Dynamic Characteristics Fitting of Air Springs and Numerical Analysis of Air Suspensions with Variant Stiffness

2010 ◽  
Vol 46 (04) ◽  
pp. 93 ◽  
Author(s):  
Liao CHEN
Keyword(s):  
Numerical Analysis ◽  
Dynamic Characteristics

scholarly journals Numerical Analysis of the Dynamic Characteristics of a Balanced Piston Type Relief Valve. 2nd Report. Stability of a Relief Valve.

1997 ◽  
Vol 28 (2) ◽  
pp. 239-244
Author(s):  
Satoru HAYASHI ◽  
Yuji IIZUKA ◽  
Ikuro IIMURA ◽  
Toshiyuki HAYASE
Keyword(s):  
Numerical Analysis ◽  
Dynamic Characteristics ◽  
Relief Valve

Shaking Table Test Study of Reinforced Concrete Shear Wall Structure

2017 ◽  
Vol 865 ◽  
pp. 306-312
Author(s):  
Zheng Li ◽  
Heng Zhou ◽  
Li Qin
Keyword(s):  
Numerical Analysis ◽  
Dynamic Characteristics ◽  
Shaking Table Test ◽  
Time History ◽  
Shear Wall ◽  
Shaking Table ◽  
Wall Structure ◽  
Model Structure ◽  
Fixed Base ◽  
Time History Response

A reduced-scale model of 7-story reinforced concrete shear wall structure is made. Shaking-table test of the model is carried out. Two test conditions are considered. In the first condition, fixed base is used. In another condition, soil structure interaction is considered. According to the experimental results, the dynamic characteristic and seismic performance of shear wall structure is studied. The acceleration time history response of model structure is obtained. Based on the time-history response, the dynamic characteristics of model structure are studied by spectrum analysis. The Finite Element Model of actural structure is established by ANSYS. The dynamic characteristics and seismic performance of actural structure are studied. By comparing the experiment results and numerical analysis results under the fixed-base condition, the rationality of the ANSYS model and numerical analysis method of are verified.

Numerical Analysis for Dynamic Characteristics of New Launcher with Coupled Rigid and Flexible Motion

2010 ◽  
Vol 34-35 ◽  
pp. 44-49 ◽  
Author(s):  
Ying Ze Wang
Keyword(s):  
Numerical Simulation ◽  
Numerical Analysis ◽  
Dynamic Characteristics ◽  
High Performance ◽  
Coupling Effect ◽  
The Other ◽  
Flexible Coupling ◽  
Simulation Based ◽  
Coupling Dynamic ◽  
Coupling Dynamic Model

This paper is concerned with an analysis of the dynamic characteristics of the high performance launcher—rarefaction wave gun(RAVEN) by numerical simulation. Based on its launch mechanism and launch structure, a rigid-flexible coupling dynamic model which considered the coupling effect between the flexible virbation of the launch barrel and the motion behaviors of the other parts of the RAVEN is established via a subsystems method. The actual motion of the projectile and inertial breech during the lauching are described by the interior ballistic equations of the RAVEN. The dynamic characterisitcs of RAVEN is illustrated by the numerical simulation about a small caliber launcher, and the interaction between launch barrel and the other parts is also studied.

Numerical Analysis on Dynamic Characteristics of Cryogenic Hydrostatic Journal Bearing

1999 ◽  
Vol 121 (4) ◽  
pp. 879-885 ◽  
Author(s):  
Hiroyuki Yoshikawa ◽  
Terukazu Ota ◽  
Kazuyuki Higashino ◽  
Shunichiro Nakai
Keyword(s):  
Numerical Analysis ◽  
Dynamic Characteristics ◽  
Rotational Speed ◽  
Frequency Ratio ◽  
Journal Bearing ◽  
Liquid Hydrogen ◽  
Transport Systems ◽  
Rocket Engines ◽  
Damping Coefficients ◽  
Stiffness And Damping

Dynamic characteristics of a two row staggered recess cryogenic hydrostatic journal bearing used in the liquid hydrogen turbopump of rocket engines for space transport systems are numerically analyzed. Effects of the rotational speed and the shaft eccentricity are studied in the analysis. Their effects on the stiffness and damping coefficients and the whirl frequency ratio are clarified. Moreover, effects of the orifice parameter, the distance between two recess rows, and the number of recesses on these dynamic characteristics are investigated.

Numerical Study of XCP Probe's Fluid Dynamic Characteristics

2011 ◽  
Vol 130-134 ◽  
pp. 1645-1649
Author(s):  
Ning Liu ◽  
Rui Zhang ◽  
Wen Yi Chen ◽  
Man Man Zhang
Keyword(s):  
Numerical Analysis ◽  
Drag Coefficient ◽  
Dynamic Characteristics ◽  
Numerical Study ◽  
Fluid Dynamic ◽  
Steady Motion ◽  
Experimental Results ◽  
Analysis Method ◽  
Test Parameters ◽  
Volume Method

Applied the finite volume method combining two-equations turbulence model,the influence of fluid dynamic characteristics on XCP probe under different factors be studied The fluid dynamic characteristics were researched under different influencing factors, such as falling speed, rotating rate,seawater density,etc. The drag coefficient under the different falling speeds and the limited velocity of submarine steady motion were obtained. Compared with the experimental results, the simulated results agree well with experimental results, the experiments have show the validity and feasibility of the numerical analysis method. These results will provide theory reference for selecting the reasonable rotating rate, analyzing stability and the movement rule of probe in the water, choosing suitable test parameters for XCP probe of different seawaters.

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