Strength Calculation and Analysis of Equalizer Beam Embodiments for the Operated Equalizing Beam Suspension of the Universal Rotor-screw Rescue Vehicle for the Arctic

Abstract

The Arctic region certainly has an extremely heavy environment for motion of amphibious vehicles. In addition to climatic factors, there are other factors such as snow and ice cover with a difficult relief, ice obstacles of different dimensions, the combination of water and solid surface, etc. All these factors require the Arctic all-terrain vehicle to be able to overcome various obstacles, which can have the size comparable with the vehicle.The universal Arctic rotary-screw rescue vehicle (URV) was chosen as an object of the research. At the moment this rescue vehicle is being developed at the NNSTU named after R.E. Alekseev. A distinctive feature of the URV is the original design of an operated equalizing beam suspension, which has not previously been used for this kind of vehicles. The analysis of equalizer beam various designs is presented in the article. Calculation schemes and simulation models are developed in accordance with the specificity of the rotary-screw vehicle motion. The models and strength calculations have been carried out with standard tools of Autodesk Inventor 2015. The article presents the stress-strain states of different equalizing beam embodiments. The conclusion about reasonability of application of the particular equalizer beam embodiment for developing of a rotor-screw rescue vehicle is based on the performed comparative analysis of researched constructions.