The Impact Analysis of Tire Parameter for Tire Wear When Monorail Vehicle Curve Driving

2013 ◽  
Vol 470 ◽  
pp. 529-533 ◽  
Author(s):  
Zi Xue Du ◽  
Xiao Xia Wen ◽  
Zheng Shen
Keyword(s):  
Dynamic Model ◽  
Dynamic Modeling ◽  
Impact Analysis ◽  
Radial Force ◽  
Experimental Results ◽  
Dynamic Coupling ◽  
Lateral Forces ◽  
Tire Wear ◽  
The Impact ◽  
Parameter Influence

monorail spatially coupled dynamic modeling which has three directions attached contacts wheel have been established. According to the simulation and experimental results, dynamic model was validated. based on the dynamic coupling modeling , the tire parameter influence trends for the tire wear of walking wheel’s tires were analyzed when monorail vehicle curve driving. The analysis result revealed that because the contact of straddle-beam monorail is special, with the cornering stiffness increases of walking wheel tire, by the impact of the contact radial force from guide wheels and stabilizing wheels, the lateral forces of walking wheel is gradually increasing. tire wear speed increases at a constant when monorail vehicle curve driving.

scholarly journals Calculating cargo securing elements on a railway platform under the impact of a spatial force system

2019 ◽  
Vol 135 ◽  
pp. 02006 ◽  
Author(s):  
Khabibulla Turanov ◽  
Yadgor Ruzmetov ◽  
Natalia Vlasova
Keyword(s):  
Mathematical Models ◽  
Mechanical System ◽  
Physical Model ◽  
Dynamic Model ◽  
Force System ◽  
Mathematical Solution ◽  
Lateral Forces ◽  
Analytical Formulas ◽  
The Impact ◽  
Simultaneous Influence

Form a design (or dynamic) model on the basis of studying the physical model of a mechanical system (object); build mathematical models of cargo securing with inclined side surfaces of stop elements (bars) with simultaneous influence of longitudinal and lateral forces; perform a mathematical solution of the problem in the form of specific analytical formulas for calculating inclined stop bars as one of the cargo securing elements on the railway platform; make a specific example of the calculation of the forces acting on the cargo securing elements.

Dynamic Modeling and Mobility Analysis of the 3-R(RRR)R+R Antenna Mechanism

Robotica ◽  
2021 ◽  
pp. 1-19
Author(s):  
Guoxing Zhang ◽  
Donghao Zheng ◽  
Jinwei Guo ◽  
Yulei Hou ◽  
Daxing Zeng
Keyword(s):  
Mathematical Model ◽  
Dynamic Model ◽  
Dynamic Simulation ◽  
Dynamic Modeling ◽  
Theoretical Basis ◽  
Research Work ◽  
Experimental Results ◽  
Mobility Analysis ◽  
Motion Characteristics ◽  
Mathematical Model Analysis

SUMMARY A novel 3-R(RRR)R+R (R as revolute joint) hybrid antenna mechanism (HAM) is proposed for noncircular polarized antenna. First, its mobility characteristic is analyzed. Besides, its kinematics is deduced, and the velocity and acceleration are obtained. Afterward, its dynamic model is established. The actuation torques of each actuation joint are obtained. Its actuation torques are verified by mathematical model analysis and dynamic simulation. Furthermore, its workspace is also presented. Finally, the motion characteristics experimental results show that the 3-R(RRR)R+R HAM can carry out the azimuth and pitch motion. This research work serves as a fundamental theoretical basis for its further application.

Preliminary Exploration of the Dynamic Model and Experiment on an Impact between a Tennis Ball and Racket

2014 ◽  
Vol 494-495 ◽  
pp. 297-300
Author(s):  
Hui Hui Hong ◽  
Liang Han
Keyword(s):  
Experimental Data ◽  
Dynamic Model ◽  
Sports Injuries ◽  
Test System ◽  
Experimental Results ◽  
Tennis Ball ◽  
Preliminary Results ◽  
Preliminary Study ◽  
Set Up ◽  
The Impact

The research on an impact between a tennis ball and racket is very significant to improve the level of tennis and reduce the sports injuries. A preliminary study on an impact between a tennis ball and racket is carried out in this paper. It is composed of four parts: the reference of the existed dynamic model, the experimental set-up, the test system, the collection and analysis of experimental data. The preliminary experimental results are compared with the dynamic model, and the impact dynamic model can be improved after considering every effect on the impact. The preliminary results show that the model can be used to predict the tennis impact on the racket with different inbound velocity.

Comprehensive analyses of the elasto-plastic oblique contact-impact with vibration response

2018 ◽  
Vol 233 (2) ◽  
pp. 441-454 ◽  
Author(s):  
Wenjun Meng ◽  
Yao Wang
Keyword(s):  
Dynamic Modeling ◽  
Transverse Vibration ◽  
Flat Surface ◽  
Influence Factor ◽  
Contact Point ◽  
Vibration Response ◽  
Experimental Results ◽  
Vibration Responses ◽  
Contact Impact ◽  
The Impact

Contact-impact between different surfaces is a ubiquitous phenomenon especially in the mechanical systems. Previous work of authors indicated that the effect of longitudinal and/or transverse vibration response during the motion and dynamic modeling cannot be neglected for the elasto-plastic contact-impact events. In this study, further analyses were performed to characterize the contribution of longitudinal and transverse vibration responses during the elasto-plastic oblique contact-impact, and the formula to calculate the influence factor of vibration, ξ, was proposed based on the contact force with different vibrations during the impact. The momentum theorem and assumed mode method were used to develop the equations of motion of a flexible bar with a solid flat surface. Simulation results were compared with experimental results reported in the literature to verify the accuracy of the established model. The tangential and normal velocities of the contact point after the impact were compared with the simulations for different vibration cases, and the comparison between the simulations and the experimental results had yield encourage results. For different elasto-plastic materials, three critical initial impact angles had been found from the simulation to determine whether the flexible bar slides or sticks the flat surface. Although considering the effect of vibration response during the motion and dynamic modeling is very significant, increasing the number of shape functions did not effect the result significantly. The longitudinal and transverse vibration responses were found to effect the normal and tangential velocities of the contact point after the impact, respectively. Moreover, it had been shown that for the oblique contact-impact with sliding, considering the response of longitudinal and transverse vibration at the same time is more reasonable than other cases, which also reveals that, in this case, there is a good agreement between the simulation and experimental results. Besides, the mathematical expression on the influence factor of vibration depending on the initial velocity also had been obtained by a numerical analysis. This work can provide useful insights for dynamic modeling of complex multi-body systems during the contact-impact.

Longitudinal Dynamic Modeling of the Snowmobile Considering Fuel Economy

2011 ◽  
Vol 86 ◽  
pp. 333-336
Author(s):  
Xue Song Du ◽  
Huai Ju Liu ◽  
Cai Chao Zhu ◽  
Hua Feng Ding
Keyword(s):  
Dynamic Model ◽  
Dynamic Modeling ◽  
Fuel Economy ◽  
Design Tool ◽  
Experimental Results ◽  
Longitudinal Dynamic ◽  
Characteristic Map ◽  
Practical Engineering ◽  
Acceptable Deviation ◽  
Effective Design

Regulating line with the optimum fuel economy performance is investigated based on the universal characteristic map of the engine equipped on the snowmobile. The engine is supposed to run in a range near the optimum fuel economy performance regulating line with CVT speed regulating control. The dynamic model of the snowmobile is proposed, and simulation with Simulink is investigated. Though acceptable deviation occurs when compared with experimental results, reliability is validated for the model. With further amendments of the model, such as a further consideration of the slip state of the CVT when launching the snowmobile, the model can be applied to the practical engineering as an effective design tool.

The Impact of a Potential Public/Private Initiative on a Defined Region of the South Suburban Chicago Metropolitan Area

2019 ◽  
pp. 14-32
Keyword(s):  
Supply Chain ◽  
Economic Impact ◽  
Impact Analysis ◽  
Census Data ◽  
Economic Benefits ◽  
Local Economy ◽  
Market Area ◽  
State And Local ◽  
The University ◽  
The Impact

The university is considered one of the engines of growth in a local economy or its market area, since its direct contributions consist of 1) employment of faculty and staff, 2) services to students, and supply chain links vendors, all of which define the University’s Market area. Indirect contributions consist of those agents associated with the university in terms of community and civic events. Each of these activities represent economic benefits to their host communities and can be classified as the economic impact a university has on its local economy and whose spatial market area includes each of the above agents. In addition are the critical links to the University, which can be considered part of its Demand and Supply chain. This paper contributes to the field of Public/Private Impact Analysis, which is used to substantiate the social and economic benefits of cooperating for economic resources. We use Census data on Output of Goods and Services, Labor Income on Salaries, Wages and Benefits, Indirect State and Local Taxes, Property Tax Revenue, Population, and Inter-Industry to measure economic impact (Implan, 2016).

332-OR: Determining the Impact of Additional Macronutrients on the Glycemic-Insulin Dynamic Model

Diabetes ◽  
2019 ◽  
Vol 68 (Supplement 1) ◽  
pp. 332-OR
Author(s):  
BOYI JIANG ◽  
YUXIANG ZHONG ◽  
PRATIK AGRAWAL ◽  
TONI L. CORDERO ◽  
ROBERT VIGERSKY
Keyword(s):  
Dynamic Model ◽  
The Impact

The Impact of Cash Mobs in the Vote with the Wallet Game: Experimental Results

2016 ◽  
Author(s):  
Leonardo Becchetti ◽  
Maurizio Fiaschetti ◽  
Francesco Salustri
Keyword(s):  
Experimental Results ◽  
The Impact

Impact Analysis of the Mechanization Program for Tribal Paddy Farmers of Goa

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
MATHALA JULIET GUPTA ◽  
ASHISH M. PITRE ◽  
SUMATI CHAVAN PANDURNAG ◽  
SALONI SALIL VANJARI
Keyword(s):  
Impact Analysis ◽  
Field Capacity ◽  
Significant Saving ◽  
Manual Methods ◽  
Paddy Farmers ◽  
The Impact ◽  
And Training

This paper assessed the impact of the mechanization of the 8 tribal paddy farmers’ groups of Goa benefited in the year 2011 through the Tribal sub-plan program of ICAR-CCARI through results of surveys conducted in 2012 and 2015. Shift to mechanization among beneficiaries was significant in power tillers (64-100%) but less in power reapers(0-91%). Also significant saving in manpower (Power tillers:33.3% to 60%, power reapers: 33.3% to 83.3%), , time (field capacity increased (power tillers : 41.7% to141%, power reapers :58.1% to 912.8%) and cost(power tillers :44.7% to 59.1%, power reapers : 57.8% to 82.9%) was reportedthrough the use of equipment as compared to desi plough or manual methods of harvesting. Some constraints like lack of access roads and training in use and maintenance of the equipment were reported by the beneficiary farmers.

Dynamic model for high-speed rotors based on their experimental characterization

2017 ◽  
Vol 2 (4) ◽  
pp. 25
Author(s):  
L. A. Montoya ◽  
E. E. Rodríguez ◽  
H. J. Zúñiga ◽  
I. Mejía
Keyword(s):  
Dynamic Model ◽  
High Speed ◽  
Natural Frequencies ◽  
Mode Shapes ◽  
Experimental Characterization ◽  
Rotating Systems ◽  
Computing Performance ◽  
The Impact ◽  
Stiffness Distribution ◽  
Good Agreement

Rotating systems components such as rotors, have dynamic characteristics that are of great importance to understand because they may cause failure of turbomachinery. Therefore, it is required to study a dynamic model to predict some vibration characteristics, in this case, the natural frequencies and mode shapes (both of free vibration) of a centrifugal compressor shaft. The peculiarity of the dynamic model proposed is that using frequency and displacements values obtained experimentally, it is possible to calculate the mass and stiffness distribution of the shaft, and then use these values to estimate the theoretical modal parameters. The natural frequencies and mode shapes of the shaft were obtained with experimental modal analysis by using the impact test. The results predicted by the model are in good agreement with the experimental test. The model is also flexible with other geometries and has a great time and computing performance, which can be evaluated with respect to other commercial software in the future.

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