scholarly journals Natural transverse vibration characteristics of jack-up riser and its applied research

2016 ◽  
Author(s):  
Fengde Wang ◽  
Wensheng Xiao ◽  
Hongyan Wang ◽  
Junguo Cui ◽  
Jinsheng Song ◽  
...  
Keyword(s):  
Transverse Vibration ◽  
Applied Research ◽  
Vibration Characteristics ◽  
Jack Up ◽  
Natural Transverse

Sheet Material Property Effects upon Dynamic Behavior in Self-Pierce Riveted Joints

2011 ◽  
Vol 675-677 ◽  
pp. 999-1002 ◽  
Author(s):  
Xiao Cong He
Keyword(s):  
Natural Frequency ◽  
Transverse Vibration ◽  
Spot Welding ◽  
Sheet Material ◽  
Vibration Characteristics ◽  
Efficient Design ◽  
Material Density ◽  
Sheet Materials ◽  
Riveted Joints ◽  
Free Transverse Vibration

Self-pierce riveting (SPR) technology offers an alternative to resistance spot welding (RSW) for joining sheet materials. It has been found that the SPR technology produced a much stronger joint than the RSW in fatigue test. For efficient design of SPR structures, the knowledge of dynamic characteristics of the SPR beams is essential. In this paper, the free transverse vibration characteristics of single lap-jointed cantilevered SPR beams are investigated in detail. The focus of the analysis is to reveal the influence on the natural frequency and natural frequency ratio of these beams caused by variations in the material properties of sheet materials to be jointed. It is shown that the transverse natural frequencies of single lap jointed cantilevered SPR beams increase significantly as the Young’s modulus of the sheet materials increases, but change slightly corresponding to the change in Poisson’s ratio. It is also found that the material density of the sheets have significant effects on the free transverse vibration characteristics of the beams.

Free Vibration of Thin-Walled Open Section Beams With Unconstrained Damping Treatment

1981 ◽  
Vol 48 (1) ◽  
pp. 169-173 ◽  
Author(s):  
S. Narayanan ◽  
J. P. Verma ◽  
A. K. Mallik
Keyword(s):  
Free Vibration ◽  
Cross Section ◽  
Transverse Vibration ◽  
Natural Frequencies ◽  
Vibration Characteristics ◽  
Numerical Results ◽  
Simply Supported ◽  
Clamped Beams ◽  
Thin Walled ◽  
Open Cross Section

Free-vibration characteristics of a thin-walled, open cross-section beam, with unconstrained damping layers at the flanges, are investigated. Both uncoupled transverse vibration and the coupled bending-torsion oscillations, of a beam of a top-hat section, are considered. Numerical results are presented for natural frequencies and modal loss factors of simply supported and clamped-clamped beams.

scholarly journals Vibration Characteristics for Moving Printing Membrane with Variable Density along the Lateral Direction

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Mingyue Shao ◽  
Jimei Wu ◽  
Yan Wang ◽  
Qiumin Wu ◽  
Yuan Chen
Keyword(s):  
Density Distribution ◽  
Transverse Vibration ◽  
High Speed ◽  
Differential Quadrature Method ◽  
Variable Density ◽  
Vibration Characteristics ◽  
Lateral Direction ◽  
Vibration Model ◽  
The Stability ◽  
Density Coefficient

The vibration model of moving membrane with variable density distribution is established, and the density distribution of the moving membrane varies along the lateral direction. The transverse vibration differential equations of moving membrane are established based on D’Alembert’s principle and discretized by using the differential quadrature method (DQM). The relationships of the first three dimensionless complex frequencies between dimensionless speed, density coefficient, and tension ratio of the membrane are analyzed by numerical calculation. The effects of the density coefficient and the tension ratio on transverse vibration characteristics of the membrane are investigated. The relationship between density coefficient and critical speed is obtained. The numerical results show that the density coefficient and the tension ratio have important influence on the stability of moving membrane. So the study provides a theoretical basis for improving the working stability of the membrane in the high-speed printing process.

Research on Vibration Characteristics of Barrel Considered Gas Pressure

2015 ◽  
Vol 727-728 ◽  
pp. 501-504 ◽  
Author(s):  
Da Wei Zhu ◽  
Jie Zhou ◽  
Xue Ping Zhang
Keyword(s):  
Transverse Vibration ◽  
Great Influence ◽  
Forced Response ◽  
Vibration Characteristics ◽  
Gas Pressure ◽  
Charge Weight ◽  
Considerable Influence ◽  
Analysis Method ◽  
Vibration Equation ◽  
Simulation Results

The vibration of barrel has considerable influence on accuracy when firing, for obtaining the disciplinarian of barrel vibration, barrel is considered as a cantilever in this paper, on that base, its transverse vibration equation has been established, and forced response can be figured out by using modal analysis method. The vibration characteristics of barrel were numerically simulated for different charge weight, besides, two situations that the barrel with or without gas pressure have been compared. In solving process, the displacement、velocity and acceleration of projectile are real dates. The simulation results indicate that static offset has a great influence on vibration characteristics, with the increasing of the projectile′s initializing speed, the amplitude of the barrel′s vibration is lower without static offset, and the effect of gas pressure can decrease the amplitude of vibration considerably.

Transverse Vibration Characteristics of an Inclined Cantilevered Rectangular Prism in flow direction

2018 ◽  
Vol 2018 (0) ◽  
pp. S0510103
Author(s):  
Ryohei NAGASE ◽  
Takahiro KIWATA ◽  
Takaaki KONO ◽  
Barata La Ode ◽  
Toshiyuki UENO ◽  
...  
Keyword(s):  
Transverse Vibration ◽  
Flow Direction ◽  
Vibration Characteristics ◽  
Rectangular Prism

Transverse Vibration Characteristics of a Rectangular Prism with Small Side Ratio and Flow Field around the Prism

2017 ◽  
Vol 2017 (0) ◽  
pp. S0520506
Author(s):  
Shunichi MIZUKAMI ◽  
Takahiro KIWATA ◽  
Takaaki KONO ◽  
Barata La Ode ◽  
Toshiyuki UENO
Keyword(s):  
Flow Field ◽  
Transverse Vibration ◽  
Vibration Characteristics ◽  
Rectangular Prism ◽  
Side Ratio ◽  
Small Side

Time period of transverse vibration of skew plate with parabolic temperature variation

2020 ◽  
pp. 107754632092688
Author(s):  
Reeta Bhardwaj ◽  
Naveen Mani ◽  
Amit Sharma
Keyword(s):  
Temperature Variation ◽  
Transverse Vibration ◽  
Two Dimensions ◽  
Thickness Variation ◽  
Time Period ◽  
Skew Plate ◽  
Edge Conditions ◽  
Convergence Study ◽  
Published Result ◽  
Natural Transverse

Time period of natural transverse vibration of a nonhomogeneous skew (parallelogram) plate with variable thickness and temperature field has been investigated on clamped CCCC and combination of clamped and simply supported CSCS edge conditions. The thickness variation on the plate is assumed to be linear in two dimensions, and the temperature variation on the plate is considered to be parabolic in two dimensions. For nonhomogeneity, authors considered circular variation in density. The Rayleigh–Ritz technique is applied to solve the differential equation of motion. A comparative analysis of frequency modes of the present study with the available published result is also given to support the present findings. The convergence study of obtained results is also presented with the help of figures.

Transverse Vibration Characteristics of a Paper Web with Multi-Roller Supports

2009 ◽  
Vol 28 (2) ◽  
pp. 133-144 ◽  
Author(s):  
Jimei Wu ◽  
Zhongmin Wang ◽  
Qiumin Wu ◽  
Yan Wang ◽  
Xuxia Guo
Keyword(s):  
Transverse Vibration ◽  
Vibration Characteristics
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