Relationship of Influence Coefficients Between Static-Couple and Multi-Plane Methods on Two-Plane Balancing

2008 ◽  
Author(s):  
John J. Yu
Keyword(s):  
Experimental Results ◽  
Analytical Relationship ◽  
Vibration Modes ◽  
Static Response ◽  
Individual Probe ◽  
Influence Coefficients ◽  
Relationship Of ◽  
Couple Vibration

This paper demonstrates analytical relationship of influence coefficients between static-couple and multi-plane methods on two-plane balancing as well as its application. For the static-couple approach, cross effects are defined between static weights and couple response as well as between couple weights and static response, thus making it possible to offset both static and couple vibration vectors effectively with appropriate combination of static and couple weights. Relationship of influence coefficients between static/couple and individual probe due to static/couple weights is also given. Static, couple, or individual probe influence coefficients due to static or couple weights can be obtained directly without having to place static or couple trial weights if influence coefficients used in the multi-plane approach are known. From static and couple influence data as well as cross effects, influence data for the multi-plane approach can be obtained directly as well without having to place any trial weights at either plane. The above findings and conversion equations are obtained analytically, and verified by experimental results. Conversion of influence coefficients from multi-plane to static-couple format can determine whether static or couple weights are more effective as well as running vibration modes, while conversion from static-couple to multi-plane format can determine which balance plane is more effective.

Relationship of Influence Coefficients Between Static-Couple and Multiplane Methods on Two-Plane Balancing

2008 ◽  
Vol 131 (1) ◽  
Author(s):  
John J. Yu
Keyword(s):  
Experimental Results ◽  
Analytical Relationship ◽  
Vibration Modes ◽  
Static Response ◽  
Individual Probe ◽  
Influence Coefficients ◽  
Relationship Of ◽  
Couple Vibration

This paper demonstrates analytical relationship of influence coefficients between static-couple and multiplane methods on two-plane balancing as well as its application. For the static-couple approach, cross-effects are defined between static weights and couple response as well as between couple weights and static response, thus making it possible to offset both static and couple vibration vectors effectively with appropriate combination of static and couple weights. Relationship of influence coefficients between static/couple and individual probe due to static/couple weights is also given. Static, couple, or individual probe influence coefficients due to static or couple weights can be obtained directly without having to place static or couple trial weights if influence coefficients used in the multiplane approach are known. From static and couple influence data as well as cross-effects, influence data for the multiplane approach can be obtained directly as well without having to place any trial weights at either plane. The above findings and conversion equations are obtained analytically and verified by experimental results. Conversion of influence coefficients from multiplane to static-couple format can determine whether static or couple weights are more effective as well as running vibration modes, while conversion from static-couple to multiplane format can determine which balance plane is more effective.

Discussion on Micro-Structure and Transport Properties of Carbon Micro-Coil

2011 ◽  
Vol 399-401 ◽  
pp. 573-576
Author(s):  
Fa Yu Wu ◽  
Yi Yong Wang ◽  
Wei Juan Li ◽  
Yan Wen Zhou ◽  
Jun Wei Zhang
Keyword(s):  
Transport Properties ◽  
Electrical Transport ◽  
Experimental Results ◽  
Helical Conformation ◽  
Micro Structure ◽  
Electrical Transport Properties ◽  
Relationship Of

The micro-structure, the thermal and electrical transport properties, and their corresponding relationship of carbon micro-coils were discussed, based on the experimental results. The disordered micro-structure and the helical conformation of carbon micro-coils were responsible for the characteristic of their transport properties.

scholarly journals Photoreduction of Cr(VI) Ions in Aqueous Solutions by UV/ Photocatalytic Processes

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Chih Ming Ma ◽  
Yung Shuen Shen ◽  
Po Hsiang Lin
Keyword(s):  
Aqueous Solutions ◽  
Reaction Rate ◽  
Removal Rate ◽  
Experimental Results ◽  
Order Kinetic ◽  
Solution Ph ◽  
Relationship Of ◽  
The Relationship ◽  
Photocatalytic Processes ◽  
Order Kinetic Equation

This study discussed the photoreduction of Cr(VI) ions in aqueous solutions by UV/TiO2photocatalytic processes under various operational factors. Experimental results showed that the removal rate of Cr(VI) increased with decreasing solution pH values and with increasing dosages of organic compounds, indicating that the recombination rate of electrons and h+can be retarded in the reaction systems by the addition of the scavenger, thus raising the reaction rate of Cr(VI). The relationship of the chemical reaction rate of Cr(VI), TiO2dosage, and changes of Cr(VI) concentration was expressed by the pseudo-first-order kinetic equation. Comparing the experimental results of two different doping metals in modified TiO2photoreduction systems, the removal rate of Cr(VI) by the Ag/TiO2process is larger, possibly because the electron transferring ability of Ag is superior to that of Cu. However, the photoreduction rates of Cr(VI) by modified UV/TiO2processes are worse than those by a nonmodified commercial UV/TiO2process.

scholarly journals Influence of the flexibility of beams and slabs in static response and dynamic properties

2016 ◽  
Vol 9 (6) ◽  
pp. 842-855 ◽  
Author(s):  
J. R. BUENO ◽  
◽  
D. D. LORIGGIO ◽  
Keyword(s):  
Finite Element Method ◽  
Natural Frequencies ◽  
Dynamic Properties ◽  
Vibration Modes ◽  
Linear Regime ◽  
Static Response ◽  
The Finite Element Method ◽  
Standard Code ◽  
The Relationship ◽  
Brazilian Standard

Abstract This article examines numerically the flexibility influence of support beams in static response and dynamic properties of a symmetric plate formed by massive slabs of reinforced concrete in elastic linear regime, using the Finite Element Method. In the static response the variation of bending mo-ments and displacements are evaluated, which depend on the relationship between the flexibility of the slab and the beam. The evaluation of dynamic properties is held in undamped free vibration, through which the vibration modes and the values of the natural frequencies is obtained, which are compared with the limits of the Brazilian standard code for design of concrete structures. Results show that the response may show great variation due to the change in the relationship between bending stiffness of the slabs and the beams.

scholarly journals Predicting the Tensile Behavior of Ti-6.6Al-3.3Mo-1.8Zr-0.29Si Alloy via the Temperature-Dependent Crystal Plasticity Method

Materials ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3138
Author(s):  
Jun Zhang ◽  
Yang Wang ◽  
Peng Wang ◽  
Junhong Chen ◽  
Songlin Zheng
Keyword(s):  
Crystal Plasticity ◽  
Experimental Results ◽  
Uniaxial Tensile ◽  
Published Data ◽  
Initial Yield Stress ◽  
Polycrystal Plasticity ◽  
Different Temperatures ◽  
Polycrystalline Model ◽  
Critical Resolved Shear Stress ◽  
Relationship Of

Uniaxial tensile flow properties of a duplex Ti-6.6Al-3.3Mo-1.8Zr-0.29Si alloy in a temperature range from 213 K to 573 K are investigated through crystal plasticity modelling. Experimental results indicate that the initial yield stress of the alloy decreases as the temperature increases, while its work-hardening behavior displays temperature insensitivity. Considering such properties of the alloy, the dependence of the initial critical resolved shear stress (CRSS) on temperature is taken into account in the polycrystal plasticity modelling. Good coincidence is obtained between modelling and the experimental results. The determined values of CRSS for slip systems are comparable to the published data. The proposed polycrystalline model provides an alternative method for better understanding the microstructure–property relationship of α + β titanium alloys at different temperatures in the future.

Bond investigation of hybrid textile with self-compacting fine-grain concrete

2016 ◽  
Vol 46 (8) ◽  
pp. 1616-1632 ◽  
Author(s):  
Shiping Yin ◽  
Bo Wang ◽  
Fei Wang ◽  
Shilang Xu
Keyword(s):  
Tensile Load ◽  
Experimental Results ◽  
Interfacial Property ◽  
Uniaxial Tensile ◽  
Uniaxial Tensile Test ◽  
Multiple Cracks ◽  
Textile Reinforced Concrete ◽  
Fine Grain ◽  
Resin Impregnation ◽  
Relationship Of

This paper presents an experimental investigation into the influence of bond characteristics between textile and matrix on the mechanical behavior of textile-reinforced concrete (TRC). Two types of tests were performed, i.e. pullout test and uniaxial tensile test. Self-compacting fine-grain concrete was adopted. Two kinds of hybrid textile, consisting of both carbon and E-glass yarns, were specially prepared for this study. The experimental results show that sticking sands on the textile after epoxy resin impregnation can improve the interfacial property between textile and matrix. The specimens with textile of 10 mm × 10 mm mesh have stronger bond strength than those with textile of 25 mm × 25 mm mesh, and can reach the maximum tensile strength of yarns when the initial bond length is between 30 mm and 35 mm. Moreover, sticking sands on the textile can improve the multiple cracks form and the ultimate bearing capacity of TRC under uniaxial tensile load. Specimens with textile of 10 mm × 10 mm mesh have higher first-crack loads than those with textile of 25 mm × 25 mm mesh whether or not the textile surface treatment was conducted, and also have better crack distribution. Finally, based on the experimental results from TRC under uniaxial tensile load, a double linear constitutive equation of stress–strain relationship of carbon fiber yarn is provided in this paper.

scholarly journals Vibrational spectroscopic study of intensities and shifts of symmetric vibration modes of ozone diluted by cumene

2016 ◽  
Vol 4 (1) ◽  
pp. 5 ◽  
Author(s):  
A. Heidari ◽  
C. Brown
Keyword(s):  
Spectroscopic Study ◽  
Vibration Mode ◽  
Experimental Results ◽  
Vibration Modes ◽  
Symmetric Vibration ◽  
Linear Dependency ◽  
Raman Intensities ◽  
And Shifts ◽  
Ir And Raman ◽  
Ft Raman

In the current research, ATR–FTIR and FT–Raman spectroscopies was used to investigate the effect of concentration on IR and Raman intensities and shifts of symmetric vibration modes of Ozone diluted by Cumene. The symmetric vibration mode of Ozone was observed at IR and Raman shifts of 850 and 975 cm-1, respectively. By reducing the concentration of Ozone, its intensity also was reduced and the symmetric vibration mode of Cumene was observed at IR and Raman shifts of 1050 and 1185 cm-1, respectively. The concentration has not influence on IR and Raman shifts of vibration modes. The experimental results were confirmed the linear dependency of IR and Raman intensities to the concentration of sample.Ozone molecule (left illustration) and Cumene molecule (right illustration) (Santiago-López et al. 2010; Guevara-Guzmán et al. 2009; Pereyra-Muñoz et al. 2006; Foucaud et al. 2006; Elsayed 2001; van Hoof et al. 1997; Chrostowski et al. 1983; Boehme et al. 1992; Catalá et al. 2013; Balvers et al. 1992; Marker et al. 1986).

Further Investigations of Movement Time between Brake and Accelerator Pedals in Automobiles

1970 ◽  
Vol 12 (6) ◽  
pp. 559-561 ◽  
Author(s):  
Benjamin T. Davies ◽  
John M. Watts
Keyword(s):  
Horizontal Plane ◽  
Movement Time ◽  
Experimental Results ◽  
Brake Pedal ◽  
Seat Height ◽  
Stopping Distance ◽  
High Speeds ◽  
Relationship Of ◽  
Female Subjects

This report presents the results of continued studies into the nonoptimality of the positional relationship of brake and accelerator pedals in contemporary automobiles. Ten female subjects were tested to determine how long it takes to move the foot from the accelerator to the brake pedal under four conditions involving variations in brake pedal height and seat height. Experimental results indicated: (1) a reduction in stopping distance of upwards of 10 ft. could be effected at high speeds, (2) seat height had no effect on movement time of foot from accelerator to brake pedal in the case of female drivers, and (3) movement times for female drivers when compared with previous experiments on male drivers are the same when the brake pedal is 6 in. higher than the accelerator but are 25% slower when the pedals are in the same horizontal plane.

Experiment Using a Magnetically Controlled Ferrofluid Flow in a Flatplate Laminar Flow System

2014 ◽  
Vol 896 ◽  
pp. 444-447
Author(s):  
Yi Hua Fan ◽  
Liao Yong Lou ◽  
Yu Ming Chen
Keyword(s):  
Magnetic Field ◽  
Laminar Flow ◽  
Magnetic Particles ◽  
Flow System ◽  
Experimental Results ◽  
Carrier Fluid ◽  
Field Coefficient ◽  
Coefficient Of Viscosity ◽  
Relationship Of ◽  
The Magnetic Field

The Phenomenon of a Magnetic Controlled Ferrofluid Flow in the Flat Plate Laminar Flow System is Discussed in this Paper. the Ferrofluid Flow is One Kind of Colloid Mixture, which is Composited by the Magnetic Particles, Carrier Fluid and Surfactant. its Motion is Followed the Fluid Dynamics and can be Controlled by a Magnetic Field. from the Theoretic Analysis and the Experimental Test, the Coefficient of Viscosity of the Ferrofluid Flow will be Affected by the Magnetic Field. Thus, an Experimental Rig is Built to Test the Influences of the Gap of the Plate and the Strength and Direction of the Magnetic Field for Several Ferrofluid Flows with Different Dividing Rates of Volume. Experimental Results Showed that the Coefficient of Viscosity of the Ferrofluid Flow is Almost Not Upgrading in a Wide Gap Condition by the Magnetic Field, but as the Gap is Smaller, the Coefficient of Viscosity will be Promoted Obviously. Furthermore, Enhancing the Magnetic Field, it will be Increase the Coefficient of Viscosity of the Ferrofluid Flow. from the Experimental Results, the Relationship of the Magnetic Field, Coefficient of Viscosity of Ferrofluid Flow and the Carrier Fluid can be Confirmed.

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