Searched for: subject%3A%22Re%255C-entrant%22
(1 - 8 of 8)
document
Beikmirza, M.R. (author), Shen, Y. (author), de Vreede, L.C.N. (author), Alavi, S.M. (author)
This article presents a wideband, energy-efficient digital transmitter (DTX) suitable for multi-mode/multi-band wireless communication applications. It features various operation modes comprising Cartesian (Modes-1/-2) and multi-phase (Modes-3/-4) configurations utilizing LO clocks with different duty cycle in the interleaving/non...
journal article 2023
document
Eigbe, E. (author), De Schutter, B.H.K. (author), Nasri, Mitra (author), Yorke-Smith, N. (author)
Industrial and academic interest converge on scheduling flow shops with sequence- and time-dependent maintenance. We posit that anticipatory, integrated scheduling of operational and maintenance tasks leads to superior performance to purely 'wait-then-fix' handling of the maintenance tasks. Motivated by an industrial problem with (sequence...
journal article 2023
document
Hedayati, R. (author), Yousefi, Armin (author), Dezaki, Mohammadreza Lalegani (author), Bodaghi, Mahdi (author)
Both 2D and 3D re-entrant designs are among the well-known prevalent auxetic structures exhibiting negative Poisson's ratio. The present study introduces novel analytical relationships for 2D re-entrant hexagonal honeycombs for both negative and positive ranges of the cell interior angle θ (θ<0 showing a negative Poisson's ratio). The...
journal article 2023
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Ghavidelnia, Naeim (author), Bodaghi, Mahdi (author), Hedayati, R. (author)
Mechanical metamaterials are man-made rationally-designed structures that present un-precedented mechanical properties not found in nature. One of the most well-known mechanical metamaterials is auxetics, which demonstrates negative Poisson’s ratio (NPR) behavior that is very beneficial in several industrial applications. In this study, a...
journal article 2021
document
Khoshgoftar, Mohammad Javad (author), Barkhordari, Ali (author), Seifoori, Sajjad (author), Mirzaali, Mohammad J. (author)
The re-entrant structures are among the simple unit cell designs that have been widely used in the design of mechanical metamaterials. Changing the geometrical parameters of these unit cell structures, their overall elastic properties (i.e., elastic stiffness and Poisson’s ratio), can be simultaneously tuned. Therefore, different design...
journal article 2021
document
Bhattarai, Suman (author)
Auxetic materials are increasingly used in the field of sports, defense, bio-medicine, and acoustic-filtering due to their unconventional behavior of exhibiting a negative Poisson's effect. The prospective use of auxetics to mitigate shock and impact forces have proven the relevance of research on auxetics. It becomes of paramount importance to...
master thesis 2018
document
Jahangir, S. (author), Hogendoorn, W.J. (author), Poelma, C. (author)
Partial cavitation dynamics in an axisymmetric converging-diverging nozzle are investigated experimentally. Shadowgraphy is used to visualize and analyze different cavitation regimes. These regimes are generated by changing the global static pressure and flow velocity independently. Cloud cavitation is the most interesting and complex regime,...
journal article 2018
document
Zhou, L. (author)
master thesis 2016
Searched for: subject%3A%22Re%255C-entrant%22
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