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Wyszukujesz frazę "Li, Zhe" wg kryterium: Autor

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    Wyświetlanie 1-4 z 4
    Tytuł:
    Magneto-elastic combined multidimensional resonance of a rotating circular plate in a double-direction magnetic field
    Autorzy:
    Li, Zhe
    Hu, Yu Da
    Li, Wen Qiang
    Powiązania:
    https://bibliotekanauki.pl/articles/281123.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
    Tematy:
    magneto-elastic
    annular plate
    multi-dimensional vibration
    combination resonance
    the method of multiple scales
    Opis:
    Magneto-elastic nonlinear non-axisymmetric resonance is investigated for a rotating annular plate in a double-direction magnetic field. According to transverse and longitudinal magneto- -elastic non-axisymmetric vibration equations of the thin annular plate, and considering the influence of the static load term, non-axisymmetric vibration differential equations by combined parametric and forced excitations are obtained through application of the Galerkin method. Then, the method of multiple scales is applied to solve differential vibration equations. By numerical computations, the influence of magnetic induction intensity, inner and outer diameters, excitation and radial forces on transverse and longitudinal resonance characteristics are analyzed.
    Źródło:
    Journal of Theoretical and Applied Mechanics; 2019, 57, 4; 883-895
    1429-2955
    Pojawia się w:
    Journal of Theoretical and Applied Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Photoemission Study of the Initial Growth of Co on Ru(0001)
    Autorzy:
    Godowski, P. J.
    Onsgaard, J. J.
    Trzebiatowska-Gusowska, M. J.
    Pater, K. J.
    Li, Zhe
    Powiązania:
    https://bibliotekanauki.pl/articles/2047268.pdf
    Data publikacji:
    2007-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    79.60.Dp
    79.60.Jv
    68.55.Jk
    Opis:
    The growth process of cobalt on Ru(0001) was characterized by photoelectron spectroscopy excited by X-ray and synchrotron radiation. The binding energy position and intensity of the Co 2p$\text{}_{3}\text{}_{/}\text{}_{2}$ and Ru 3d$\text{}_{5}\text{}_{/}\text{}_{2}$ core levels as well as the shape and structure of the valence band spectra corresponding to the different stages of the deposition were investigated. An observed small positive binding energy shift is a consequence of an increase in the cobalt adatoms coordination number. The core-level shift between bulk and surface Ru atoms is determined as -360 meV. Upon adsorption of cobalt, the interface peak appears with a shift of -(70÷80) meV relative to the bulk one. On the basis of unchanged energy positions and widths of the Ru-derived features of the valence band spectra, a weak interaction between cobalt and substrate is suggested. The measured valence band could be reproduced by superimposing the spectra of the pure elements.
    Źródło:
    Acta Physica Polonica A; 2007, 111, 2; 263-271
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Design and mechanical analysis of a composite T-type connection structure for marine structures
    Autorzy:
    Li, Xiaowen
    Zhu, Zhaoyi
    Li, Yan
    Hu, Zhe
    Powiązania:
    https://bibliotekanauki.pl/articles/260625.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    T-type connection structure
    composite structure design
    test
    mechanical analysis
    marine structure
    Opis:
    A new T-type connection structure consisting of composite sandwich plates, reinforced cores and adhesive was proposed for the construction of lightweight ships to resolve connection problems between bulkheads and decks of composite lightweight ship superstructures. Based on the design principles and mechanical properties of composite structures, the mechanical behaviour of the structure under a dangerous loading condition was investigated. In addition, the ultimate bearing capacities and damage modes were examined, the results of which demonstrated that the strength of the structure is weak, and that the adhesive and reinforced core between the face plate and the web plate is the primary weakness of the structure. A numerical simulation method was verified using the results of the mechanical tests, and five characteristic paths at the connection area were established. The stresses and displacements along the five paths were calculated using the numerical method. Then, variations in the geometric parameter and the strength and weight of the connection were summarised. The optimal angle of the adhesive bonding area is approximately 60°, which supports the optimal design and practical application of the lightweight ship adhesive-bonded connection structure.
    Źródło:
    Polish Maritime Research; 2020, 2; 145-157
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Image compression and encryption algorithm based on advanced encryption standard and hyper-chaotic system
    Autorzy:
    Nie, Zhe
    Liu, Zheng-Xin
    He, Xiang-Tao
    Gong, Li-Hua
    Powiązania:
    https://bibliotekanauki.pl/articles/174108.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    hyper-chaotic system
    advanced encryption standard
    discrete cosine transform
    image encryption
    image compression
    Opis:
    An image compression and encryption algorithm by combining the advanced encryption standard (AES) with the hyper-chaotic system is designed, in which Arnold map is employed to eliminate part of the block effect in the image compression process. The original image is compressed with the assistance of a discrete cosine transform and then its transform coefficients are encrypted with the AES algorithm. Besides, the hyper-chaotic system is adopted to introduce the nonlinear processfor image encryption. Numerical simulations and theoretical analyses demonstrate that the proposed image compression and encryption algorithm is of high security and good compression performance.
    Źródło:
    Optica Applicata; 2019, 49, 4; 545-558
    0078-5466
    1899-7015
    Pojawia się w:
    Optica Applicata
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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