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pro vyhledávání: '"Wang Chunhua"'
Autor:
WANG Chunhua
Publikováno v:
Zhiye weisheng yu yingji jiuyuan (2024)
Externí odkaz:
https://doaj.org/article/cad4400e8e10421ba7414a13320265a1
Autor:
Wang Chunhua
Publikováno v:
Nonlinear Engineering, Vol 12, Iss 1, Pp 1141-75 (2023)
In this work, an exhaustive study on post effect processing of three-dimensional (3D) image is carried to solve the problem of nonlinear digital watermarking algorithm. First, through the feature space decomposition method of the host image, the embe
Externí odkaz:
https://doaj.org/article/b9836ef37f0f4ae1b3d88de435ac962d
Publikováno v:
Lithosphere, Vol 2022, Iss Special 12 (2022)
AbstractFractures continuously extend and expand along bedding shale formations under the action of drilling fluid and eventually form a complex fracture network, which greatly reduces the strength of the rock. To determine the effect of the drilling
Externí odkaz:
https://doaj.org/article/b55929987b664f25b84229ec0b433c8c
Publikováno v:
Jixie qiangdu, Vol 43, Pp 1062-1069 (2021)
For the impact of underground pressure,the roadway support equipment has poor anti-shock capability and is vulnerable to impact failure. A variable gradient thin-walled cylinder energy-absorbing and anti-shock component for anti-shock bracket is prop
Externí odkaz:
https://doaj.org/article/ee2b47a8d1834ec6bb851d945a9d82a2
Autor:
WANG ChunHua, WANG Chen
Publikováno v:
Jixie qiangdu, Vol 42, Pp 325-330 (2020)
The wear resistance of shearer conical pick body affects the service life of pick directly.Based on the analysis and comparison of the existing conical picks wear technology,the wear mechanism of the non-smooth surface with concave in the bionics was
Externí odkaz:
https://doaj.org/article/47413bfc889a4e1d971798c917a106b0
Autor:
WANG ChunHua, GUO ZhiWei
Publikováno v:
Jixie qiangdu, Vol 41, Pp 356-362 (2019)
To meet the requirements of shorter synchronization time and higher life for the synchronizer in transmission, mathematical models aiming at synchronization time and synchronizer life were established separately based on Newton’s second law and adh
Externí odkaz:
https://doaj.org/article/5b39de573c4d4782891fd23333466bbd
Publikováno v:
Jixie qiangdu, Vol 41, Pp 689-695 (2019)
The foamed aluminum filled crash-box with induction grooves on the side wall was made finite element analysis in the impact process by LS-DYNA,and the parameters influence of induction grooves on the energy absorption characteristics of crash-box was
Externí odkaz:
https://doaj.org/article/b7d831df9c1a4247bcb44b3e0b7acdb0
Publikováno v:
Jixie qiangdu, Vol 41, Pp 653-658 (2019)
In order to realize the protection of broken conveyer belt with different moving direction, the scheme of broken belt protector with bidirectional and arc shaped catching scheme was proposed, and the main parameters were designed taking the GX1000 ty
Externí odkaz:
https://doaj.org/article/3964127a06474ab885855f69db78070e
Publikováno v:
Jixie qiangdu, Vol 40, Pp 1364-1370 (2018)
To improve the problem that the conventional design results of planetary gear transmission could not guarantee all of objectives were the optimal, aiming at the shortcomings that adaptive particle swarm optimization algorithm easily produced infeasib
Externí odkaz:
https://doaj.org/article/08a9bec523494d04a6b7b9df41633ec1
Publikováno v:
Jixie qiangdu, Vol 39, Pp 53-56 (2017)
The coal is the basic raw material for energy in China. It has strategic role in national economy,while the problems of roller surface adhesion,belt jitter,falling coal along return trip caused by coal freezing adhesion seriously restrict coal transp
Externí odkaz:
https://doaj.org/article/87ded7eb838547e5b98baa4f29a110e5