Strength of a Load-Carrying Steel Frame of a Mobile Wheeled Vehicle Cabin

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STRENGTH OF A LOAD-CARRYING STEEL FRAME OF A MOBILE WHEELED VEHICLE CABIN D. A. Zagarin,1 T. D. Dzotsenidze,2 M. A. Kozlovskaya,3 A. S. Shkel’,4 D. A. Rodchenkov,5 A. M. Bugaev,6 and G. M. Pugin7

UDC 629.33

Achieving the required price indicators when creating new mobile wheeled vehicles becomes possible due to the use of metallurgical products. The objective of this study is to develop technical solutions for a cabin of a mobile wheeled vehicle by using special steel profiles, tubes, sheet material, stampings, and subunits assembled together to form a load-carrying steel frame; and to study the strength of such cabin frame. A welded construction of a load-carrying steel frame of the mobile wheeled vehicle cabin is proposed, consisting of quadrangular tubes and additional rolled steel sheet elements profiled in several directions. An analytical computer model has been developed to study the design of the load-carrying cabin frame by using finite element analysis. To evaluate the strength properties, calculations in accordance with the regulatory requirements of GOST R ISO 5700–2008 and GOST R ISO 3471–2009 were performed. The results of these calculations have shown that the developed load-carrying steel frame of the cabin provides the necessary flail space for the vehicle operator in accordance with the requirements of the regulatory documents. Keywords: wheeled vehicle, load-carrying cabin frame, profiled tubes, rolled steel, strength, material intensity.

Crisis developments in the global economy, as well as difficulties experienced by the markets of complete vehicles designed for various applications change the requirements to how the creation of such vehicles should be approached and what tasks have to be solved under the new conditions. A wheeled agricultural tractor was considered as a mobile wheeled vehicle. In the new vehicle market, sales conditions dictate price indicators, meaning that the cost of new vehicles should correlate with the cost of the used vehicles in the secondary market, as well as comparable technical characteristics. Such type of problem cannot be solved by just using the principles of modular design or unification. 1

Federal State Unitary Enterprise “Central Scientific Research Automobile and Automotive Engines Institute” (NAMI), Moscow, Russia; e-mail: [email protected]. 2 Federal State Budgetary Educational Institution of Higher Education “Russian State Agrarian University — Moscow Timiryazev Agricultural Academy,” Moscow, Russia; e-mail: [email protected]. 3 Federal State Unitary Enterprise “Central Scientific Research Automobile and Automotive Engines Institute” (NAMI), Moscow, Russia; e-mail: [email protected]. 4 Federal State Budgetary Educational Institution of Higher Education “Russian Technological University (MIREA),” Moscow, Russia; e-mail: [email protected]. 5 Federal State Unitary Enterprise “Central Scientific Research Automobile and Automotive Engines Institute” (NAMI), Moscow, Russia; e-mail: [email protected]. 6 Federal State Budgetary Educational Institution