Návrh materiálu rámu vozidla a aplikace progresivní metodiky zkoušení v praktických provozních podmínkách

Abstract

The dissertation describes the problems of material choosing and its testing when applied to frame construction. The aim of the dissertation was to propose a comprehensive methodology for the testing of vehicle frame materials and testing under operating conditions. In the Framework of the current state of the art, the framework concepts of frame design and the resulting material - technological - construction requirements were described. In the dissertation was defined and analyzed the workload on the car frame structure during operation of the vehicle. To verify the results achieved by FEM simulation, an experimental torsional stiffness measurement was performed using a 3D scanner with original methodology and procedures for evaluating torsion of bodywork in selected evaluation planes for different loads. A series of driving tests was carried out on the instrumented vehicle to verify and refine the choosing of the material for the vehicle frame. To test the safety of the frame construction, a frontal impact test was performed, where the deformation of the frame in the crew compartment area was assessed.