Results 41 to 50 of about 5,560 (227)

Effects of Varied Shear Correction on the Thermal Vibration of Functionally-Graded Material Shells in an Unsteady Supersonic Flow

Aerospace, 2017
A model is presented for functionally-graded material (FGM), thick, circular cylindrical shells under an unsteady supersonic flow, following first-order shear deformation theory (FSDT) with varied shear correction coefficients. Some interesting vibration
Chih Chiang Hong
doaj   +1 more source

Generalized Twisted Gabidulin Codes

, 2018
Let $\mathcal{C}$ be a set of $m$ by $n$ matrices over $\mathbb{F}_q$ such that the rank of $A-B$ is at least $d$ for all distinct $A,B\in \mathcal{C}$. Suppose that $m\leqslant n$.
Lunardon, Guglielmo, Trombetti, Rocco, Zhou, Yue   +2 more
core   +1 more source

Mechanism and Control Analysis of Synchronous Frequency Resonance in Distributed Power Generation System Connected to Grid

Energy Science &Engineering, EarlyView.
Small‐signal modeling reveals that insufficient system damping positions conjugate poles near the imaginary axis, fundamentally explaining the SFR mechanism. A virtual resistance control is consequently proposed to damp the resonance and effectively suppress SFR, which is validated through Hardware‐in‐the‐Loop experiments.
Yujie Gu, Jianbo Yi, Haoran Rui, Qi Huang   +3 more
wiley   +1 more source

Advanced Dynamic Responses of Thick FGM Spherical Shells Analyzed Using TSDT Under Thermal Vibration

Computation
The effect of third-order shear deformation theory (TSDT) on thick functionally graded material (FGM) spherical shells under sinusoidal thermal vibration is investigated by using the generalized differential quadrature (GDQ) numerical method.
Chih-Chiang Hong
doaj   +1 more source

A comparative study on the effect of SMAs and CNTs on the vibration of composite plates exposed to thermal environments

Case Studies in Thermal Engineering, 2022
The main purpose of this study is to compare the effects of two advanced materials, namely shape memory alloys (SMAs) and carbon nanotubes (CNTs) on the fundamental natural frequencies of rectangular graphite fiber/epoxy (GF/EP) composite plates.
Saeed Kamarian, Jung-il Song
doaj   +1 more source

Pauli graphs, Riemann hypothesis, Goldbach pairs [PDF]

, 2011
Let consider the Pauli group $\mathcal{P}_q=$ with unitary quantum generators $X$ (shift) and $Z$ (clock) acting on the vectors of the $q$-dimensional Hilbert space via $X|s> =|s+1>$ and $Z|s> =\omega^s |s>$, with $\omega=\exp(2i\pi/q)$.
A. Vourdas, D. Golstein Brouwers van, F. Anselmi, G. H. Hardy, H. Havlicek, H. L. Montgomery, J. H. Conway, J. Sándor, J.-L. Nicolas, J.-M. Deshouillers, M. Planat, M. Planat, M. Planat, M. Planat, M. Saniga, O. Albouy, P. Solé, P. Solé   +17 more
core   +3 more sources

CNT-woven glass fiber laminated composite for folded plate application: 2D-GDQ and experimental study

Archives of Civil and Mechanical Engineering
The advantages of carbon nanotubes (CNTs) in fortifying the glass fiber reinforced polymeric (GFRP) composites are discussed in this paper. Bolted steel straps are utilized at the edges of composite plate to establish clamped conditions in the test setup.
Ali Heidari-Soureshjani, Esmail Asadi, R. Talebitooti   +2 more
semanticscholar   +1 more source

Advanced Dynamic Vibration Control Algorithms of Materials Terfenol-D Si₃N₄ and SUS304 Plates/Cylindrical Shells with Velocity Feedback Control Law

Algorithms
A numerical, generalized differential quadrature (GDQ) method is presented on applied heat vibration for a thick-thickness magnetostrictive functionally graded material (FGM) plate coupled with a cylindrical shell.
Chih-Chiang Hong
doaj   +1 more source

A Variational Principle for the Asymptotic Speed of Fronts of the Density Dependent Diffusion--Reaction Equation

, 1994
We show that the minimal speed for the existence of monotonic fronts of the equation $u_t = (u^m)_{xx} + f(u)$ with $f(0) = f(1) = 0$, $m >1$ and $f>0$ in $(0,1)$ derives from a variational principle.
A. Kolmogorov, D. G. Aronson, D. G. Aronson, D. G. Aronson, J. J. E. Herrera, L. E. Vulis, M. C. Depassier, R. D. Benguria, R. D. Benguria, S. K. Scott, W. I. Newman, W. I. Newman   +11 more
core   +1 more source

Tailoring the Properties of Functional Materials With N‐Oxides

Advanced Functional Materials, Volume 36, Issue 17, 26 February 2026.
The properties of materials bearing N‐oxide groups are often dominated by the polar N+─O− bond. It provides hydrophilicity, selective ion‐binding, electric conductivity, or antifouling properties. Many of the underlying mechanisms have only recently been discovered, and the interest in N‐oxide materials is rapidly growing.
Timo Friedrich, Michelle Kobus, Shirin Mesgarha, Erica Moretto, Laurens Grosche, Wolfgang Maison   +5 more
wiley   +1 more source