Results 71 to 80 of about 4,530 (208)

Dynamic Constitutive Model of Fractured Brittle Rock With Fillings Based on Weibull Distribution and High‐Frequency Maxwell

Shock and Vibration, Volume 2026, Issue 1, 2026.
Fractured rocks containing infill materials are frequently encountered in engineering applications, and an understanding of dynamic characteristics is crucial for assessing stability and preventing disasters in rock engineering projects. The novel feature of this paper is that a dynamic constitutive model of fractured rocks with fillings is proposed to
Liang Han, Xianqi Xie, Yingkang Yao, Wei Wang, Jiawang Hao, M.I. Herreros   +5 more
wiley   +1 more source

Wave propagation through alumina-porous alumina laminates

, 2014
A Brazilian disk geometry of an alumina layered composite with alternating dense and porous layers was dynamically loaded using a Split-Hopkinson Pressure Bar (SHPB)apparatus under compression.
Kriven, Waltraud M., Lambros, John, On, Tommy, Santos, Christian J. Espinoza, Sellappan, Pathikumar, Wang, Erheng   +5 more
core   +1 more source

Cellulose Nanocrystal‐Reinforced Waterborne Polyurethane Composites with Excellent Dynamic Impact Resistance

Macromolecular Materials and Engineering, Volume 310, Issue 12, December 2025.
The hydrogen‐bond‐enhanced CNC/WPU nanocomposites, fabricated via solution casting, exhibited a 59.6% increase in elastic modulus (5.57 ± 0.46 GPa), 29.9% higher energy absorption (165.2 ± 6.7 MJ·m−3), and a 36.21% improvement in maximum engineering stress (545.5 ± 17.5 MPa) at 0.5 wt.% CNC.
Mingping Zhou, Dingzhe Che, Shichao Zhang, Qiang Wu, Denghui Wang, Yuan Li, Fei Gao, Jiping Yang, Zheng Zhang   +8 more
wiley   +1 more source

The mechanism of rate-dependent off-axis compression of a low fibre volume fraction thermoplastic matrix composite [PDF]

, 2017
This paper reports on the mechanism of rate-dependent off-axis compression of a unique unidirectional composite with unusually high matrix volume fraction of 65%.
Ageorges, Ambrose I. Akpoyomare, Bacon, Brown, Buckley, Bussac, C. Paul Buckley, Campbell, Carrillo, Cogswell, Fitoussi, Gibson, González, Govender, Gómez-del Ŕo, Harte, Hufenbach, Hull, Joseph, Koerber, Melro, Melro, Michael I. Okereke, Miller, Mulliken, Naik, Okereke, Park, Ree, Richeton, Siviour, Siviour, Tan, Taniguchi, van Rijswijk, Wu, Yoon, Zhao   +37 more
core   +1 more source

Deformation Behaviors in Single BCC‐Phase Refractory Multi‐Principal Element Alloys under Dynamic Conditions

Advanced Science, Volume 12, Issue 36, September 25, 2025.
Exceptional mechanical stability of refractory multi‐principal element alloy (RMPEA) across various strain‐rates and temperature is studied through multiscale experiments coupled with theoretical calculations. This stability originates from competition between twinning and adiabatic heating during dynamic deformation, contributed from severe lattice ...
Chanho Lee, Deva Prasaad Neelakandan, Dongyue Xie, Juntan Li, Chia‐Yi Wu, Aomin Huang, Leeseung Kang, Shuozhi Xu, Barton C. Prorok, Dong‐Joo Kim, Marc A. Meyers, Haixuan Xu, Peter K. Liaw, Yi‐Chia Chou, Ke An, George T. Gray III, Nan Li, Gian Song, Saryu J. Fensin   +18 more
wiley   +1 more source

Impact testing of polymeric foam using Hopkinson bars and digital image analysis [PDF]

, 2014
International audienceThis paper has investigated the impact testing method on the polymeric foams using digital image correlation. Accurate average stress-strain relations can be obtained when soft large diameter polymeric pressure bars and appropriate ...
Liu, Jiagui, Pattofatto, Stéphane, Saletti, Dominique, Zhao, Han   +3 more
core   +3 more sources

High Strain Rate Response of Sandstones with Different Porosity under Dynamic Loading Using Split Hopkinson Pressure Bar (SHPB)

Applied Sciences
This article presents the results of dynamic tests of sandstone samples differing in strength parameters and porosity, which were carried out with the use of the split Hopkinson pressure bar (SHPB). For this study, three types of sandstones were considered: two from the region of India (Kandla Grey and Apricot Pink) and one from Central Europe (Barwald)
Grzegorz Stopka, Roman Gieleta, Robert Panowicz, Daniel Wałach, Grzegorz Piotr Kaczmarczyk   +4 more
openaire   +2 more sources

A review of multiscale numerical modeling of rock mechanics and rock engineering

Deep Underground Science and Engineering, Volume 4, Issue 3, Page 382-405, September 2025.
Multiscale numerical methods of rock mechanics and rock engineering are reviewed, and the review results show that more attention should be paid to the development of an advanced constitutive model in addition to numerical techniques themselves. Abstract Rock is geometrically and mechanically multiscale in nature, and the traditional phenomenological ...
Xindong Wei, Zhe Li, Gaofeng Zhao
wiley   +1 more source

Dynamic Compression of a Brittle Spherical Specimen

Engineering Transactions, 1994
The dynamic compression process of a spherical specimen made of a brittle material in the split Hopkinson pressure bar (SHPB) is described. The aim of the present paper is to determine the stress distribution over a spherical surface as a result of ...
W.K. Nowacki
doaj  

PREPROCESSING OF HOPKINSON BAR EXPERIMENT DATA: FILTER ANALYSIS

Acta Polytechnica CTU Proceedings, 2018
This work presents a data preprocessing procedure for signal acquired during high strain-rate loading using a custom Split Hopkinson Pressure Bar (SHPB).
Marcel Adorna, Jan Falta, Tomáš Fíla, Petr Zlámal   +3 more
doaj   +1 more source