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RISS 인기검색어
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- 저자 : Yane Gao (검색결과 3 건)
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Dong Liang,Bingkui Chen,Yane Gao 한국정밀공학회 2015 International Journal of Precision Engineering and Vol. No.
Theoretical and experimental investigations on parallel-axis gears with tubular meshing surfaces are performed in this study. Based on theory of conjugate curves, the parametric design for tubular tooth profiles is provided and solid models are established for motion simulation. Tubular meshing surfaces are evaluated according to geometric and meshing characteristics including undercutting condition, interference with engagement and curvature, calculation of sliding ratios, and successive meshing property. The meshing essence of tubular tooth surfaces is determined. The mechanics properties of tooth surfaces are analyzed using the finite element method. The contact stress, meshing law and deformation analysis of tooth surfaces are presented. The transmission efficiency experiment is based on the developed gear prototype, and a comparison of the prototype with an involute gear drive is provided. Further research on the dynamics analysis and key manufacturing technology will be conducted, and this gear drive is expected to exhibit excellent transmission performance.
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Hobbing Manufacturing of New Type of Involute-Helix Gears for Wind Turbine Gearbox
Dong Liang,Bingkui Chen,Yane Gao 한국정밀공학회 2019 International Journal of Precision Engineering and Vol.6 No.2
The involute gears are widely used in the gearbox for wind turbine. To satisfy the requirements of reduction of noise and increase of the endurance of the gear drive, the new type of involute-helix gears, which have the advantages of involute gears and circular arc gears, had been proposed. In this paper, the hobbing cutters of involute-helix gears are designed utilizing the normal section of convex and concave tooth profiles, respectively. Mathematical models of hobbing cutters are established and general products are also manufactured. Using the developed hobbing cutters, the proposed gear pair is manufactured based on the numerical control technology. Combining with the measure method of gear measuring center and the characteristic of the investigated gears, the method of error measurement of special tooth profiles is provided. The further development of special detection software for the gears will be carried out. The results will lay the foundations for the large-scale industrial practice and production applications of gear drive.
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Hasseldine, Benjamin P.J.,Gao, Chao,Collins, Joseph M.,Jung, Hyun-Do,Jang, Tae-Sik,Song, Juha,Li, Yaning Elsevier 2017 Journal of the mechanical behavior of biomedical m Vol.73 No.-
<P><B>Abstract</B></P> <P>The common millet (<I>Panicum miliaceum</I>) seedcoat has a fascinating complex microstructure, with jigsaw puzzle-like epidermis cells articulated via wavy intercellular sutures to form a compact layer to protect the kernel inside. However, little research has been conducted on linking the microstructure details with the overall mechanical response of this interesting biological composite. To this end, an integrated experimental-numerical-analytical investigation was conducted to both characterize the microstructure and ascertain the microscale mechanical properties and to test the overall response of kernels and full seeds under macroscale quasi-static compression. Scanning electron microscopy (SEM) was utilized to examine the microstructure of the outer seedcoat and nanoindentation was performed to obtain the material properties of the seedcoat hard phase material. A multiscale computational strategy was applied to link the microstructure to the macroscale response of the seed. First, the effective anisotropic mechanical properties of the seedcoat were obtained from finite element (FE) simulations of a microscale representative volume element (RVE), which were further verified from sophisticated analytical models. Then, macroscale FE models of the individual kernel and full seed were developed. Good agreement between the compression experiments and FE simulations were obtained for both the kernel and the full seed. The results revealed the anisotropic property and the protective function of the seedcoat, and showed that the sutures of the seedcoat play an important role in transmitting and distributing loads in responding to external compression.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The seedcoat of <I>Panicum miliaceum</I> shows remarkable micro-scale suture networks. </LI> <LI> Sophisticated composite plate model was first developed for the seedcoat. </LI> <LI> First experimental-numerical study on a single <I>Panicum miliaceum</I> seed and kernel. </LI> </UL> </P>
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