Results 31 to 40 of about 11,348 (228)
Implementation of viscoelastic Hopkinson bars
EPJ Web of Conferences, 2012 Knowledge of the properties of soft, viscoelastic materials at high strain rates are important in furthering our understanding of their role during blast or impact events.
Govender R., Cloete T., Curry R.
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Numerical Modeling of a Split Hopkinson Pressure Bar Test
European Journal of Engineering and Technology Research, 2021 In this work, a one-dimensional simplified model was developed to predict stress, strain, and strain-rate in high strain rates Hopkinson pressure bar experiments, namely, between 500-5000/s. To this goal, a one-dimensional model for Hokinson bar tests was developed based on analyses of wave propagation in bars and assuming the specimen is under ...
Ahmad R. Aljohani +2 more
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Impact Testing of 3D Re-Entrant Honeycomb Polyamide Structure Using Split Hopkinson Pressure Bar
Applied Sciences, 2021 In this study, a total of 30 3D re-entrant honeycomb specimens made of polyamide were fabricated with various configurations by using the additive manufacturing (AM) technique.
Jiangping Chen, Weijun Tao, Shumeng Pang
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One-dimensional dynamic compressive behavior of dry calcareous sand at high strain rates
Journal of Rock Mechanics and Geotechnical Engineering, 2019 Calcareous sand has distinct characteristics in comparison with silica sand, such as dynamic behavior at high strain rates (HSRs). This is closely related to pile driving, aircraft wheel loading and mining activities.
Yaru Lv, Jiagui Liu, Ziming Xiong
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Size Effect in the Split Hopkinson Pressure Bar Experiment
Journal of Physics: Conference Series, 2022 Abstract For many structures, their service environment is very strict, and the requirements for the impact resistance of materials are very high. Therefore, the dynamic testing method has important scientific significance and application value for practical engineering.
Hailiang Nie +7 more
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Stress Equilibrium in the Split Hopkinson Pressure Bar Test [PDF]
Le Journal de Physique IV, 1997 The compressive split Hopkinson pressure bar (SHPB) technique allows the stresses on each end of the specimen to be measured individually. Results are presented showing a large difference between these end pressures, depending on specimen length and loading rate. The mechanisms responsible are show to be a combination of inertial forces and non-uniform
Wu, X., Gorham, D.
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Applied Sciences, 2020 The effect of using a pulse shaper technique, such as rounding a striker or applying a pulse shaper on the signals recorded with the split Hopkinson pressure bar (SHPB) technique, when the striker and the input bar are in an imperfect position, was ...
R. Panowicz, M. Konarzewski
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Archives of Metallurgy and Materials, 2017 The paper presents the results of investigation on X30MnAlSi26-4-3 austenitic steel subjected to dynamic compression using the split Hopkinson pressure bar. The strain rate was 3700 s−1.
Śmiglewicz A. +4 more
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Adaptive Twisting Metamaterials
Advanced Materials, EarlyView.This work introduces torque‐controlled twisting metamaterials as a transformative platform for adaptive crashworthiness. By combining multiscale predictive modeling with experimental validation on additively manufactured gyroids, it demonstrates tunable stiffness, collapse stress, and energy absorption.
Mattia Utzeri +6 more
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Commissioning of universal Split Hopkinson Bar for dynamic compression and tension experiments
Acta Polytechnica CTU ProceedingsSplit Hopkinson Bar is an experimental apparatus designed for acquiring material properties in dynamic regime. The apparatus is usually constructed as a single purpose experimental device for specific type of loading, most commonly either compression ...
Lukáš Kocian +4 more
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