Selection of rational load-carrying construction of passenger car body with of perforated supporting elements

2019 ◽  
pp. 23-27
Author(s):  
S. N. Ashurkova ◽  
◽  
D. Ya. Antipin ◽  
Keyword(s):  
Passenger Car ◽  
Car Body ◽  
Load Carrying ◽  
Selection Of

APEKS - a method of making decisions

2021 ◽  
Vol 12 (1) ◽  
pp. 45-50
Author(s):  
Jan Szybka ◽  
Sylwester Pabian
Keyword(s):  
Fuel Consumption ◽  
Evaluation Criteria ◽  
Operating Costs ◽  
Passenger Car ◽  
Utility Values ◽  
Decision Method ◽  
Individual Comparison ◽  
Wide Range ◽  
Aesthetic Values ◽  
Selection Of

The APEKS method was developed in the 1970s. It has a wide range of applications for making a decision. The article describes the APEKS method, which is a multi-criteria method and consists of 10 steps. The application of this method was presented in the example of car selection. The problem of choosing a passenger car was analyzed taking into account 6 evaluation criteria: fuel consumption, power, price, annual operating costs, aesthetic values, and utility values. Following the APEKS method, the analysis was completed with the selection of the best variant, using the forced decision method, consisting of an individual comparison of all criteria with one another. The APEKS variant is used for this, which has all the best features of the variants to choose from. This indicates that APEKS is an idealized and fictional variant.

Linear Analysis of Uniformly Stressed, Orthotropic Cylindrical Shells

1986 ◽  
Vol 53 (2) ◽  
pp. 249-256 ◽  
Author(s):  
J. F. Wilson ◽  
G. Orgill
Keyword(s):  
Internal Pressure ◽  
Load Carrying Capacity ◽  
Uniform Load ◽  
Classical Elasticity ◽  
Proper Selection ◽  
System Parameters ◽  
Load Carrying ◽  
Parametric Studies ◽  
Deformation Patterns ◽  
Selection Of

Within the framework of classical elasticity, the nonbuckled deformations are calculated for orthotropic, right circular, thin-walled cylinders under uniform load conditions. The principle direction of orthotropy follows parallel constant angle helices. Nondimensional system parameters involving four material constants and three loading conditions (internal pressure, longitudinal load, and pure torque) are identified. Through parametric studies deformation patterns are calculated that are unique to orthotropy. Numerical examples illustrate that the proper selection of cylinder orthotropy can lead to designs with optimal deformations or load-carrying capacity. Results may be used for the design of robotic actuators driven by internal pressure.

Paper 35: Selection of Bearings

1967 ◽  
Vol 182 (1) ◽  
pp. 547-556 ◽  
Author(s):  
M. J. Neale
Keyword(s):  
Basic Function ◽  
Variable Speed ◽  
Relative Movement ◽  
Fluid Films ◽  
Load Carrying ◽  
Rolling Elements ◽  
Allowable Load ◽  
Bearing Loads ◽  
The Relationship ◽  
Selection Of

The basic function of a bearing is to allow relative movement to occur between load-carrying surfaces, and there are various types available working on principles such as rubbing contact, rolling elements, fluid films, deflecting members and magnetic repulsion. The relationship between the allowable load and the speed for the various bearing types is compared with the way in which bearing loads change during the operation of variable speed machines. Various applications have also been studied to assess what bearing loads and rotational speeds would be expected in machines of different sizes. The information presented is intended to assist designers with bearing selection.

Evaluation of different physio-biochemicals indices of exercise performance in Zanskar ponies

2018 ◽  
Author(s):  
Prince Vivek ◽  
Vijay K Bharti ◽  
Sahil Kalia ◽  
Arup Giri ◽  
Kapil Nehra ◽  
...  
Keyword(s):  
Exercise Performance ◽  
Physiological Responses ◽  
Maintenance Cost ◽  
Rugged Terrain ◽  
Native Breed ◽  
Normal Ranges ◽  
Significant Difference ◽  
Load Carrying ◽  
Biochemical Indices ◽  
Selection Of

Zanskar pony is a native breed of high altitude region of Ladakh namely Zanskar valley and Nubra valley. These ponies are commonly used for load carrying by locals and defence personnel due to their adaptability in rugged terrain and rocky track. Therefore, high enduring ponies are in great demand for ride and load carrying at low maintenance cost. So far to the best of our knowledge no studies have made attempt to evaluate different physio-biochemical indices of exercise performance in Zanskar pony, so that selection of elite pony could be made based on these indices. Hence, present study was conducted to evaluate the physiological responses, biochemical, cytokines, hormones, and antioxidant related parameters to performance in Zanskar pony at two geographic areas namely Leh (3500 meter msl) and Nubra valley (3291 meter msl) with different altitude. For this study, total of 6 adult mares ponies were selected for sampling at Leh and 8 adult mare ponies were selected at Partapur. Ponies at different altitude did not exhibit significant difference in physiological responses, and biochemical, cytokines, hormones, and antioxidant related parameters, except aspartate aminotransferase (AST). Though the all the parameters were within the normal ranges towards higher side. These findings indicated that there was no effect of altitude within the entire home tracks of Zanskar pony namely Zanskar Valley and Nubra of Ladakh region. Hence, these parameters may be useful if evaluated during load carrying trials and associated with the performance.

Determining the capacity of the Canadian trans-mountain highway system

1976 ◽  
Vol 3 (3) ◽  
pp. 355-371
Author(s):  
John F. Morrall ◽  
Neville Cameron ◽  
Al Werner
Keyword(s):  
Highway Capacity ◽  
Passenger Car ◽  
Highway Capacity Manual ◽  
Recreational Vehicles ◽  
Improper Use ◽  
Adjustment Factors ◽  
Highway Planning ◽  
Design Hourly Volume ◽  
Selection Of

Trans-mountain highway capacity is sensitive to the percentage of recreational vehicles in the traffic stream, the manner in which passenger car equivalents for recreational vehicles are used in capacity computations, terrain classification, and the choice of design hourly volume. The sensitivity of capacity to these factors is demonstrated for the trans-mountain portion of the Trans-Canada highway which is a two-lane highway, characterized in many locations by long steep grades. This particular highway has a high percentage of recreational vehicles during summer months. The Highway Capacity Manual does not make any provision for the effect of such vehicles and previous highway planning studies have used the adjustment factors for trucks and buses to estimate their effect. Neglecting the effect of recreational vehicles and/or improper use of their passenger car equivalents in capacity computations can result in serious errors in the determination of highway capacity especially in mountainous areas. Further research is required in the areas of terrain definition, selection of design hourly volume, and the present concept of level of service.

On Fatigue Testing of Passenger Car Body Construction

1971 ◽  
Author(s):  
Keiji Kobayashi ◽  
Keiji Yamaguchi ◽  
Takayuki Ikejiri
Keyword(s):  
Fatigue Testing ◽  
Passenger Car ◽  
Car Body ◽  
Body Construction

scholarly journals DEFICITS IN THE SELECTION OF JOINING PROCESSES FOR CAR BODY DESIGN

2018 ◽  
Author(s):  
Enno Garrelts ◽  
David Fabis ◽  
Daniel Roth ◽  
Martin Werz ◽  
Hansgeorg Binz ◽  
...  
Keyword(s):  
Car Body ◽  
Body Design ◽  
Selection Of

Nitrogen Inflation for Passenger Car and Light Truck Tires

2011 ◽  
Vol 39 (2) ◽  
pp. 125-160 ◽  
Author(s):  
John Daws
Keyword(s):  
Pressure Loss ◽  
Loss Rate ◽  
Inflation Pressure ◽  
Nitrogen Gas ◽  
Available Nitrogen ◽  
Passenger Car ◽  
Light Truck ◽  
Basic Model ◽  
Truck Tires ◽  
Selection Of

Abstract Nitrogen as an inflation gas for passenger car and light truck tires use is widely available commercially. Consumers are confronted with a bewildering selection of offerings, and suppliers tout the purity of their nitrogen generation systems and effectiveness of using the gas in place of air. This paper develops models for the initial tire nitrogen purity, the inflation pressure loss rate, and the evolution of the nitrogen gas purity in the tire as a function of the gas used to top off the tire over its life. A series of simulations using the basic model is developed for air and various purities of nitrogen initial inflation with monthly top-off using air or various purities of nitrogen. The initial inflation pressure loss rate is shown as a function of the tire’s initial nitrogen purity. This paper proposes the use of the total oxygen passing through the tire over its lifetime as a metric for evaluation of various inflation schemes. This metric is developed for several of the popular available nitrogen inflation purities using both air and nitrogen as a top-off gas.

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