Dynamic Characteristic Analysis of Mega-Sub Controlled Structure with Friction Pendulum Bearings

2014 ◽  
Vol 926-930 ◽  
pp. 550-556
Author(s):  
Chang Xia ◽  
Da Bao Fu ◽  
Bin Huang ◽  
Li Ying Liu
Keyword(s):  
Friction Coefficient ◽  
Dynamic Characteristic ◽  
Performance Comparison ◽  
Control Effect ◽  
Characteristic Analysis ◽  
Structural Dynamic ◽  
Coefficient Increase ◽  
Controlled Structure ◽  
Friction Pendulum ◽  
Better Than

A novelty configuration of tall building structure, so-called mega-sub controlled structure (MSCS) with friction pendulum bearings (FPBs), which is featured by the FPBs at the bottom of sub-structures, is studied. The seismic responses of the MSCS with FPBs are carried out. The effects of the radius of the sliding surface and friction coefficient on structural dynamic characteristic indices, i.e. energy, acceleration, story displacement, story shear force, are analyzed. A performance comparison is made with the conventional MSCS. The results show that the MSCS with FPBs exhibits a better vibration-control effect than conventional MSCS. The controlling effectiveness of structure with radius of 500mm and 1500mm is better than that with radius of 1000mm and 2000mm. As the friction coefficient increase, the dynamic behaviors of structure tend to increase.

Dynamic Characteristic Analysis of Lian-Huo Highway Bridges

2014 ◽  
Vol 912-914 ◽  
pp. 1245-1248
Author(s):  
Shi Yan Ma ◽  
Wei Yun Yu ◽  
Ke Lun Wei
Keyword(s):  
Finite Element ◽  
Dynamic Characteristic ◽  
Vibration Frequency ◽  
Dynamic Stiffness ◽  
Highway Bridges ◽  
Natural Vibration Frequency ◽  
Bridge Structure ◽  
Characteristic Analysis ◽  
Element Analysis ◽  
Structural Dynamic

Dynamiccharacteristic analysis of bridge structure is the foundation of the seismicresponse analysis and seismic design, includes the calculation and analysis ofnatural vibration frequency and main vibration mode.The natural vibrationfrequency not only is the index of bridge structure rigidity,but also is the basisof identifying whether the bridge structure resonance occur. In this paper thehealth condition evaluation of highway bridges was carried out based on anambient test and finite element analysis, using finite element analysissoftware ANSYS calculates and analyzes the dynamic characteristic of bridgestructure, then gets the natural vibration frequency and main vibration mode ofbridge structure, finally compares with results of ambient tests. The resultsshowe that, structural dynamic stiffness of Rencungou Viaduct and YingyugouViaduct can meet design requirements; but structural dynamic stiffness ofLiaoyugou Viaduct is lower

Static and Dynamic Characteristic Analysis of the Tower for Vertical Axis Wind Turbine Based on Finite Element Method

2012 ◽  
Vol 229-231 ◽  
pp. 613-616
Author(s):  
Yan Jue Gong ◽  
Yuan Yuan Zhang ◽  
Fu Zhao ◽  
Hui Yu Xiang ◽  
Chun Ling Meng ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Wind Turbine ◽  
Dynamic Characteristic ◽  
Optimization Design ◽  
Vertical Axis ◽  
Vertical Axis Wind Turbine ◽  
Characteristic Analysis ◽  
Support Structure ◽  
Element Method

As an important part of the vertical axis wind turbine, the support structure should have high strength and stiffness. This article adopts finite element method to model a kind of tower structure of the vertical axis wind turbine and carry out static and modal analysis. The static and dynamic characteristic results of tower in this paper provide reference for optimization design the support structure of wind turbine further.

Dynamic Characteristic Analysis of New Pneumatic Bending Joint

2012 ◽  
Vol 271-272 ◽  
pp. 1742-1749
Author(s):  
Peng Cheng Huang ◽  
Qing Hua Yang ◽  
Guan Jun Bao ◽  
Li Bin Zhang
Keyword(s):  
Response Time ◽  
Dynamic Characteristic ◽  
Simulation Analysis ◽  
Characteristic Analysis ◽  
Pneumatic Actuators ◽  
Bending Performance ◽  
First Law Of Thermodynamics ◽  
Existing Problems ◽  
Joint Damping ◽  
New Type

Aimed at existing problems on the bending performance of pneumatic bending joint, a new type of pneumatic bending joint is proposed in this paper. Double flexible pneumatic actuators are used as actuating drivers. Based on the first law of thermodynamics and the joint dynamic equation, the angle dynamic model is established and analyzed. Moreover simplified model is proposed. Meanwhile, its dynamic characteristic is analyzed through simulation analysis. The simulation suggests the following results: in the gas-filled phase, the joint’s pressure response time is about 10ms; while it is about 60ms in the gas-escape phase; and the angle response time of joint is 10 to 20ms. When the joint damping coefficient is increasing, this value will also increase.

scholarly journals Dynamic characteristic analysis of micro-hole gun drill based on ANSYS

2021 ◽  
Vol 1750 ◽  
pp. 012043
Author(s):  
Zhang zhibing ◽  
Dong zhen ◽  
Zhang xiao ◽  
Zhang dong
Keyword(s):  
Dynamic Characteristic ◽  
Characteristic Analysis ◽  
Gun Drill ◽  
Micro Hole

Relationships between Textures and Surface Roughness, Frictional Behavior, Erosion and Corrosion Properties of TiN Films

2004 ◽  
Vol 449-452 ◽  
pp. 781-784 ◽  
Author(s):  
Hee Dong Kim ◽  
In Soo Kim ◽  
Dong Young Sung ◽  
Min Gu Lee ◽  
S. Dost ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Corrosion Resistance ◽  
Friction Coefficient ◽  
Physical Vapor Deposition ◽  
Textured Surface ◽  
Corrosion Properties ◽  
Tin Films ◽  
Physical Vapor Deposition Method ◽  
Erosion Corrosion ◽  
Better Than

TiN coated films were prepared by a reactive ion physical vapor deposition method. In this research, we studied the relationships between textures and friction coefficient, erosion-corrosion resistance and corrosion resistance in textured TiN films. The surface roughness of (115) textured TiN films is lower than that of (111) textured TiN films. The friction coefficient of (115) textured surface is similar with that of (111) textured surface of TiN coated films. The erosion-corrosion and corrosion resistance of (115) textured surface is better than that of (111) textured surface of TiN coated films.

The Dependence of the Friction Coefficient on the Size and Course of Sliding Speed

2014 ◽  
Vol 693 ◽  
pp. 305-310 ◽  
Author(s):  
Eva Labašová
Keyword(s):  
Friction Coefficient ◽  
Normal Load ◽  
Testing Machine ◽  
Current Component ◽  
Sliding Speed ◽  
Rectangular Shape ◽  
Coefficient Increase ◽  
The Coefficient Of Friction ◽  
Ring Method ◽  
Run Up

The coefficient of friction for the bronze material (CuZn25Al6) with insert graphite beds and other bronze material (CuSn12) are investigated in this paper. Friction coefficient was investigated experimentally by the testing machine Tribotestor`89 which uses the principle of the ring on ring method. The external fixed bushing was exposed to the normal load of the same size in all tests. Process of load was increased from level 50 N to 600 N during run up 300 s, after the run up the appropriate level of load was held. The internal bushing performed a rotational movement with constant sliding speed. The value of sliding speed was changed individually for every sample (v = 0.2 (0.3, 0.4) m.s-1). The forth test had a rectangular shape of sliding speed with direct current component 0.3 m.s-1 and the amplitude 0.1 m.s-1 period 300 s, the whole test took 2100 s. The obtained results reveal that friction coefficient increase with the increase of sliding speed.

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