scholarly journals An Experimental Set Up For Optimal Design Of A Human Powered Hydraulic Bicycle

2020 ◽  
Author(s):  
Alamgir Choudhury ◽  
Pavel Ikonomov ◽  
Jorge Rodriguez
Keyword(s):  
Set Up ◽  
Mathematics ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 398
Author(s):  
Tong Xin ◽  
Guolai Yang ◽  
Fengjie Xu ◽  
Quanzhao Sun ◽  
Alexandi Minak

The system designed to accomplish the engraving process of a rotating band projectile is called the gun engraving system. To obtain higher performance, the optimal design of the size parameters of the gun engraving system was carried out. First, a fluid–solid coupling computational model of the gun engraving system was built and validated by the gun launch experiment. Subsequently, three mathematic variable values, like performance evaluation indexes, were obtained. Second, a sensitivity analysis was performed, and four high-influence size parameters were selected as design variables. Finally, an optimization model based on the affine arithmetic was set up and solved, and then the optimized intervals of performance evaluation indexes were obtained. After the optimal design, the percent decrease of the maximum engraving resistance force ranged from 6.34% to 18.24%; the percent decrease of the maximum propellant gas temperature ranged from 1.91% to 7.45%; the percent increase of minimum pressure wave of the propellant gas ranged from 0.12% to 0.36%.


2020 ◽  
Vol 49 (1) ◽  
pp. 24-32
Author(s):  
Pattaraporn Tusto ◽  
Montip Tiensuwan ◽  
Manisha Pal

The paper investigates the class of two-parameter log-logistic dose-response bioassay models in the binomial set-up. The dose is defined by the potency adjusted mixing proportions of two similar compounds. The aim is to investigate the D- and Ds- optimal mixture designs for estimating the full set of parameters or only the potency for a best guess of the parameter values. An indication has been given for finding the optimal design for the estimation of the mixture at which the probability of success attains a given value.


Author(s):  
Paolo Baldissera ◽  
Cristiana Delprete

Student Team Challenges on specific topics are growing in popularity as efficient ways to stimulate students’ independent work, technical and management learning as well as socialization and internationalization. Many competitions are focused on ground vehicles (SAE Formula, Motostudent, Shell Eco Marathon, Solar Challenge), with different focuses on performance, fuel consumption or other depending on the aim of the event. An interesting approach is proposed in the United States by the ASME HPV Challenge, which is focused on Human Powered Vehicles. This class of vehicles allows not only to set-up a classical competition in terms of design, innovation, presentation, manufacturing and racing, but also to grow the student awareness about speed-energy relation. An HPV gives to the rider a direct feedback on a “human-scale” about energy quantities involved in personal mobility. The main returns by the use of this specific topic for a student challenge are: better understanding of the sustainable mobility problem, awareness about the potential and the limits of human muscular power, development of technical skills about design and engineering of lightweight and efficient vehicles, stimulation of the HPVs market development (the students are both potential future designers/manufacturers and/or customers), promotion of healthy and engaging physical activities. In this context, while Europe is rich of HPVs amateurs and manufacturers and is the usual location of the WHPVA World Championship, there is a lack of an educational framework involving students and teachers. Starting from the end of ZEV-HPV Erasmus Intensive Program 2011–2013, the proposal of creating a specific HPV challenge for the European students was developed by the authors. In particular, it was evaluated that by integrating the Student Challenge in the WHPVA World Championship as a special “Educational” category, many reciprocal advantages could be obtained: logistic and organizational support from the WHPVA and its national representatives, in particular for racing and timing, reciprocal technical and cultural exchange between students, academics and the hundred of amateur rider/designer/builder that were attending the event in the last decade, growth and renewal of the European HPVs community by aggregating young people around the subject and by stimulating the research of innovative solutions. After an in-depth analysis of the arguments reported above, an overview of the rules for the 1st edition of EU HPV Student Challenge will be presented and compared to analogous international competitions from an educational perspective.


2012 ◽  
Vol 164 ◽  
pp. 437-440
Author(s):  
Xue Hai Pan

A new type of tire building drum based on parallel mechanism was presented and the analysis of the structure was carried out.The calculation of dof and the output motion type analysis and positive solution and inverse solution were included. Solid model of the mechanism was set up and the trajectory analysis was conducted using software of UG and MATLAB, which provided theoretical base for optimal design application of the mechanism.


2008 ◽  
Vol 392-394 ◽  
pp. 826-831
Author(s):  
Li Yan ◽  
J. Liu ◽  
Wei Jie Qiao

The balance of brake dish is very important for a car driving. Taking one kind of auto-equilibrium-machine of brake dish as research object, and making use of the Virtual–kind-machine technique and the ADAMS software as analysis tools, as well as with the Solid Works to set up a model, for a whole, the kinematics and dynamics of the product are analyzed in various virtual environment, the research of dynamics simulation of machine system is carried out, and various design projects are analyzed Quickly, the experiment is done, which is quite difficult to be realized by physical kind machine, after all these, an optimal design project of the system is decided. The virtual kind machine technique is applied through whole design process, thus the design of the product development becomes convenient, the development period is shortened, and the product costs are reduced so that optimal-new product can be acquired.


Author(s):  
I-Ming Chen ◽  
Chiao-Ting Li ◽  
Huei Peng

This paper presents systematic analysis and design of power split hybrid configurations using a single planetary gearset and two electric machines for human-powered vehicles. In our design methodology, the cyclist is treated as an integrated part of the powertrain, and the cyclist’s power output is augmented by the battery power, instead of being completely replaced. To obtain the optimal design, all the 12 possible power split hybrid configurations are investigated, and several performance indices, including the cyclist’s oxygen consumption, stamina reduction, and pedaling speed preference, are considered in the optimization problem to evaluate the bicycle design. The dynamic programming technique is used to solve the optimization problem. The optimal design, HyBike-i2, has the pedal connected to the carrier gear and one electric machine to the ring gear on the planetary gearset. The other electric machine and the driven wheel are connected to the sun gear. This design outperforms the normal bicycle (no power assist) and two traditional electric bicycles, and achieves substantial reduction in both the cyclist’s stamina discharge and oxygen consumption when the vehicle operates in the charge-sustaining mode.


2013 ◽  
Vol 401-403 ◽  
pp. 222-225
Author(s):  
Ka Lin Su ◽  
Zu Yi Zheng ◽  
Jun Hua Wan ◽  
Zhong Min Wan ◽  
Chong Qing Huang ◽  
...  

The virtual prototype model of air-conditioner piping system is set up based on ANSYS software, modal analysis and harmonic analysis is carried out on the model before and after modification. Some optimization is carried out based on the simulation and analysis results, comparing the two models before and after modification, simulation and the experimental results agree very well. It shows that the cost could be reduced and mechanical property is also good after optimization.


2014 ◽  
Vol 541-542 ◽  
pp. 519-523 ◽  
Author(s):  
Xi Ting Wang ◽  
Yi Feng Zhao ◽  
Bin Jiao

The parameter modeling for the front double-wishbone independent suspension of a vehicle is set up in the development environment of ADAMS, and then, the kinematics simulation analysis for original design parameters are processed. The contribution of design parameters to the sensitivity of the double-wishbone independent suspension is analyzed and the influence of design parameters on the performance of the suspension such as the wheel alignment parameters is investigated. The optimal design for the suspension is carried on by using the experiment design method, which not only realizes the requirement for good wheel alignment parameters, but also improves the sideways displacement of wheel obviously.


2011 ◽  
Vol 130-134 ◽  
pp. 3229-3232
Author(s):  
Li Ping Zheng ◽  
Hai Yu ◽  
Ju Feng Dou

The process of designing a dry-type air-cored reactor is one repeated way of computing and regulating the correlated parameters, and it is very complex and time-consuming. Therefore, Genetic Algorithm is introduced in this paper, for the purpose of reducing error between total inductive potential of coils and the terminal voltage, we set up the optimization model of an air-cored reactor, and the Improved Genetic Algorithm is adopted to make an optimal design for the air-cored reactor. The results show that designed accuracy can be greatly improved.


Author(s):  
T. G. Naymik

Three techniques were incorporated for drying clay-rich specimens: air-drying, freeze-drying and critical point drying. In air-drying, the specimens were set out for several days to dry or were placed in an oven (80°F) for several hours. The freeze-dried specimens were frozen by immersion in liquid nitrogen or in isopentane at near liquid nitrogen temperature and then were immediately placed in the freeze-dry vacuum chamber. The critical point specimens were molded in agar immediately after sampling. When the agar had set up the dehydration series, water-alcohol-amyl acetate-CO2 was carried out. The objectives were to compare the fabric plasmas (clays and precipitates), fabricskeletons (quartz grains) and the relationship between them for each drying technique. The three drying methods are not only applicable to the study of treated soils, but can be incorporated into all SEM clay soil studies.


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