Log in

Relevant bibliographies by topics / Reducevar / Journal articles

To see the other types of publications on this topic, follow the link: Reducevar.

Journal articles on the topic 'Reducevar'

Author: Grafiati

Published: 4 June 2021

Last updated: 8 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Reducevar.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Kalaivani, Mrs S., and Dr (Mrs) D. Karaline Karunagari. "Yoga as a Stress Reducer." International Journal of Trend in Scientific Research and Development Volume-2, Issue-3 (April 30, 2018): 1936–38. http://dx.doi.org/10.31142/ijtsrd11396.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Mathew, Sarath, and Ajayakumari K. Ajayakumari K. "Improved Delta++:Smartphone Application Update Reducer." International Journal of Scientific Research 3, no. 5 (June 1, 2012): 228–30. http://dx.doi.org/10.15373/22778179/may2014/68.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Lin, Dong, Xue Qing Qiu, and Zhi Hao Lin. "Study on Combination Use of Polycarboxylate Based Water Reducer and Lignosulphate Based Water Reducer." Advanced Materials Research 721 (July 2013): 252–57. http://dx.doi.org/10.4028/www.scientific.net/amr.721.252.

Full text

Abstract:

Using the cement paste fluidity experiment, this paper carried out a comprehensive research on the effect of the binary compound water reducer of polycarboxylate based water reducer (PC) and lignosulphate based water reducer (LS). The results show that for the use of single water reducer,the plasticizing ability of PC was much better than that of LS. In PC, the plasticizing ability of polyether type polycarboxylate based water reducer (POLYETHER) was slightly higher than that of polyester type polycarboxylate based water reducer (POLYESTER); in LS, sodium lignosulphate based water reducer (SLS) was slightly higher than calcium lignosulphate based water reducer (CLS). For the use of compound water reducer, the compounding effect of PC with LS was good, and the compounding proportion had a significant influence on the compounding effect, the more the proportion of PC in the compound water reducer, the better the compounding effect. Regarding the compounding effect, POLYESTER was significantly better than POLYETHER, SLS slightly better than CLS; To explore the working mechanism of the compound water reducer, the adsorption amount of each component water reducer in the binary compound water reducer on the cement particles surface was measured respectively. The results of adsorption amount show that for the use of single water reducer,the adsorption amount of CLS is greater than that of POLYETHER under the same conditions. The adsorption amount of CLS in the use of compound water reducer was less than that in the use of single water reducer, while the adsorption amount of POLYETHER in the use of compound water reducer was more than that in the use of single water reducer.

APA, Harvard, Vancouver, ISO, and other styles

4

Yang, Shun Qi, Bo Huang, and Liang Ping Mao. "Design Planetary Gear Reducer of ROV Thruster Using Evidence Theory." Advanced Materials Research 616-618 (December 2012): 1988–92. http://dx.doi.org/10.4028/www.scientific.net/amr.616-618.1988.

Full text

Abstract:

Planetary gear reducer is one commonly gearbox used in ROV thruster. In optimization design of planetary gear reducer of ROV thruster, a lot of uncertainties affect the reliability of gear reducer. In this paper, evidence-based design optimization (EBDO) is proposed to handle the planetary gear reducer design under two types uncertainties and first-order reliability method (FORM) is used to calculate reliability of the planetary gear reducer performance functions. Finally, an engineering example is used to illustrate the proposed model to design planetary gear reducer of ROV thruster.

APA, Harvard, Vancouver, ISO, and other styles

5

Wang, Tie, Jun Shen, and Fu Qiang Zhao. "Modular Design on Basic Parameters of Volume Reducer." Applied Mechanics and Materials 86 (August 2011): 633–36. http://dx.doi.org/10.4028/www.scientific.net/amm.86.633.

Full text

Abstract:

In order to meet high-volume, low-cost reducer and ensuring quality in the production of reducer, a new design method is necessary. This paper applies the design method of ‘modular’ in high-volume reducer production, preferred numbers and mechanical optimization design thought, then based on access database and VB programming software research modular design process of the volume reducer. Higher degree basic modular parameters of volume reducer are obtained.

APA, Harvard, Vancouver, ISO, and other styles

6

Chu, Xuyang, Huihuang Xu, Xiaomin Wu, Jiping Tao, and Guifang Shao. "The method of selective assembly for the RV reducer based on genetic algorithm." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 232, no. 6 (March 22, 2017): 921–29. http://dx.doi.org/10.1177/0954406217700179.

Full text

Abstract:

As a precision gear reducer, the RV reducer has a low-transmission backlash (very high assembly accuracy). Therefore, the selective assembly method is the only assembly method which can guarantee the assembly precision of the RV reducer. However, the RV reducer has a complex structure; it consists of a high number of parts whose machining tolerance cannot be very low. Furthermore, there are numerous parts, the tolerances of which influence the RV reducer transmission backlash. Therefore, it is difficult to achieve high assembly accuracy by using the traditional selective assembly method. In this paper, a method of selective assembly is proposed to make the backlash of the RV reducer meet the requirements through the analysis of the characteristics of the RV reducer structure, the processing and assembly process of the parts, and the influence of manufacturing errors on the backlash. Then, a mathematical model was established for the RV reducer assembly issue. And a matching algorithm based on a genetic algorithm was developed. Finally, the algorithm was applied to the selective assembly of the RV reducer for verifying the feasibility and validity of the proposed matching method.

APA, Harvard, Vancouver, ISO, and other styles

7

Kieffer, Joseph W. "Turbine sound reducer." Journal of the Acoustical Society of America 102, no. 1 (July 1997): 21. http://dx.doi.org/10.1121/1.421044.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Chaudhary, Kamesh. "Cycloidal Speed Reducer." International Journal for Research in Applied Science and Engineering Technology 6, no. 1 (January 31, 2018): 2760–62. http://dx.doi.org/10.22214/ijraset.2018.1377.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Lockwood, Alan R., Sidney C. Kolongowski, and Dilyard Doolin. "Engine noise reducer." Journal of the Acoustical Society of America 91, no. 1 (January 1992): 544. http://dx.doi.org/10.1121/1.402649.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Garcia, O., M. D. Martinez-Avial, J. A. Cobos, J. Uceda, J. Gonzalez, and J. A. Navas. "Harmonic reducer converter." IEEE Transactions on Industrial Electronics 50, no. 2 (April 2003): 322–27. http://dx.doi.org/10.1109/tie.2003.809388.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Kucera, Richard J. "Pipe‐vibration reducer." Journal of the Acoustical Society of America 80, no. 6 (December 1986): 1864. http://dx.doi.org/10.1121/1.394232.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Schmidt, Edward M., and George D. Kahl. "Gaseous blast reducer." Journal of the Acoustical Society of America 77, no. 6 (June 1985): 2206. http://dx.doi.org/10.1121/1.391681.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Jia, Fuchun, Yulong Lei, Xianghuan Liu, Yao Fu, and Jianlong Hu. "Simulation and experimental study on lubrication of high-speed reducer of electric vehicle." Industrial Lubrication and Tribology 73, no. 3 (February 9, 2021): 500–507. http://dx.doi.org/10.1108/ilt-08-2020-0309.

Full text

Abstract:

Purpose The lubrication of the high-speed reducer of an electric vehicle is investigated. The specific contents include visualization of the flow field inside reducer, lubrication evaluation of bearings and efficiency experiment. Design/methodology/approach The flow field inside reducer at five working conditions: straight, uphill, downhill, left lean and right lean is simulated by smoothed particle hydrodynamics (SPH). According to the instantaneous number of particles through bearings, the lubrication states of bearings are evaluated. The test platform is set up to measure the efficiency of the reducer. Findings The flow field inside the reducer is obtained, the lubrication of bearings needs to be improved, the efficiency of the electric vehicle reducer meets the requirement. Originality/value The SPH method is used to simulate lubrication instead of using the traditional grid-based finite volume method. A novel method to evaluate the lubrication of bearings is proposed. The method and conclusions can guide electric vehicle reducer design.

APA, Harvard, Vancouver, ISO, and other styles

14

Qin, Hong Gen, Zhi Hua Fei, Wei Guo, and Qian Tian. "The Effects of Water-Reducer on Early-Age Plastic Shrinkage of Concrete." Applied Mechanics and Materials 174-177 (May 2012): 1113–18. http://dx.doi.org/10.4028/www.scientific.net/amm.174-177.1113.

Full text

Abstract:

Water-reducer is one of the dispensable components in modern concrete, can improve the workability and mechanical performance of concrete, and also has an important influence on the plastic cracking resistance of concrete. In this paper, the flat cracking test was used to evaluate the effect of water reducer on the plastic cracking resistance of concrete, meanwhile, capillary pressure; plastic settlement and evaporation rate were also tested. The results showed that water-reducer could improve the plastic cracking resistance of concrete significantly, and the effectiveness of polycarboxylate water reducer were o better than that of wood calcium and naphthalene water reducer.

APA, Harvard, Vancouver, ISO, and other styles

15

Wu, Jun Fei, Xin Zhou, and Hao Zhang. "The FEA of New Type Roller Movable Teeth Reducer." Applied Mechanics and Materials 152-154 (January 2012): 603–8. http://dx.doi.org/10.4028/www.scientific.net/amm.152-154.603.

Full text

Abstract:

The structure and operating principle of rolling movable teeth reducer are introduced in this paper. The model of roller movable teeth reducer is established by Pro/E software , and the statics and modal analysis is made by ANSYS[1 2] software. The simulation results show that the loaded components of roller movable teeth reducer tallies with the theoretical computation and verify the mechanical characteristics of virtual prototype. Through modal analysis of Roller movable teeth reducer transmission Parts, such as the center wheel, roller movable teeth, the shock wave, and retainer, the vibration characteristics frequency of the roller gear reducer is obtained. This can avoid the working band of large deformation of bending and torsion It provides a basis for the optimization design and engineering analysis of reducer[2].

APA, Harvard, Vancouver, ISO, and other styles

16

Song, Rui Yin, Xian Cheng Wang, and Mei Qin Zhang. "Structural Design and Analysis on Reducer with Traveling Wave Driving Principle." Advanced Materials Research 199-200 (February 2011): 436–41. http://dx.doi.org/10.4028/www.scientific.net/amr.199-200.436.

Full text

Abstract:

A new type of reducer based on traveling wave driver principle was put forward. The initial structure of the reducer was designed and the theoretical model was built up. An initial reducer was manufactured and some performances were tested. The experiment results illustrated that the new type reducer has a feature of large ratio, and the testing results accord with the theoretical model through adjusting some test parameters.

APA, Harvard, Vancouver, ISO, and other styles

17

Hsieh, Long Chang, and Tzu Hsia Chen. "The Design and Efficiency Analysis of Planetary Gear Reducer." Advanced Materials Research 317-319 (August 2011): 2226–29. http://dx.doi.org/10.4028/www.scientific.net/amr.317-319.2226.

Full text

Abstract:

Recently, the power system equipped in elevator contains motor and gear reducer to get large output torque. The purpose of this paper is to propose a desgin methodology for the kinematic design and efficiency analysis of planetary gear reducer for elevator. First, according to the concept of train value equation of the train circuit, the 2 stage planetary gear reducer is synthesized. Then, according to the latent power theorem, the mechanical efficiency of 2 stage planetary gear reducer is analyzed to be 95.43%. One planetary gear reducer is designed to illustrate the design methodology. Based on the proposed methodology, all planetary gear reducers for elevator can be synthesized.

APA, Harvard, Vancouver, ISO, and other styles

18

Wu, Jun Fei, Xiao Chen Zhu, Wei Gao, and Ying Yu. "The Dynamics Analysis of Rolling Movable Teeth Reducer." Advanced Materials Research 221 (March 2011): 429–35. http://dx.doi.org/10.4028/www.scientific.net/amr.221.429.

Full text

Abstract:

The structure and operating principle of rolling movable teeth reducer are introduced in this paper. Through the virtual prototype technology, the modeling of rolling movable teeth reducer is made by Pro/E software,and is had the kinematics simulation and dynamic analysis by ADAMS software. The simulation results show that the speed curves of the input shaft and the output shaft of rolling movable teeth reducer coincide with the theory transmission. It proves correctness of virtual prototype. The mechanical properties of rolling movable teeth reducer is obtained by the time-domain graph of meshing force. It provides the basis for the optimization design and engineering analysis of reducer.

APA, Harvard, Vancouver, ISO, and other styles

19

Li, Ling Fang, Zhe Ming He, and You Xin Luo. "Force Model and Simulation Analysis about Two-Ring Speed Reducer." Advanced Materials Research 503-504 (April 2012): 900–904. http://dx.doi.org/10.4028/www.scientific.net/amr.503-504.900.

Full text

Abstract:

After expounding the characteristic and the weakness of three-ring speed reducer, this paper pointed out the principle of two-ring speed reducer. In two-ring speed reducer, the planetary gear with inner teeth is supported by three shafts, and rotary centers of three eccentric shafts are made to form an equilateral triangle in a plane. At any time, meshing points of two internal gear pairs in two-ring speed reducer are always located at two symmetric points of the output rotation centers, which makes the manufacturing and assembly of two-ring speed reducer are more simple and convenient than three-ring one. Then, the force model of two-ring speed reducer was established, and the simulation analysis was done in Matlab. The result in the simulation coincides with in the finite element method, which testifies the formula deduced in this paper is correct.

APA, Harvard, Vancouver, ISO, and other styles

20

Tong, Qing Bin, Chao Qun Jiao, Tao Ning, and Xiao Dong Zhang. "Harmonic Gear Reducer Transmission Error Analysis and Detection." Advanced Materials Research 711 (June 2013): 375–80. http://dx.doi.org/10.4028/www.scientific.net/amr.711.375.

Full text

Abstract:

Harmonic gear reducer is the key component of the electric servo system, its transmission error analysis and testing play a crucial role in the development, production, testing, assembly of gear reducer. According to the thin shell elastics deformation theory, the harmonic transmission principle is analyzed, and the harmonic transmission error sources. The calculation of transmission error is further discussed; the transmission error formula of harmonic gear reducer considering the case of gear backlash and stiffness is given. A harmonic gear reducer transmission error testing system is designed. This system can achieve the detection for the static and dynamic transmission error of harmonic gear reducer, the accuracy of measuring angular is batter than .

APA, Harvard, Vancouver, ISO, and other styles

21

Wang, Jing, Zhihua Wan, Zhurong Dong, and Zhengguo Li. "Research on Performance Test System of Space Harmonic Reducer in High Vacuum and Low Temperature Environment." Machines 9, no. 1 (December 23, 2020): 1. http://dx.doi.org/10.3390/machines9010001.

Full text

Abstract:

The harmonic reducer, with its advantages of high precision, low noise, light weight, and high speed ratio, has been widely used in aerospace solar wing deployment mechanisms, antenna pointing mechanisms, robot joints, and other precision transmission fields. Accurately predicting the performance of the harmonic reducer under various application conditions is of great significance to the high reliability and long life of the harmonic reducer. In this paper, a set of automatic harmonic reducer performance test systems is designed. By using the CANOpen bus interface to control the servo motor as the drive motor, through accurately controlling the motor speed and rotation angle, collecting the angle, torque, and current in real time, the life cycle test of space harmonic reducer was carried out in high vacuum and low temperature environment on the ground. Then, the collected data were automatically analyzed and calculated. The test data of the transmission accuracy, backlash, and transmission efficiency of the space harmonic reducer were obtained. It is proven by experiments that the performance data of the harmonic reducer in space work can be more accurately obtained by using the test system mentioned in this paper, which is convenient for further research on related lubricating materials.

APA, Harvard, Vancouver, ISO, and other styles

22

Wang, S. "Stress Analysis and Design of Main Reducer Housing Using Finite Element Method." MATEC Web of Conferences 221 (2018): 04008. http://dx.doi.org/10.1051/matecconf/201822104008.

Full text

Abstract:

The main reducer housing takes over the shaft loads from gear engagement and transmits to other components, such as differential, semiaxle and driving wheels, so the main reducer housing with enough strength and stiffness is very important. Some factors preventing it from failure need to be taken into consideration when design it. To design a main reducer housing with better performance, in this paper, FEA (Finite Element Analysis) is used to analysis the main reducer housing and to find out some big stress regions. Then, some modifications are proposed to eliminate those big stress regions and obtain a reliable main reducer housing. During the analysis process, an annulus model is built and the reaction forces between the differential bearing seats and axle housing are calculated to determine whether they contact with each other. Finally, some design methods and improvements of the original design main reducer housing are proposed. And numerical comparison results of the stress distribution of the original and improved main reducer housing validate the effectiveness of the proposed methods and modifications in this paper. Those stress analysis and modifications in this paper are time-saving and money-saving before mass production.

APA, Harvard, Vancouver, ISO, and other styles

23

Liu, Zhi-yu, Fu-jian Zhou, Hong-yan Qu, Zhao Yang, Yu-shi Zou, and Dao-bin Wang. "Impact of the Microstructure of Polymer Drag Reducer on Slick-Water Fracturing." Geofluids 2017 (2017): 1–8. http://dx.doi.org/10.1155/2017/9080325.

Full text

Abstract:

Many studies have focused on the drag reduction performance of slick-water, but the microdrag reduction mechanism remains unclear since the microstructure of the drag reducer and its effect on this mechanism have not been well studied. In this study, the microstructure of the drag reducer in slick-water was effectively characterized by transmission electron microscopy. The viscoelasticity and drag reduction performance of the drag reducer with different microstructures were then investigated. Further, the effects of the microstructure of the drag reducer on the viscoelasticity and drag reduction performance of slick-water were analyzed. The results demonstrated that the viscoelasticity of slick-water is governed by the microstructure of the drag reducer, which exhibits a network structure. In addition, the drag reduction performance is related to the viscoelasticity. At low flow rates, the drag reduction performance is dominantly influenced by viscosity, whereas, at high flow rates, it is governed mainly by elasticity. Furthermore, the drag reducer with a uniformly distributed network structure exhibits the most stable drag reduction performance. This drag reducer was used in a field test and the obtained results were consistent with those of a laboratory experiment.

APA, Harvard, Vancouver, ISO, and other styles

24

Li, Zheng Feng, Chun Kuan Du, and Su Qin Huang. "Research on Remanufacturing of Gear Reducer." Advanced Materials Research 945-949 (June 2014): 3045–49. http://dx.doi.org/10.4028/www.scientific.net/amr.945-949.3045.

Full text

Abstract:

Gear reducer is widely used in various fields of industry, as a kind of sustainable development technology, the remanufacturing of gear reducer is significant and has great potential. This paper introduces the technological process of remanufacturing of gear reducer，the discussion major focus on the key parts, such as gear, shaft, and box. their failure forms are analyzed and corresponding remanufacturing process are presented. The remanufacturing technology extends the life cycle of gear reducer, is conducive to energy conservation and emissions reduction.

APA, Harvard, Vancouver, ISO, and other styles

25

He, Yi Bin, Bing Kuan Yang, Yu Zhang, Shi Wen Liu, and Ding Fang Chen. "Lightweight Study on Gear Reducer Box Structure Based on Finite Element Analysis." Advanced Materials Research 823 (October 2013): 20–23. http://dx.doi.org/10.4028/www.scientific.net/amr.823.20.

Full text

Abstract:

On the basis of the analysis of the problems existing in the current research on gear reducer structure, using Solidworks to reducer box structure finite element analysis, by changing the angle of the rib plate and rib plate thickness, the size of the box thickness and the thickness of the bottom plate, based on a comparative study on the experimental data, the comprehensive analysis of the change of the stress and displacement, enclosure structure stress and deformation with the change of size of box body, and eventually make the reducer box to achieve optimization of the structure, lightweight design for the reducer box to explore effective ways and means, has a certain practical significance. Keywords: Solidworks;Finite Element Analysis;Gear Reducer Box;Lightweight;

APA, Harvard, Vancouver, ISO, and other styles

26

Chen, Ke, Chang Hui Yang, Ze Dong Yu, Qun Pan, and Shuang Zhao. "Influence of New Type Water Reducer Agent YC on Properties of Alkali-Activated Slag Cement Mortar." Advanced Materials Research 374-377 (October 2011): 1357–60. http://dx.doi.org/10.4028/www.scientific.net/amr.374-377.1357.

Full text

Abstract:

Through test on influence of water reducer agent YC on properties of alkali activated slag cement mortar, it is shown that water reducer agent YC has favorable plasticizing effect on alkali activated slag cement. When the alkali component is NaOH, the water reducer agent YC gives a water reduction rate of 22.0% to the alkali activated slag cement mortar and the flow ability loss with time is small. The water reducer agent can be adsorbed on the surface of slag and enhance theξpotential of the alkali activated slag cement system.

APA, Harvard, Vancouver, ISO, and other styles

27

Xu, Xun Jiong, and Zhi Gang Fang. "The Method of the Abnormal Sound Detection for Final Drive Based on DSP Technology." Advanced Materials Research 989-994 (July 2014): 3033–36. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.3033.

Full text

Abstract:

According to the mechanism of the main reducer abnormal sound signal is different from the interfering noise, a detection method based on the digital signal processing technology was proposed. With the qualified main reducer noise signal as the reduction sample, the detected main reducer noise signal is de-noising by means of spectrum analysis, and then be estimated whether the detected main reducer is qualified based on certain threshold values. Finally, the detection method is validated, which provided a new thought on the final drive abnormal sound on-line detection.

APA, Harvard, Vancouver, ISO, and other styles

28

Cao, Li Bo, Zhi Wei Deng, and Tie Gang Xiong. "Improvement to the Gear Reducer for a 45T Mining Car." Advanced Materials Research 201-203 (February 2011): 514–17. http://dx.doi.org/10.4028/www.scientific.net/amr.201-203.514.

Full text

Abstract:

Tooth broken, oil leaking and bearing burnt have influenced the original running of a 45T mining car which adopted one two-class gear reducer. In order to solve these problems, a three-class gear reducer was developed and its strength and stiffness were validated by using experience formulas and FEM. The sample of the three-class gear reducer was manufactured and tested in practical work for more than a half year. The results show that the three-class reducer works well, and the problems occurred in the two-class one can be resolved.

APA, Harvard, Vancouver, ISO, and other styles

29

Wu, Lin, and Ming Wang Dong. "Research on Transmission Principle of Gearless Reducer." Advanced Materials Research 860-863 (December 2013): 1744–47. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.1744.

Full text

Abstract:

Propose cylindrical cam lateral transmission mechanism for the first time, define the agency's three specific types. Design gearless reducer type A, B and C for construction elevator by the application of the agency to reducer industry. Conduct physical prototype processing manufacture based on cylindrical cam lateral transmission theory and virtual prototype design of gearless reducer. By contrast processing and experimental tests to determine that the theory of cylindrical cam lateral transmission mechanism is feasible. Gearless reducer have the advantage of high efficiency and energy saving, low cost, small volume, light weight, saving raw materials resources.

APA, Harvard, Vancouver, ISO, and other styles

30

Yang, Jun Kai, and Yun Jie Xu. "Research on Transmission Efficiency of Cycloid Cam Speed Reducer." Applied Mechanics and Materials 138-139 (November 2011): 310–14. http://dx.doi.org/10.4028/www.scientific.net/amm.138-139.310.

Full text

Abstract:

Cycloid cam speed reducer is a widely used transmission. In practice, there are many kinds influence factors which affect transmission efficiency of cycloid cam speed reducer. In this research, dynamic measurement of the transmission efficiency has carried out by experiment It mainly studies the relationship between speed, load change and transmission efficiency during cycloid cam speed reducer working process. Experiment results show that transmission efficiency of cycloid cam speed reducer could be improved by increasing the load, other methods can also use such as reducing the input rotational speed.

APA, Harvard, Vancouver, ISO, and other styles

31

Guo, Ai Hong, Shuang Feng, Jin Xia Zhang, and Fu Sheng Niu. "Modification of Water Reducer on Desulfurization Gypsum Wall Material." Advanced Materials Research 700 (May 2013): 191–94. http://dx.doi.org/10.4028/www.scientific.net/amr.700.191.

Full text

Abstract:

In order to broaden the utilization of desulfurization gypsum in China and achieve the direct usage of desulfurization gypsum, in this paper, Polycarboxylic acid water-reducer (HC), Naphthalene sulfonate formaldehyde polycondensate (NF) and Sulfonated melamine formaldehyde resin (SM) were selected as water reducer to modify desulfurization gypsum. The experiment results are as follows: SM water reducer has little effect on setting time of desulfurization gypsum, although it is helpful to increase the strength of the gypsum-sample, however, compared with HC and NF, it has no obvious effect. About HC water reducer, it has obvious effect on setting time of desulfurization gypsum, so does it to desulfurization gypsum strength, but, higher water using of normal consistency will do adverse effect on the whole with the increase of the dosage. NF water reducer has the similar effect on setting time and sample's strength on desulfurization gypsum with HC, but the dominant changes have no discipline among different mixing amounts with these two water reducer. Lower water using of normal consistency benefits the retention of the sample's strengths.

APA, Harvard, Vancouver, ISO, and other styles

32

Lu, Jian-Wei, Xiao-Ming Sun, Alexander F. Vakakis, and Lawrence A. Bergman. "Influence of backlash in gear reducer on dynamic of single-link manipulator arm." Robotica 33, no. 08 (April 29, 2014): 1671–85. http://dx.doi.org/10.1017/s0263574714000915.

Full text

Abstract:

SUMMARYThe dynamic modeling of a flexible single-link manipulator arm with consideration of backlash in the planetary gear reducer at the joint is presented, and the influence of backlash on the dynamic response of the system is evaluated. A 2K-H planetary gear reducer with backlash was employed as an example to discuss the dynamic modeling of the sub-model of the planetary gear reducer, and the sub-model of the planetary gear reducer was established based on the lumped mass method. The flexible manipulator was regarded as an Euler--Bernoulli beam, and the dynamic model of the flexible manipulator arm with backlash in the planetary gear reducer was determined from Lagrange's equations. Based on the this model, the influence of the backlash in the planetary gear reducer and excitation frequency on the dynamic response of the system were evaluated through simulation, and the results showed that the dynamic response of the system is sensitive to the backlash and the excitation frequency simultaneously, which provides a theoretical foundation for improvement of dynamic modeling and control of the flexible manipulator arm.

APA, Harvard, Vancouver, ISO, and other styles

33

Ge, Zhihao, Yifei Tong, Meng Zhong, and Xiangdong Li. "Research on Reducer Power Measurement System of Bridge Crane." MATEC Web of Conferences 198 (2018): 01003. http://dx.doi.org/10.1051/matecconf/201819801003.

Full text

Abstract:

In this paper, the reducer is taken as the research object for power measurement. First, the demand of reducer power measurement is analyzed, and the method for measuring power is determined. Then, in view of the power measurement method adopted by the reducer, the overall framework of the measuring system is carried out, and the host system is designed.

APA, Harvard, Vancouver, ISO, and other styles

34

Wang, Yan Fang, Lu Ning Liu, and Bo Yang. "Virtual Prototype Modeling and Dynamical Simulation of Swing Movable Teeth Reducer." Advanced Materials Research 466-467 (February 2012): 1300–1304. http://dx.doi.org/10.4028/www.scientific.net/amr.466-467.1300.

Full text

Abstract:

Swing movable teeth reducer is a new type of small teeth difference planetary gear reducer, which is used to transmit the rotary motion and power between two shafts with same axis. It is important to carry on the systematic design and performance simulation of the reducer and seek the optimization design of the products by the virtual prototyping. Based on the study of the principles and characteristics of the swing movable teeth transmission, this study established the virtual prototype and achieved the dynamical simulation of the reducer by CAD/CAE software. The rotate speed and force analysis proved the feasibility of the model.

APA, Harvard, Vancouver, ISO, and other styles

35

Saffer, J. D., and S. J. Thurston. "A negative regulatory element with properties similar to those of enhancers is contained within an Alu sequence." Molecular and Cellular Biology 9, no. 2 (February 1989): 355–64. http://dx.doi.org/10.1128/mcb.9.2.355.

Full text

Abstract:

A negative regulatory element has been found within a member of the African green monkey Alu family of interspersed repeated sequences. This "reducer" element decreased transcription in both directions from a cellular simian virus 40-like bidirectional promoter independently of both orientation and position. The reducer was not promoter specific since it also decreased expression from the simian virus 40 early and human beta-globin promoters. In addition, the reducer decreased transcription from a polymerase III promoter. The reducer was contained in 38 base pairs of an Alu family member and interacted specifically with a monkey cell nuclear protein.

APA, Harvard, Vancouver, ISO, and other styles

36

Saffer, J. D., and S. J. Thurston. "A negative regulatory element with properties similar to those of enhancers is contained within an Alu sequence." Molecular and Cellular Biology 9, no. 2 (February 1989): 355–64. http://dx.doi.org/10.1128/mcb.9.2.355-364.1989.

Full text

Abstract:

A negative regulatory element has been found within a member of the African green monkey Alu family of interspersed repeated sequences. This "reducer" element decreased transcription in both directions from a cellular simian virus 40-like bidirectional promoter independently of both orientation and position. The reducer was not promoter specific since it also decreased expression from the simian virus 40 early and human beta-globin promoters. In addition, the reducer decreased transcription from a polymerase III promoter. The reducer was contained in 38 base pairs of an Alu family member and interacted specifically with a monkey cell nuclear protein.

APA, Harvard, Vancouver, ISO, and other styles

37

Liu, Yi Xiang, and Yong Mei Wang. "Additional Damping Conditions Analysis and Calculation for Exciting Force and External Load." Key Engineering Materials 579-580 (September 2013): 507–11. http://dx.doi.org/10.4028/www.scientific.net/kem.579-580.507.

Full text

Abstract:

This paper firstly starting mechanism of vibration and noise from gear, gear noise mechanism is explained, and analyze the factors and the impact of noise on the gear reducer. Secondly, the establishment of a complete solid model of gear reducer and reducer model for finite element model, the reduction gear box gear reducer of modal analysis and finite element modal calculation, and points out the dynamic analysis of structure, size and weight factor is proportional to the reciprocal of the modal frequencies of each mode is the with the frequency is low, that is, the greater the weight. Once again, the main measure of load and control of gear noise of gear is analyzed, including the calculation, for exciting force reduction gear reducer gear load computation. The analysis and calculation are the theoretical basis of gear structure design and its performance evaluation.

APA, Harvard, Vancouver, ISO, and other styles

38

Hu, F., L. Q. Chen, B. Qi, and W. W. Chen. "Finit Element Analysis and Optimum Design of Time-Sharing 4WD Vehicle Main Reducer." Applied Mechanics and Materials 246-247 (December 2012): 692–96. http://dx.doi.org/10.4028/www.scientific.net/amm.246-247.692.

Full text

Abstract:

By carrying on the stress and transform analysis of the box of a kind of main reducer which was self— designed and manufactured for vehicles, by ROMAX modeling get accurate bearing load and conducting ANSYS finite element analysis. it is shown that structure design of the main reducer box is very important for the intension capability of the box, and for the transmission functions of the main reducer. The hidden trouble of the main reducer transmission due to the designers was solved, which couldn’t estimate the transform of main reducer box by traditional design method, and provided the necessary basis for further optimizing and ameliorating the whole transfer case system. By using the UG software we constructed a complicated model of the box, and carried on a series of accurate intension and fatigued analyses for the model by using ANSYS software.

APA, Harvard, Vancouver, ISO, and other styles

39

Schwerdtfeger, Andreas, and Rüdiger Baltissen. "Augmenter vs. Reducer: Kortikale und autonome Reaktivität auf Reize unterschiedlicher Intensität." Zeitschrift für Differentielle und Diagnostische Psychologie 20, no. 4 (December 1999): 247–62. http://dx.doi.org/10.1024//0170-1789.20.4.247.

Full text

Abstract:

Zusammenfassung: Ziel dieser Studie war es, Unterschiede zwischen anhand der Reducer-Augmenter Skala als extrem eingestuften Augmentern (N = 19, Petrie Reducer) und Reducern in elektrokortikalen (EEG), peripher-physiologischen (EDA, EKG) und subjektiven Reaktionen (EMI) auf weißes Rauschen (65 bis 105 dB; ISI 15-25s) sowie in einer Reaktionszeitaufgabe zu prüfen. In der P1-N1-Amplitude unterschieden sich die Gruppen nicht. Entgegen der Erwartung reagierten die Reducer (Petrie Augmenter) in den N1-P2-Amplituden, der Hautleitfähigkeit und tendenziell auch der Herzrate stärker als die Augmenter. Reducer gaben an, nervöser und weniger optimistisch zu sein als die Augmenter. Die Geräusche beurteilten sie als lauter. In der Reaktionszeitaufgabe wiesen sie längere Reaktionszeiten auf als die Augmenter. Die Ergebnisse sprechen für eine generell erhöhte Reaktivität der Reducer (Petrie-Augmenter) und stehen damit in Übereinstimmung mit der ursprünglichen Konzeption von Augmenting-Reducing nach Petrie .

APA, Harvard, Vancouver, ISO, and other styles

40

Mohl, Werner, Stefan Mina, Dejan Milansinovic, Hirofumi Kasahara, and Paz Yoav. "Coronary sinus reducer stent." Journal of Thoracic and Cardiovascular Surgery 136, no. 5 (November 2008): 1390. http://dx.doi.org/10.1016/j.jtcvs.2008.01.047.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Lozano, Iñigo, Esmeralda Capin, Dae-Hyun Lee Hwang, Ramon Lopez-Palop, and Eduardo Segovia. "Coronary Sinus Reducer Implantation." JACC: Cardiovascular Interventions 11, no. 16 (August 2018): 1658. http://dx.doi.org/10.1016/j.jcin.2018.05.018.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

D’Emidio, Mattia, Gabriele Di Stefano, and Alfredo Navarra. "Bamboo Garden Trimming Problem: Priority Schedulings." Algorithms 12, no. 4 (April 13, 2019): 74. http://dx.doi.org/10.3390/a12040074.

Full text

Abstract:

The paper deals with the Bamboo Garden Trimming (BGT) problem introduced in [Gąsieniec et al., SOFSEM’17]. The problem is difficult to solved due to its close relationship to Pinwheel scheduling. The garden with n bamboos is an analogue of a system of n machines that have to be attended (e.g., serviced) with different frequencies. During each day, bamboo b i grows an extra height h i , for i = 1 , ⋯ , n and, on the conclusion of the day, at most one bamboo has its entire height cut.The goal is to design a perpetual schedule of cuts to keep the height of the tallest ever bamboo as low as possible. The contribution in this paper is twofold, and is both theoretical and experimental. In particular, the focus is on understanding what has been called priority schedulings, i.e., cutting strategies where priority is given to bamboos whose current height is above a threshold greater than or equal to H = ∑ i = 1 n h i . Value H represents the total daily growth of the system and it is known that one cannot keep bamboos in the garden below this threshold indefinitely. As the first result, it is proved that, for any distribution of integer growth rates h 1 , ⋯ , h n and any priority scheduling, the system stabilises in a fixed cycle of cuts. Then, the focus is on the so-called ReduceMax strategy, a greedy priority scheduling that each day cuts the tallest bamboo, regardless of the growth rates distribution. ReduceMax is known to provide a O ( log n ) -approximation, with respect to the lower bound H. One of the main results achieved is that, if ReduceMax stabilises in a round-robin type cycle, then it guarantees 2-approximation. Furthermore, preliminary results are provided relating the structure of the input instance, in terms of growth rates, and the behavior of ReduceMax when applied to such inputs. Finally, a conjecture that ReduceMax is 2-approximating for the BGT problem is claimed, hence an extended experimental evaluation was conducted to support the conjecture and to compare ReduceMax with other relevant scheduling algorithms. The obtained results show that ReduceMax : (i) provides 2-approximation in all considered inputs; and (ii) always outperforms other considered strategies, even those for which better worst case approximation guarantees have been proven.

APA, Harvard, Vancouver, ISO, and other styles

43

Hu, Yuhao, Gang Li, Weidong Zhu, and Jiankun Cui. "An Elastic Transmission Error Compensation Method for Rotary Vector Speed Reducers Based on Error Sensitivity Analysis." Applied Sciences 10, no. 2 (January 9, 2020): 481. http://dx.doi.org/10.3390/app10020481.

Full text

Abstract:

An elastic transmission error (TE) compensation method for a rotary vector (RV) speed reducer is proposed to improve its transmission accuracy based on error sensitivity analysis. Elastic and geometric TEs of the RV speed reducer can be compensated by tooth surface modification of cycloidal gears. Error coefficients of the TE of the RV speed reducer are derived to determine error factors with positive effects on TEs based on error sensitivity analysis. A total TE, including the elastic TE, is obtained by using Adams. The elastic TE compensation method is developed to calculate modification values of error factors with positive effects on the TE to decrease the elastic TE of the RV speed reducer. TE simulation results show that the elastic TE accounts for 25.28% of the total TE, and calculation results show that the maximum contact force and normal deformation of the modified prototype are obviously improved. The feasibility and accuracy of the proposed elastic TE compensation method for RV speed reducers were verified by TE experiments. TE experiment results showed that the TE of the modified RV speed reducer is 47.22% less than that of the initial RV speed reducer.

APA, Harvard, Vancouver, ISO, and other styles

44

Huang, Chao, Baiyue Huang, Yi Zhang, and Ke Xiao. "Modal analysis and experimental research on a planetary reducer with small tooth number difference." Transactions of the Canadian Society for Mechanical Engineering 44, no. 2 (June 1, 2020): 202–12. http://dx.doi.org/10.1139/tcsme-2018-0180.

Full text

Abstract:

To comprehensively analyze the modal characteristics of the planetary reducer with small tooth number difference, based on shaft–bearing–gear–shell coupling, a finite element modal analysis model was established in ABAQUS. The teeth meshing sites were constrained by binding, bearings were simulated by spring elements, and then the natural frequencies and corresponding vibration modes of the reducer were obtained by applying the Lanczos method. Further, a hammering modal experiment on the reducer was carried out utilizing LMS Test.Lab. The modal data were analyzed using a modal identification method, and the modal frequencies and damping ratios were achieved, also the experimental modal parameters were validated according to the modal assurance criterion. The research results indicate that the lowest-order natural frequency of the reducer is 148.53 Hz, which is much higher than the rotation frequency of the eccentric shaft, double gear, and output gear. Also, the two-stage gear mesh frequencies are away from the natural frequencies, therefore the reducer under normal operating conditions will not cause coupling resonance. This research provides a theoretical basis and experimental reference for the dynamic structure optimization of the planetary reducer.

APA, Harvard, Vancouver, ISO, and other styles

45

Yuvenda, Dori, Bambang Sudarmanta, and Erzeddin Alwi. "ANALISIS KEKUATAN PEGAS PRESSURE REDUCER SEBAGAI PENURUNAN TEKANAN PADA MESIN DUEL FUEL." INVOTEK: Jurnal Inovasi Vokasional dan Teknologi 17, no. 2 (November 10, 2017): 31–38. http://dx.doi.org/10.24036/invotek.v17i2.68.

Full text

Abstract:

Pressure reducer merupakan komponen utama pada conversion kit pada mesin bahan bakar ganda (duel fuel engine) yang berfungsi sebagai penurun tekanan pada bahan bakar compressed Natural gas dari tangki sebesar ± 250 bar menjadi tekanan kerja pada injektor gas sebesar ± 2 bar, sehingga menyebabkan kekurangan pasokan jumlah bahan bakar dari pressure reducer yang berpengaruh tethadap penurunan performa mesin, baik pada saat perubahan putaran mesin secara tiba-tiba maupun perubahan beban mesin. Mengatasi permasalah tersebut maka diperlukan upaya untuk meningkatkan performa pressure reducer agar lebih adaptif terhadap perubahan kondisi mesin. Salah satu upaya yang dilakukan untuk peningkatan performa tersebut adalah menambah kekuatan konstanta pegas pada area chamber stage dua pressure reducer. Penelitian ini menggunakan mesin Diamond tipe DI 800 dengan sistem dual fuel model indirect injection. Metode yang dilakukan adalah menvariasikan kekuatan konstanta pegas (25,55 N/m, 26,55 N/m, dan 27,55 N/m). Hasil terbaik didapatkan pada konstanta pegas 27,55 N/m terjadi peningkatan jumlah laju aliran gas (mass flow rate) pada saluran keluar (outlet gas pressure reducer) sebesar 7,42%. Hal ini menunjukkan terjadi peningkatan performa pressure reducer pada saat penambahan kontanta pegas pada stage dua

APA, Harvard, Vancouver, ISO, and other styles

46

Guo, Lei, Zeyu Wang, Yuan Song, Xianjie Shan, and Dongming Gan. "Structural optimization of a new type of lever-assisted gear reducer based on a genetic algorithm." Mechanical Sciences 12, no. 1 (March 26, 2021): 333–43. http://dx.doi.org/10.5194/ms-12-333-2021.

Full text

Abstract:

Abstract. Gear reducers are critical for speed and torque transmissions between motors and manipulators. With the development of robotic research, many new requirements, such as low speed and heavy load, have been proposed for the design of gear reducers used in the joints. To meet these challenges, here, we present the design of a new gear reducer based on a spherical motion sub-lever drive mechanism. Our lever-based gear reducer can transmit the speed and torque from the input shaft to the output shaft through a fixed-axis gear train transmission, lever transmission, and internal translational gear transmission. Compared with traditional gear reducers, our lever-based reducer has stronger load capacities and is suitable for low-speed and heavy-load scenarios. The design parameters of the lever drive mechanism were optimized via finite element analysis and a genetic algorithm, and the assembly of the lever drive mechanism was further simplified. We found the dimensions of the lever are critical for improving the overall performance of this reducer. In addition, the transmission ability of this reducer was demonstrated by a physical prototype. This reducer will find many applications in robotic joints, cranes, and mine hoists.

APA, Harvard, Vancouver, ISO, and other styles

47

Tao, Fu Chun, J. Liu, G. L. Wang, and Y. Shi. "Research on Optimum Design and Simulation of Gear Reducer in Electric Steering Engine." Key Engineering Materials 392-394 (October 2008): 767–70. http://dx.doi.org/10.4028/www.scientific.net/kem.392-394.767.

Full text

Abstract:

Electric steering engine was generally applied in arm systems such as carrier rocket and missile, its life period is very short, and the space and weight of its reducer were strictly restricted, so it is not fit to adopt the conventional rule of infinite life to design electric steering engine gear reducer. This paper carried out the optimum design for it based on the rule of finite life and space, provided and demonstrated a new design scheme, and realized the interior overall structure design of reducer. We used the UG plane to realize three-dimension module design and virtual assembly of gear reducer, elaborated the implementation method of three-dimension motion simulation by the parameter drive mechanism, and simulated the actual working procedure. Experimental results indicated that this gear reducer satisfied excellently the requirement of big drive ratio under the finite life and space.

APA, Harvard, Vancouver, ISO, and other styles

48

Wu, Jing Bing, Xie Wang, and Lun Shu. "Data Acquisition System Based on VC++." Applied Mechanics and Materials 109 (October 2011): 720–24. http://dx.doi.org/10.4028/www.scientific.net/amm.109.720.

Full text

Abstract:

In this paper, we introduced features of data acquisition card based on PCI bus, and combined with researching on timing data collection system in the reducer test, built data acquisition system aiming at parameters of the reducer, and by using VC+ + to program, we achieved display on timing and real-time acquisition curve of data of torque and speed of the reducer, and have got good results.

APA, Harvard, Vancouver, ISO, and other styles

49

Lin, Ming Hua, and Jung Fa Tsai. "Optimal Design of a Speed Reducer." Applied Mechanics and Materials 376 (August 2013): 327–30. http://dx.doi.org/10.4028/www.scientific.net/amm.376.327.

Full text

Abstract:

The mathematical model for optimal design of a speed reducer is a generalized geometric programming problem that is non-convex and not easy be globally solved. This paper applies a deterministic approach including convexification strategies and piecewise linearization techniques to globally solve speed reducer design problems. A practical speed reducer design problem is solved to demonstrate that this study obtains a better solution than other methods.

APA, Harvard, Vancouver, ISO, and other styles

50

Elli, Elvis Felipe, Braulio Otomar Caron, Sandro Luis Petter Medeiros, Elder Eloy, Gean Charles Monteiro, and Denise Schmidt. "Effects of growth reducer and nitrogen fertilization on morphological variables, SPAD index, interception of radiation and productivity of wheat." Revista Ceres 62, no. 6 (December 2015): 577–82. http://dx.doi.org/10.1590/0034-737x201562060010.

Full text

Abstract:

ABSTRACT The objective of this study was to evaluate the effect of growth reducer and nitrogen fertilization on morphological variables, SPAD index, radiation interception, and grain yield of three cultivars of wheat. The experimental design was a randomized block in factorial scheme 3x5x2, with three cultivars (Mestre, Iguaçú and Itaipú), five nitrogen doses (0, 40, 80, 120, 160 Kg ha-1), and application or no application of a growth reducer, with three replications. The following characteristics were evaluated: plant height, SPAD index, leaf area index (LAI), Global Radiation Interception (GRI) and grain yield. The Tukey test (p < 0.05) was used for the comparison between the means of cultivar and growth reducer factors, and for a regression analysis to evaluate N levels. Increasing the dose of nitrogen promotes an increase in LAI of plants of wheat crops differently among cultivars, which leads to a greater degree of global radiation interception. At doses higher or equal to 120 Kg ha-1 of nitrogen, there are significant differences in grain yield between treatments with and without the application of the growth reducer. The significant interaction between growth reducer and nitrogen dose, showed that applications of growth reducer increase the GRI at doses above and below 80 Kg ha-1 of nitrogen. Nitrogen rates of 138 and 109 Kg ha-1 are responsible for maximum grain yields of wheat, which is 4235 and 3787 Kg ha-1 with and without the use of growth reducer, respectively.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!