| Autors: Karapetkov, S. M., Uzunov, H. V., Dechkova, S. V., Uzunov, V. H. Title: Dynamic Modelling of Vehicle Collisions using the Finite Element Method. Cauchy Problem Keywords: traffic accident, two car collision, finite element model, e Abstract: This article discusses a boundary-value problem of impact between two cars, known as the Cauchy problem. The purpose of the task is to determine the two vehicles’ center of mass velocity of motion prior impact, knowing the final rest positions after the accident and the crumple zone. Geometric modelling is performed in SolidWorks, and dynamic finite element analysis is carried out with Abaqus /Explicit. The initial data are the deformations of the vehicles in three-dimensional space and the respective boundary conditions. The movement of cars after the impact is modelled using a multi-mass spatial model. The macro movement is in a three-dimensional Cartesian coordinate system with six degrees of freedom. The deformation energy is determined by the finite element method for an elastoplastic body. The findings of the investigation are the initial conditions of macro movement of bodies after impact. The coincidence of the coordinates of the final rest positions of the cars and their traj References Issue
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