Mathematical Modeling of Crash-Induced Dynamic Loads on Race Car Drivers

Author(s):  
Paul Begeman ◽  
John Melvin
Sports ◽  
2018 ◽  
Vol 6 (4) ◽  
pp. 118
Author(s):  
Edem Appiah-Dwomoh ◽  
Anja Carlsohn ◽  
Frank Mayer

Long-distance race car drivers are classified as athletes. The sport is physically and mentally demanding, requiring long hours of practice. Therefore, optimal dietary intake is essential for health and performance of the athlete. The aim of the study was to evaluate dietary intake and to compare the data with dietary recommendations for athletes and for the general adult population according to the German Nutrition Society (DGE). A 24-h dietary recall during a competition preparation phase was obtained from 16 male race car drivers (28.3 ± 6.1 years, body mass index (BMI) of 22.9 ± 2.3 kg/m2). The mean intake of energy, nutrients, water and alcohol was recorded. The mean energy, vitamin B2, vitamin E, folate, fiber, calcium, water and alcohol intake were 2124 ± 814 kcal/day, 1.3 ± 0.5 mg/day, 12.5 ± 9.5 mg/day, 231.0 ± 90.9 ug/day, 21.4 ± 9.4 g/day, 1104 ± 764 mg/day, 3309 ± 1522 mL/day and 0.8 ± 2.5 mL/day respectively. Our study indicated that many of the nutrients studied, including energy and carbohydrate, were below the recommended dietary intake for both athletes and the DGE.


2016 ◽  
Vol 55 (2) ◽  
pp. 191-207 ◽  
Author(s):  
John C. Kegelman ◽  
Lene K. Harbott ◽  
J. Christian Gerdes

1994 ◽  
Author(s):  
James W. Lighthall ◽  
John Pierce ◽  
Stephen E. Olvey

2018 ◽  
Vol 7 (4.3) ◽  
pp. 140 ◽  
Author(s):  
Alyona Lovska ◽  
. .

The article presents the findings of the research into loading on the carrying structure of an articulated flat car under combined transportation. The refined data of dynamic loads on the carrying structure of a flat car under train ferry transportation, as well as the main loading modes in rail track operation were determined by mathematical modeling. The adequacy of the models developed was checked with an F-test. The results of the calculation conducted made it possible to conclude that the hypothesis on adequacy of the models is not rejected. The peculiarities of the structural strength modeling for a flat car within operational loading diagrams are given. The graphics works were conducted in Solid Works. The capacity analysis was conducted by the finite element method in CosmosWorks. The 09G2S steel was used as a construction material. It is determined that the maximum equivalent loads in the flat car support structure do not exceed the admissible loads. Results of the research can be used in designing coupled flat cars to provide their capacity at mixed transportation. 


2019 ◽  
Vol 51 (12) ◽  
pp. 2570-2577 ◽  
Author(s):  
DAVID P. FERGUSON ◽  
SAMUEL C. BARTHEL ◽  
MONTANA L. PRUETT ◽  
TODD M. BUCKINGHAM ◽  
PEYTON R. WAASO

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 1915
Author(s):  
Oleksij Fomin ◽  
Mykola Gorbunov ◽  
Alyona Lovska ◽  
Juraj Gerlici ◽  
Kateryna Kravchenko

The study deals with an application of aluminum foam as an energy-absorbing material for the carrying structure of a rail car. The material is particularly recommended for circular tube carrying structures. The authors conducted mathematical modeling of dynamic loads on the carrying structure of an open wagon that faces shunting impacts with consideration of the center sill filled with aluminum foam. It was established that the maximum accelerations on the carrying structure of an open wagon were 35.7 m/s2, which was 3.5% lower in comparison with those for a circular tube structure without a filler. The results obtained were proved by computer modeling. The strength of the carrying structure of an open wagon was also calculated. It was established that aluminum foam applied as a filler for the center sill decreased the maximum equivalent stresses in the carrying structure of an open wagon by about 5% and displacements by 12% in comparison with those involving the circular tube carrying structure of an open wagon without a filler. The natural frequencies and the oscillation modes of the carrying structure of an open wagon were defined. The designed models of the dynamic loading of the carrying structure of an open wagon were verified with an F-test.


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