Results 251 to 260 of about 1,161,307 (289)
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A high-performance magnetic shield with large length-to-diameter ratio
Review of Scientific Instruments, 2012We have demonstrated a 100-fold improvement in the magnetic field uniformity on the axis of a large aspect ratio, cylindrical, mumetal magnetic shield by reducing discontinuities in the material of the shield through the welding and re-annealing of a segmented shield.
Susannah, Dickerson +6 more
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Study on Dynamic Properties of Damping Boring Bar with Large Ratio of Length to Diameter
Materials Science Forum, 2014In the deep hole boring, the vibration of the boring bar is greater. In order to improve the machining processing efficiency and quality of the deep hole boring, this paper designs the deep hole damping boring bar with a single oscillator firstly. It builds a simplified dynamic model of the damping boring bar and calculates its relevant parameters ...
Cheng Yang Xu +4 more
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Polymer Engineering & Science, 2022
AbstractA twin‐screw extruder with an ultra‐large length‐to‐diameter (L/D) ratio of 136 was developed and applied in the gel‐spinning process of ultra‐high molecular weight polyethylene (UHMWPE). UHMWPE gel fibers with concentrations of 6–18 wt% were produced at barrel temperatures of 150–180°C and screw speeds of 10–40 rpm.
Jian Wang +4 more
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AbstractA twin‐screw extruder with an ultra‐large length‐to‐diameter (L/D) ratio of 136 was developed and applied in the gel‐spinning process of ultra‐high molecular weight polyethylene (UHMWPE). UHMWPE gel fibers with concentrations of 6–18 wt% were produced at barrel temperatures of 150–180°C and screw speeds of 10–40 rpm.
Jian Wang +4 more
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Applied Mechanics and Materials, 2013
The dynamic simulation analysis method is adopted to investigate the dynamic damping characteristics of lathe tool with large length to diameter (L/D) ratio. The multi flexible body dynamical simulation model of dynamical damping lathe tool with large length to diameter ratio is built up according to the actual experiment lathe by using the software ...
Bai Qin +6 more
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The dynamic simulation analysis method is adopted to investigate the dynamic damping characteristics of lathe tool with large length to diameter (L/D) ratio. The multi flexible body dynamical simulation model of dynamical damping lathe tool with large length to diameter ratio is built up according to the actual experiment lathe by using the software ...
Bai Qin +6 more
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International Journal of Heat and Mass Transfer, 2022
Abstract This study computationally investigates into the transport phenomena and heat transfer mechanisms associated with subcooled and saturated flow boiling of R-134a in large length to diameter micro-channel heat sinks. A two-dimensional computational model has been developed for analysis of the interfacial behavior of flow boiling that widely ...
Ilhwan Yeo, Seunghyun Lee
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Abstract This study computationally investigates into the transport phenomena and heat transfer mechanisms associated with subcooled and saturated flow boiling of R-134a in large length to diameter micro-channel heat sinks. A two-dimensional computational model has been developed for analysis of the interfacial behavior of flow boiling that widely ...
Ilhwan Yeo, Seunghyun Lee
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Applied Mechanics and Materials, 2011
The multi flexible body dynamical simulation model of dynamical vibration absorption lathe tool with large length to diameter ratio is built up according to the actual experiment lathe tool by using the software ADAMS and ANSYS. The experiment data which are consistent with the simulation result verify the correctness of the multi flexible body ...
Bai Qin +7 more
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The multi flexible body dynamical simulation model of dynamical vibration absorption lathe tool with large length to diameter ratio is built up according to the actual experiment lathe tool by using the software ADAMS and ANSYS. The experiment data which are consistent with the simulation result verify the correctness of the multi flexible body ...
Bai Qin +7 more
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Large Eddy Simulation of Axial and Compound Angle Holes With Varying Hole Length-to-Diameter Ratio
Volume 5A: Heat Transfer, 2017The effect of hole length to diameter ratio on flat plate film cooling effectiveness and flow structures of axial and compound angle hole is investigated by large eddy simulation (LES). Film cooling simulations are performed for three blowing ratios (M) ranging from 0.4 to 1.2, three hole length-to-diameter ratios (L/D) from 0.5 to 5 and two compound ...
Weihong Li +4 more
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Passage of a Turbulent Stream Through Honeycomb of Large Length-to-Diameter Ratio
Journal of Basic Engineering, 1964An analysis is performed, similar to the classical one for screens, of the effect of a honeycomb on a turbulent stream, when the cell length is large enough to permit the flow to become fully developed. The results indicate that a honeycomb should reduce the turbulence level of a stream passing through it more effectively than a screen, due to two ...
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The buckling failure modes of rods with large length-to-diameter ratios impacting rigid plates
1973Experimental and analytical work dealing with the transient deformation and buckling mode shapes of rods with large length-to-diameter ratios has been conducted. Aluminum rods of length-to-diameter ratios ranging from 13 to 72 were fired from a powder gun and impacted against a rigid target plate.
M. B. Valentine, G. D. Whitehouse
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Journal of Central South University, 2015
In order to meet the high temperature environment requirement of deep and superdeep well exploitation, a technology of large length-to-diameter ratio metal stator screw lining meshing with rotor is presented. Based on the elastic-plasticity theory, and under the consideration of the effect of tube size, material mechanical parameters, friction ...
Xiao-hua Zhu, Chang-shuai Shi, Hua Tong
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In order to meet the high temperature environment requirement of deep and superdeep well exploitation, a technology of large length-to-diameter ratio metal stator screw lining meshing with rotor is presented. Based on the elastic-plasticity theory, and under the consideration of the effect of tube size, material mechanical parameters, friction ...
Xiao-hua Zhu, Chang-shuai Shi, Hua Tong
openaire +1 more source