Results 41 to 50 of about 153,898 (342)
Minimizing Communication in the Multidimensional FFT [PDF]
SIAM Journal on Scientific Computing, 2023 Abstract. We present a parallel algorithm for the fast Fourier transform (FFT) in higher dimensions. This algorithm generalizes the cyclic-to-cyclic one-dimensional parallel algorithm to a cyclic-to-cyclic multidimensional parallel algorithm while retaining the property of needing only a single all-to-all communication step.
Thomas Koopman, Rob H. Bisseling
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Signal Processing Displayed on a Spectrogram
Revista Elektrón, 2020 This paper describes the implementation of a digital spectrogram on an embedded system, with the aim of allowing the visualization of the effects of applying digital filters and Fast Fourier Transform over a signal. The FreeRTOS operating system was used
Martin Ezequiel Paz +2 more
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FFT-Based Methods for Computational Contact Mechanics
Frontiers of Mechanical Engineering, 2020 Computational contact mechanics seeks for numerical solutions to contact area, pressure, deformation, and stresses, as well as flash temperature, in response to the interaction of two bodies.
Q. Wang +4 more
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Simulation of the Hall-Petch effect in FCC polycrystals by means of strain gradient crystal plasticity and FFT homogenization [PDF]
Journal of the mechanics and physics of solids, 2019 The influence of grain size on the flow stress of various FCC polycrystals (Cu, Al, Ag and Ni) has been analyzed by means of computational homogenization of a representative volume element of the microstructure using a FFT approach in combination with a ...
S. Haouala +3 more
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Proceedings of the 2017 ACM International Symposium on Symbolic and Algebraic Computation, 2017 Let Fq be the finite field with q elements and let ω be a primitive n-th root of unity in an extension field Fqd of Fq. Given a polynomial P ∈ Fq [x] of degree less than n, we will show that its discrete Fourier transform (P (ω0), ..., P (ωn - 1)) ∈ Fqdn can be computed essentially d times faster than the discrete Fourier transform of a polynomial Q ...
van der Hoeven, Joris, Larrieu, Robin
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Structural Control & Health Monitoring, 2020 Damage detection is one important target in structural health monitoring (SHM). Vibration‐based damage detection has attracted more attention in the past decades by tracking the modal parameter changes of objective structures.
Feng-Liang Zhang, Chul-Woo Kim, Y. Goi
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Perbandingan Eksperimental dan Simulasi Frekuensi Pribadi pada Struktur Spindel CNC
Rekayasa Mesin, 2020 The Research was about the comparison between experiment and simulation of natural frequency in CNC spindle. CNC spindle vibration will reduce machine tool performance. It could lead to the damage of the machine tool.
Hendri Van Hoten +3 more
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SIGNAL ACQUISITION FOR SOFTWARE-DEFINED GPS RECEIVER
ICTACT Journal on Communication Technology, 2022 Signal acquisition plays important role in the estimation of navigation solutions as precise values of code phase and carrier frequency yield more accurate results in positioning systems.
Vijay Mane +2 more
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A FFT solver for variational phase-field modeling of brittle fracture
Computer Methods in Applied Mechanics and Engineering, 2019 The variational phase-field method is an attractive non-local approach of modeling fracture in heterogeneous materials. However, these materials usually require a fine mesh to resolve the fracture process zone.
Yang-Shiau Chen +3 more
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, 2007 The split-radix FFT computes a size-n complex DFT, when n is a large power of 2, using just arithmetic operations on real numbers. This operation count was first announced in 1968, stood unchallenged for more than thirty years, and was widely believed to be best possible. Recently James Van Buskirk posted software demonstrating that the split-radix FFT
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