Results 41 to 50 of about 24,545 (231)

A Numerical Investigation of Deformed Region in Plate Specimen of Split-Hopkinson Tensile Bar [PDF]

open access: yes한국정밀공학회지
In Hopkinson bar theory, stress, strain, and strain rate can be determined by analyzing the dimensions of the specimen. When conducting Split-Hopkinson Pressure Bar (SHPB) experiments, the stress-strain curve is obtained by considering the entire length ...
Byeongjin Park, Yeon-Bok Kim, Jeong Kim
doaj   +1 more source

Briefing: UK Ministry of Defence Force Protection Engineering Programme [PDF]

open access: yes, 2013
The Defence Science and Technology Laboratory sponsored, QinetiQ-led Force Protection Engineering Research Programme has two main strands, applied and underpinning research. The underpinning strand is led by Blastech Ltd.
Andrew Jardine   +9 more
core   +1 more source

Investigation into dynamic response of a three-point bend specimen in a Hopkinson bar loaded fracture test using numerical methods

open access: yesAdvances in Mechanical Engineering, 2015
Dynamic fracture toughness of engineering materials at loading rates greater than 10 6 MPa m / s is widely investigated using the modified Hopkinson pressure bar apparatus.
Raja Ahsan Javed   +4 more
doaj   +1 more source

SPH method applied to high speed cutting modelling [PDF]

open access: yes, 2007
The purpose of this study is to introduce a new approach of high speed cutting numerical modelling. A Lagrangian smoothed particle hydrodynamics (SPH)- based model is arried out using the Ls-Dyna software.
Chieragatti, Rémy   +4 more
core   +3 more sources

A dynamic calibration method of free-field pressure sensor based on Hopkinson bar

open access: yesAIP Advances, 2020
This paper presents a dynamic calibration method for the dynamic sensitivity coefficient of a free-field pressure sensor working in liquid. In this method, an oil-filled auxiliary tool has been designed and the free-field pressure sensor sealed in the ...
Wen Liang, Rong Chen, Yuwu Zhang
doaj   +1 more source

Texture Evolution of AZ31 Magnesium Alloy Sheet at High Strain Rates [PDF]

open access: yes, 2010
In the current contribution the mechanical behaviour at high strain rates of AZ31 magnesium alloy sheet is studied. Uniaxial deformation properties were studied by means of tensile split Hopkinson pressure bar (SHPB) at different temperatures.
Dudamell, N.V.   +6 more
core   +2 more sources

On backward dispersion correction of Hopkinson pressure bar signals [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2014
Elastic theory shows that wide spectrum signals in the Hopkinson pressure bar suffer two forms of distortion as they propagate from the loaded bar face. These must be accounted for if accurate determination of the impact load is to be possible. The first form of distortion is the well-known phase velocity dispersion effect.
A, Tyas, Z, Ozdemir
openaire   +2 more sources

Numerical study of the influence of the specimen geometry on split Hopkinson bar tensile test results [PDF]

open access: yes, 2009
Finite element simulations of high strain rate tensile experiments oil sheet materials using different specimen geometries are presented. The simulations component ail experimental study, using a split Hopkinson tensile bar set-up, Coupled with a.
Degrieck, Joris   +3 more
core  

Beyond CO2: Incorporating Bicarbonate, Dynamic Carbon Speciation, and Stoichiometric Plasticity Into Algal Growth Models

open access: yesBiotechnology and Bioengineering, EarlyView.
ABSTRACT The design of biological carbon capture systems to uptake carbon dioxide by photoautotrophic cultivation of algae has been proposed to mitigate atmospheric carbon emissions. Multiple models to predict algal growth as a function of nutrients have been proposed, but few have delved into the complex dynamic reactions of algal growth as influenced
Elizabeth Flanagan   +2 more
wiley   +1 more source

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