Results 41 to 50 of about 3,366,577 (173)

Calculation of rigid body rotation and shearing dislocation deformation of adjacent shield tunnels due to excavation of foundation pits

open access: yesYantu gongcheng xuebao, 2019
Excavation of foundation pits has a significant impact on the deformation of the adjacent shield tunnels. Considering the additional stress at the tunnel axis due to the soil unloading during excavation, a tunnel deformation model combining the shear ...
WEI Gang 1, HONG Wen-qiang 2, WEI Xin-jiang 1, ZHANG Xin-hai 2, LUO Jing-wei 1
doaj   +1 more source

Impact of starting of tunnel boring machine during construction of connecting channel on existing shield tunnels

open access: yesYantu gongcheng xuebao
The impact of starting of tunnel boring machine (TBM) on the deformation of the existing shield tunnels under loads during the construction process of connecting passage by the shield tunneling method is currently unclear.
HUANG Dawei 1, 2, 3 , CHEN Houhong 1, 2, 3, XU Changjie 1, 2, 3, LUO Wenjun 1, 2, 3, GENG Daxin 1, 2, 3, LIU Jiaxuan 1, 2, 3
doaj   +1 more source

Evaluation of Pushing and Pulling Force for Substitute Astronaut (SA) at Comfortable Position

open access: yes, 2011
The push and pull force of Substitute Astronauts (SA) were assessed by analyses with Operation Force Measuring System (OFMS) in laboratory. Experiment comprised 3D dimensional (3D) measurements of hand force during operating in two different modes of ...
Yan Zhao, Dong Xu Li
core   +1 more source

Applicability of Strain Gauge Methods for Experimental Determination of Operating Stress of Construction, Road and Agricultural Machines Attached to Tractors

open access: yesStructural Mechanics of Engineering Constructions and Buildings
The operating stress of construction, road and agricultural machines is determined during experimental and factory tests using force sensors. The aim of the research is to improve the methods of experimental determination of horizontal forces transferred
Aleksey F. Rogachev   +2 more
doaj   +1 more source

Northeast Regional Meeting of the Kansas Food Safety Task Force, Olathe, Kansas, August 28, 2017.

open access: yes, 2017
PowerPoint presentation given at the 2015 Northeast Regional Meeting."The Kansas Food Safety Task Force was developed for food and feed safety and defense professionals to achieve prevention, intervention and response including the early detection ...
Kansas Food Safety Task Force.
core   +1 more source

Investigation of aerodynamics and longitudinal stability of unmanned aerial vehicle with elevator deflection

open access: yesVietnam Journal of Mechanics, 2019
The elevator is usually hinged to the horizontal tail, which acts as a balance and controls the altitude, establishes a steady motion for the aircraft at all lift coefficients. During elevator rotating, the aircraft needs to be stable to establish a new
Hoang Thi Bich Ngoc, Bui Vinh Binh
doaj   +1 more source

Design Method of Longitudinal Bracing Force Based on Monte Carlo Simulation

open access: yes, 2011
The bracing force of top horizontal braces supporting a row of columns under the only vertical load has been investigated in this paper. A large number of one-story longitudinal column-bracing systems were modeled and analyzed by second-order analysis ...
Hong Liang Zuo   +3 more
core   +1 more source

Hydrothermal, mechanical responses and cryostructure of soft clay under horizontal freezing

open access: yesYantu gongcheng xuebao
Using the self-developed one-dimensional visual horizontal freezing device, one-way horizontal freezing tests are conducted on soft clay under various temperature gradients.
ZHANG Hu 1, 2, HU Jintao 1, ZHENG Bo 3, YANG Suiqiao 1, DONG Yuxuan 1, LU Ming 1, LIANG Yu 1, XING Lijun
doaj   +1 more source

Seismic Response of Tunnel Lining for Shallow-Bias Tunnel with a Small Clear Distance under Wenchuan Earthquake

open access: yesAdvances in Civil Engineering, 2018
In order to study the internal force characteristics of shallow-bias tunnel with a small clear distance in earthquake, a large-scale shaking table slope model test was designed, and the geometric scale was 1 : 10.
Yang Hui, Jiang Xueliang, Lian Pengyuan
doaj   +1 more source

Aerodynamic performance of control surfaces on Mars airplane balloon experiment two

open access: yesJournal of Fluid Science and Technology, 2019
We redesigned the Mars Airplane Balloon Experiment Two (MABE-2) based on MABE-1 to improve the vehicle’s stability and controllability. Following the redesign, the MABE-2 vehicle had a larger horizontal tail volume than that of MABE-1 for improved ...
Masahiro KANAZAKI   +4 more
doaj   +1 more source

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