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Jia’ao YU; Zhenzhong SHEN; Zhangxin HUANG
Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 6, Pages 762-780 doi: 10.1007/s11709-022-0847-8
Keywords: thick overburden built-in corridor stress deformation causes for damage concrete damaged plasticity
Demonstration project of safe and efficient mining operations in extra-thick coal seam
Jinhui WANG
Frontiers of Engineering Management 2017, Volume 4, Issue 1, Pages 110-110 doi: 10.15302/J-FEM-2016063
Three-dimensional seismic response analysis of a concrete-faced rockfill dam on overburden layers
Dakuo FENG, Ga ZHANG, Jianmin ZHANG,
Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 2, Pages 258-266 doi: 10.1007/s11709-010-0031-4
Keywords: concrete-faced rockfill dam (CFRD) overburden layer dynamic analysis finite element method (FEM)
CHEN Changfu, XIAO Shujun, YANG Yu
Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 3, Pages 329-333 doi: 10.1007/s11709-007-0043-x
Keyhan KARAMI, Majid ABEDI, Mohammad ZAMANI NEJAD, Mohammad Hassan LOTFIAN
Frontiers of Mechanical Engineering 2012, Volume 7, Issue 4, Pages 433-438 doi: 10.1007/s11465-012-0336-1
On the basis of plane elasticity theory (PET), the displacement and stress components in a thick-walled
Keywords: thick-walled spherical vessels heterogeneous materials FGM FEM parabolic varying properties
A Laboratorial Method for Determining Incipient Yield Pressure of Thick Wall Cylinder
Zhang Yuxian’,Liao Zhenfang,Wang Hong ,Pei Jianghong
Strategic Study of CAE 2005, Volume 7, Issue 11, Pages 72-75
Based on the relation between the incipient yield pressure and the limit of yielding in cylinder according to the elastic disabled rule, a laboratorial method of determining the incipient yield pressure is designed and a set of experimental data were gained. The incipient yield pressure of the cylinder is gained by analyzing the experimental data. The laboratorial method has a good reliability as the experimental value has a little error to the theory value.
Keywords: thick wall cylinder disabled incipient yield pressure
Sun Chengfang,Gu Qian,Chen Xizi,Peng Shaomin
Strategic Study of CAE 2003, Volume 5, Issue 6, Pages 79-83
Keywords: steel fiber fiber reinforced concrete pile thick cap bearing capacity affecting factors
Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1427-1
• Sediment desiccation alters morphological characteristics of aquatic sediment.
Keywords: Fibrous-root macrophytes Thick-root macrophytes Nutrients removal Wet sediment Dried-rewetted sediment
Analysis of Plates and Shells and Its Application
Liu Renhuai
Strategic Study of CAE 2000, Volume 2, Issue 11, Pages 60-67
Keywords: thin plates and shells thick plates and shells nonlinear problem linear problem bending stability vibration
Stress observation of shaft lining wall during construction and initial operation
Wen Dehua
Strategic Study of CAE 2012, Volume 14, Issue 2, Pages 80-84
For searching the stress and deformation law of blended shaft-lining during construction and initial operation, sensors were buried in interior and exterior wall of shaft-lining, and automated monitoring system was created. The stress and deformation law was obtained by analyzing the test results. With the law, we can forecast the long-term safety of shaft lining and provide scientific decision evidence for preventive and treating measures of broken wall.
Keywords: shaft lining monitoring thick topsoil strain additional force
Zhang Zhongwen,Wu Jinan
Strategic Study of CAE 2011, Volume 13, Issue 11, Pages 107-112
Top-coal caving difficulty degree and rational mining method were analyzed by theoretical method on the basis of the 4th coal-seam condition of Pingshuo Mining area. For improving top-coal caving degree, the parameters of full-mechanized caving mining face were obtained by numerical simulation and the equipments were selected and assorted. Practice showed that safe and high-efficient mining with high recovery ratio would be realized by lengthening mining face and adding mining height in shallow buried hard coal-seam with hard roof.
Keywords: shallow buried depth hard coal-seam with hard roof top-coal caving difficulty degree full-mechanized caving mining with large mining-height
Three Dimensional Finite Element Analysis of Cracks for Deep Mixing Wall
Gao Wenhua,Wang Xiangqiu,Chen Qiunan,Zhang Zhimin
Strategic Study of CAE 2005, Volume 7, Issue 12, Pages 88-91
Keywords: cracks deep mixing wall thick plate equivalent bending moment three dimensional finite element
Xin Yu Wu,Fengshuo Wan,Hongyuan Feng,Shichao Jin,Chong Guo,Yu Wei,Dunge Liu,Yuqian Yang,Longzhu Cai,Zhi Hao Jiang,Wei Hong
Engineering 2024, Volume 32, Issue 1, Pages 70-82 doi: 10.1016/j.eng.2023.08.013
This paper presents a systematic investigation and demonstration of a K-band circularly polarized liquid-crystal-based phased array (LCPA), including the design, over-the-air (OTA) in-array calibration, and experimental validation. The LCPA contains 16 phase-shifting radiating channels, each consisting of a circularly polarized stacked patch antenna and a liquid-crystal-based phase shifter (LCPS) based on a loaded differential line structure. Thanks to its slow-wave properties, the LCPS exhibits a maximum phase-shifting range of more than 360° with a figure of merit of 78.3°·dB−1 based on a liquid crystal layer with a thickness of only 5 μm. Furthermore, an automatic OTA calibration based on a state ergodic method is proposed, which enables the extraction of the phase–voltage curve of every individual LCPA channel. The proposed LCPA is manufactured and characterized with a total profile of only 1.76 mm, experimentally demonstrating a scanned circularly polarized beam from −40° to +40° with a measured peak gain of 12.5 dBic and a scanning loss of less than 2.5 dB. The bandwidth of the LCPA, which satisfies the requirements of port reflection (|S11|) < −15 dB, an axial ratio (AR) < 3 dB, beam squinting < 3°, and a gain variation < 2.2 dB, spans from 25.5 to 26.0 GHz. The total efficiency is about 34%, which represents a new state of the art. The use of the demonstrated low-profile LCPA to support circularly polarized scanning beams, along with the systematic design and calibration methodology, holds potential promise for a variety of millimeter-wave applications.
Keywords: Circularly polarized Liquid crystal Liquid-crystal-based phased array (LCPA) Phase shifter Over-the-air (OTA) calibration
Title Author Date Type Operation
Analysis on damage causes of built-in corridor in core rock-fill dam on thick overburden: A case study
Jia’ao YU; Zhenzhong SHEN; Zhangxin HUANG
Journal Article
Demonstration project of safe and efficient mining operations in extra-thick coal seam
Jinhui WANG
Journal Article
Three-dimensional seismic response analysis of a concrete-faced rockfill dam on overburden layers
Dakuo FENG, Ga ZHANG, Jianmin ZHANG,
Journal Article
Unified solution of limit loads of thick wall cylinder subject to external pressure considering strain
CHEN Changfu, XIAO Shujun, YANG Yu
Journal Article
Elastic analysis of heterogeneous thick-walled spherical pressure vessels with parabolic varying properties
Keyhan KARAMI, Majid ABEDI, Mohammad ZAMANI NEJAD, Mohammad Hassan LOTFIAN
Journal Article
A Laboratorial Method for Determining Incipient Yield Pressure of Thick Wall Cylinder
Zhang Yuxian’,Liao Zhenfang,Wang Hong ,Pei Jianghong
Journal Article
The Experimental Research on Affecting Factors on Bearing Capacity of Steel Fiber Reinforced Concrete Thick
Sun Chengfang,Gu Qian,Chen Xizi,Peng Shaomin
Journal Article
Effects of previous drying of sediment on root functional traits and rhizoperformance of emerged macrophytes
Journal Article
Stress observation of shaft lining wall during construction and initial operation
Wen Dehua
Journal Article
Full-mechanized caving mining technology of extremely thick and hard coal-seam with hard roof in shallow
Zhang Zhongwen,Wu Jinan
Journal Article
Three Dimensional Finite Element Analysis of Cracks for Deep Mixing Wall
Gao Wenhua,Wang Xiangqiu,Chen Qiunan,Zhang Zhimin
Journal Article