Results 71 to 80 of about 1,056,664 (313)
Chengshi guidao jiaotong yanjiu［Objective］Earth chamber pressure is a key parameter for EPB (earth pressure balance) shield construction assessment. Accurate prediction of earth chamber pressure helps construction technicians take timely control measures to ensure subway tunnel ...
WANG Bozhi +8 more
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Numerical Simulation and Experiment Study on Extrusion of AZ31 Magnesium Alloy Tube
Cailiao gongcheng, 2017 The extrusion process of typical AZ31 magnesium alloy tube was simulated by using the constitutive model of AZ31 alloys and ALE-based HyperXtrude software.
SUN Ying-di, CHEN Qiu-rong
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Method of determining thermal conductivity in multi-layer insulation systems [PDF]
, 1972 Repeatable nondestructive method prepares multilayer cryo-insulation material for thermal conductivity measurements. Data acquired are volume of boil-off gas, barometric pressure, gas temperature, chamber pressure, and differential pressure between ...
Scrogham, K. G.
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Advanced Engineering Materials, EarlyView.High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé +5 more
wiley +1 more source
Deep learning-based prediction method for chamber pressure field in shield machines
Yantu gongcheng xuebaoThe chamber pressure is a key factor in the core issues of the stress state of equipment and the stability of tunnel face during shield tunneling. It exhibits significant spatial variability, and its formation and evolution originate from the complex ...
ZHANG Chao 1, 2, 3, ZHU Minxiang 1, LANG Zhixiong 1, CHEN Renpeng 1, 2, 3, , , CHENG Hongzhan 1, 2, 3
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Dynamic characteristics of the recessed chamber within a gas–liquid coaxial injector
Advances in Mechanical Engineering, 2016 In this article, a linear dynamic characteristic model of the recessed chamber in a gas–liquid shear coaxial injector is developed. The gaseous injector flow before the recessed chamber is considered to be steady, and we just investigate the response of ...
Qing-fei Fu, Li-jun Yang
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Pressure limiting propellant actuating system [PDF]
, 1980 A pressure limiting propellant activating system for simultaneously limiting the output force while maintaining a constant output pressure from the combustion chamber is described.
Murphy, D. W., Reese, P. B.
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Advanced Engineering Materials, EarlyView.It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti +11 more
wiley +1 more source
Research on the Pressure Impact Characteristic of Continuous Rotary Electro-Hydraulic Servo Motor
IEEE Access, 2019 In order to reduce the pressure impact of continuous rotary electro-hydraulic servo motor, ensure the smooth pressure transition during the motor commutation, and improve the control accuracy, a kind of pre-compression chamber structure was proposed. The
Xiaojing Wang +3 more
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Space shuttle orbit maneuvering engine reusable thrust chamber program [PDF]
Tests were conducted on the regenerative cooled thrust chamber of the space shuttle orbit maneuvering engine. The conditions for the tests and the durations obtained are presented.
Pauckert, R. P. +2 more
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