanics, Vol: 79, Pages: 061014-061014
One-dimensional analytical models and finite element calculations are employed to predict the response of a rigid plate, supported by a linear spring, to loading by a planar pressure shock wave traveling in water or in a similar inviscid liquid. Two problems are considered: (i) a spring-supported rigid plate in contact with fluid on one side and (ii) a spring-supported rigid plate in contact with fluid on both sides; for both problems, plates are loaded by an exponentially decaying shock wave from one side. Cavitation phenomena in the liquid, as well as the effect of the initial static fluid pressure, are explicitly included in the analytical models and their predictions are found to be in excellent agreement with those from FE calculations. The validated analytical models are used to determine the sensitivity of the plate’s response to mass, spring stiffness and initial static pressure.
Arezoo S, Tagarielli VL, Siviour CR, et al., 2012, Compressive deformation of Rohacell foams: effects of strain rate and temperature, International Journal of Impact Engineering, Vol: 51, Pages: 50-57, ISSN: 0734-743X
Uniaxial compression experiments have been performed on four different densities of Rohacell foam. The experiments explored the sensitivity of the response to the imposed strain rate (in the range 10−3 to 5 × 103 s−1) and temperature (203–473 K). The compressive collapse stress is generally found to increase with increasing strain rate and decreasing temperature; however this tendency is inverted at very low temperatures or very high strain rates. This behaviour is mainly due to embrittlement of the parent polymer but is also related to the details of the foams' microstructures. Time–temperature superposition is employed to map the temperature sensitivity of the foams to their strain rate dependence. A simple design formula is provided to predict the foam stiffness as a function of temperature and relative density.
Schiffer A, Tagarielli VL, 2012, The response of rigid plates to blast in deep water: fluid–structure interaction experiments, Proceedings of the Royal Society A: Mathematical, Physical & Engineering Sciences, Vol: 468, Pages: 2807-2828, ISSN: 1471-2946
Laboratory-scale dynamic experiments are performed in order to explore the one-dimensionalresponse of unsupported rigid plates to loading by exponentially decaying planar shock wavesin deep water. Experiments are conducted in a transparent shock tube allowing measurementsof plate motion and imparted impulse, as well as observation of cavitation in water, includingmotion of breaking fronts and closing fronts. Loading of both air-backed and water-backedrigid plates is examined, and the sensitivity of plate motion and imparted impulse to thestructural mass and to the initial hydrostatic pressure in the water is measured. Experimentsalso serve to validate recently developed theoretical models, whose predictions are found inagreement with measurements.
Schiffer A, Tagarielli VL, Cocks ACF, et al., 2012, The Response of Composite Plates to Underwater Blast, Pages: 749-758
Baker SE, Ellwood SA, Tagarielli VL, et al., 2012, Mechanical performance of rat, mouse and mole spring traps, and possible implications for welfare performance, PloS one, Vol: 7, Pages: e39334-e39334
Siegkas P, Tagarielli VL, Petrinic N, et al., 2012, Rate Dependence of the Compressive Response of Ti Foams, Metals, Vol: 2, Pages: 229-237
Siegkas P, Tagarielli V, Petrinic N, et al., 2012, Rate Dependency of the Response of Ti Foams in Compression, 7th International Conference on Porous Metals and Metal Foams, Publisher: GS INTERVISION, Pages: 661-666
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Tagarielli VL, Hildick-Smith R, Huber JE, 2012, Electro-mechanical properties and electrostriction response of a rubbery polymer for EAP applications, International Journal of Solids and Structures, Vol: 49, Pages: 3409-3415
Barbieri E, Petrinic N, Meo M, et al., 2012, A new weight-function enrichment in meshless methods for multiple cracks in linear elasticity, International Journal for Numerical Methods in Engineering, Vol: 90, Pages: 177-195
Tagarielli VL, Fleck NA, 2011, The shear response of a thin aluminum layer, Journal of Applied Mechanics, Vol: 78, Pages: 014505-014505
Arezoo S, Tagarielli VL, Petrinic N, et al., 2011, The mechanical response of Rohacell foams at different length scales, Journal of materials science, Pages: 1-8
Siegkas P, Tagarielli VL, Petrinic N, et al., 2011, The compressive response of a titanium foam at low and high strain rates, Journal of Materials Science, Vol: 46, Pages: 2741-2747
Arezoo S, Tagarielli VL, Petrinic N, et al., 2011, The mechanical response of Rohacell foams at different length scales, Journal of materials science, Vol: 46, Pages: 6863-6870
Tagarielli VL, Fleck NA, Colella A, et al., 2011, Mechanical properties and deformation mechanisms of nanocrystalline Fe/Cu 60/40 composites, Journal of Materials Science, Vol: 46, Pages: 385-393
Tagarielli VL, Minisgallo G, McMillan AJ, et al., 2010, The response of a multi-directional composite laminate to through-thickness loading, Composites science and technology, Vol: 70, Pages: 1950-1957
Tagarielli VL, Deshpande VS, Fleck NA, 2010, Prediction of the dynamic response of composite sandwich beams under shock loading, International Journal of Impact Engineering, Vol: 37, Pages: 854-864
Tagarielli VL, Deshpande VS, Fleck NA, 2008, The high strain rate response of PVC foams and end-grain balsa wood, Composites Part B: Engineering, Vol: 39, Pages: 83-91
Tagarielli VL, Deshpande VS, Fleck NA, 2007, The dynamic response of composite sandwich beams to transverse impact, International Journal of Solids and Structures, Vol: 44, Pages: 2442-2457
Tagarielli VL, Deshpande VS, Fleck NA, et al., 2005, A constitutive model for transversely isotropic foams, and its application to the indentation of balsa wood, International Journal of Mechanical Sciences, Vol: 47, Pages: 666-686
Tagarielli VL, Fleck NA, 2005, A comparison of the structural response of clamped and simply supported sandwich beams with aluminium faces and a metal foam core, Journal of applied mechanics, Vol: 72, Pages: 408-417
Tagarielli VL, 2005, The static and dynamic response of sandwich beams to transverse loading
Tagarielli VL, Fleck NA, Deshpande VS, 2004, The collapse response of sandwich beams with aluminium face sheets and a metal foam core, Advanced Engineering Materials, Vol: 6, Pages: 440-443
Tagarielli VL, Fleck NA, Deshpande VS, 2004, Collapse of clamped and simply supported composite sandwich beams in three-point bending, Composites Part B: Engineering, Vol: 35, Pages: 523-534
Ciavarella M, Decuzzi P, Tagarielli VL, et al., 2003, Analisi termo-elastica di rivestimenti multistrato, AIAS conference
Fleck NA, Tagarielli V, Radford D, et al., 2003, Dynamic loading of composite sandwich beams, ASME International Mechanical Engineering Congress
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