International Journal of Advanced Studies (Mar 2020)

ANALYSIS OF RESIDUAL DEFORMATIONS IN CAR BODY ELEMENTS BY DIRECT INTEGRATION METHOD

  • Remzi Rustemovich Ablaev,
  • Alim Rustemovich Ablaev,
  • Larisa Sergeevna Abramova,
  • Viktoriya Anatolievna Ksenofontova

DOI
https://doi.org/10.12731/2227-930X-2020-1-35-49
Journal volume & issue
Vol. 10, no. 1
pp. 35 – 49

Abstract

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Currently, there are many different methods to determine the speed of a vehicle at the time of collision. Under the conditions of limited initial data for experts, such as wheel tracks on the roadway at the scene of an accident, the best method is to determine the speed of a car at the time of collision, based on the amount of kinetic energy spent for the deformation of elements and parts of cars. In this regard, the article is devoted to the problem of analysis of residual deformations in the elements of the car body when determining the speed of its movement at the moment of collision. The analysis of various types of residual deformations and methods of their estimation is carried out. The method of direct integration for the analysis of residual deformations in the elements of the car body is proposed, since it most accurately reflects the entire mechanics of the deformation process for the car body at the low level of labor intensity. This factor is one of the most important when choosing a method for investigating the circumstances of a road accident. The proposed method shows the smallest error of calculations when determining the speed of cars at the moment of collision. The research purpose is to develop and justify a model for accounting for the cost of kinetic energy for the deformation of structural ele­ments of the car body when determining its speed at the moment of collision based on the analysis of residual deformations in the elements of the car body by direct integration. Methodology the article uses a systematic approach, methods of analysis and mathematical modeling. Results: the proposed method allows at the stage of investigation of traffic accidents to determine the speed of the vehicle at the time of collision in their deformations, which more fully accounts for all costs kinetic energy for the deformation mechanism of complex body elements having ribs, corrugations, and other elements, which increase the bending stiffness. Practical implications: the obtained results should be used in expert practice to study the circumstances and mechanism of a traffic accident when determining the speed of cars at the time of a collision.

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