Results 61 to 70 of about 4,342 (233)
The Astrophysical Journal Supplement Series, 1991 Two new methods of analysis for solar seismology, called the continuous orthonormalization (CON) and adjoint methods, are developed. Their use enables both solar eigenfrequencies and eigenfrequency sensitivities (partial derivatives with respect to solar model parameters) to be computed more accurately and efficiently than with existing methods.
R. D. Rosenwald, G. F. Rabaey
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Explaining the Origin of Negative Poisson's Ratio in Amorphous Networks With Machine Learning
Advanced Intelligent Discovery, EarlyView.This review summarizes how machine learning (ML) breaks the “vicious cycle” in designing auxetic amorphous networks. By transitioning from traditional “black‐box” optimization to an interpretable “AI‐Physics” closed‐loop paradigm, ML is shown to not only discover highly optimized structures—such as all‐convex polygon networks—but also unveil hidden ...
Shengyu Lu, Xiangying Shen
wiley +1 more source
Equilibrium Propagation for Dissipative Dynamics
Advanced Intelligent Systems, EarlyView.This work develops local learning rules for damped linear dynamical systems, including mechanical structures and resistor‐inductor‐capacitor (RLC) circuits, by leveraging an effective action formulation. It demonstrates how physical systems can autonomously compute gradients and learn temporal patterns, enabling applications such as sound ...
Marc Berneman, Daniel Hexner
wiley +1 more source
RESEARCH REGARDING THE MODAL PARAMETERS IDENTIFICATION FOR METALLIC STRUCTURES (II) [PDF]
Fiabilitate şi Durabilitate, 2012 Starting from the theoretical background written in [1], we present the package programs software realized by the authors for modal parameters identification of this kind of structures.
Dan ILINCIOIU +2 more
doaj
Surface Charges Guided Quasi‐TEM‐mode Microwave Propagation along Dielectric Nanowire
Advanced Physics Research, EarlyView.According to Maxwell's equations, a single‐conductor transmission line cannot allow TEM‐mode electromagnetic wave propagation, however, this is based upon the assumption that dielectric material is isolated from the environment. In practice, surface electrostatic charges widely existed in nano‐materials with large surface‐to‐volume ratio.
BoYan Xu +7 more
wiley +1 more source
Estimation of the nuclear fuel assembly eigenfrequencies in the probability sense
Applied and Computational Mechanics, 2014 The paper deals with upper and lower limits estimation of the nuclear fuel assembly eigenfrequencies, whose design and operation parameters are random variables.
Zeman V., Hlaváč Z.
doaj
Effect of intermediate supports location on natural frequencies of multiple cracked continuous beams
Vietnam Journal of Mechanics, 2018 The present paper deals with free vibration of multiple cracked continuous beams with intermediate rigid supports. A simplified method is proposed to obtain general solution of free vibration in cracked beam with intermediate supports that is then used ...
Do Nam +4 more
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Eigenfrequencies of fractal drums
Journal of Computational and Applied Mathematics, 2007 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Eigenfrequencies of generally restrained beams [PDF]
Journal of Applied Mathematics, 2003 We deal with the exact determination of eigenfrequencies of a beam with intermediate elastic constraints and generally restrained ends. It is the purpose of this paper to use the calculus of variations to obtain the equations of motion and the natural boundary conditions, and particularly those at the intermediate constraints.
Grossi, Ricardo Oscar +1 more
openaire +4 more sources
Modeling and Output Optimization of Triboelectric Microphone for Acoustic Energy Harvesting
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.This work elucidates the fundamental multiphysics coupling mechanisms governing acoustic T‐phone, providing a critical theoretical foundation and a predictive design paradigm for the future engineering and deployment of next‐generation, self‐powered acoustic sensors.
Dan Liu +6 more
wiley +1 more source