Limits of applicability of the standard method for estimating the torsional rigidity of spatial frames of buggy vehicle
- Authors: Bazhenov E.E1, Bujnachev S.K2, Kustovskij A.N1
-
Affiliations:
- Ural State Forest Engineering University
- Ural Federal University named after the first President of Russia Boris N. Yeltsin
- Issue: Vol 12, No 4 (2018)
- Pages: 55-60
- Section: Articles
- URL: https://journals.rcsi.science/2074-0530/article/view/66839
- DOI: https://doi.org/10.17816/2074-0530-66839
- ID: 66839
Cite item
Full Text
Abstract
The article provides an assessment of the limits of applicability of the standard methodology for estimating the torsional rigidity of spatial rod-bearing systems of automobiles. Torsional stiffness, as shown by numerous studies and practices, is one of the most important indicators of the carrying capacity of vehicle bodies (frames) of all types of vehicles - including such highly specialized ones as buggy. The authors show on the example of the bearing structure of an off-road vehicle of the “buggy” class that the general application approach to the assessment of the torsional rigidity of the bearing systems using torsion deflection stumbles upon limitations when it comes to spatial frames of complex construction. These restrictions are dictated by the difference in stiffness between design zones (zones should be understood as the floor area, the waist area and the roof area), which is reflected in the significantly different distribution of displacements in them. As a result, it becomes impossible to unequivocally give an opinion on the torsional rigidity of the frame using torsion deflection, since it is impossible to select a reference point in any of the zones (or the entire zone) to adequately describe the torsional rigidity of the whole structure (or a separate substructure). In this regard, the authors proposed the limits of applicability of the traditional method for estimating the torsional stiffness of a spatial core structure, and also proposed a method for overcoming these difficulties encountered when trying to assess the torsional stiffness of the supporting structure. The object of the research is a typical spatial frame of an all-terrain automobile of the D2 class buggy.
Keywords
Full Text
##article.viewOnOriginalSite##About the authors
E. E Bazhenov
Ural State Forest Engineering UniversityDSc in Engineering
S. K Bujnachev
Ural Federal University named after the first President of Russia Boris N. YeltsinPh.D.
A. N Kustovskij
Ural State Forest Engineering University
Email: Kustovsky88@mail.ru
References
- Воронцова Н.И., Круглов А.А., Сарычев Ю.А. Расчет кузова большого городского автобуса на изгиб и кручение. М.: Труды НАМИ, 1986.
- Павловский Я. Автомобильные кузова. М.: Машиностроение, 1977. 544 с.
- Tebby S., Esmailzadeh E., Barari A. Methods to Determine Torsion Stiffness in an Automotive Chassis // Computer - Aided Design & Applications. PACE (1), 2011, 67-75.
- Кудрявцев С.М. Теоретические и экспериментальные исследования кузова современного автомобиля. Нижний Новгород, 2009. 220 с.
- Stiffness relevance and strength relevance in crash of car body components // European Aluminium Association, 2010, 1-58.