Investigation of the experimental car body in static bending and torsion

Abstract

During the study conducted a simplified numerical model of the body structure of an experimental car has been developed, dangerous points of the load-body structure have been determined. The formalizing process of the numerical model was discussed in the paper, data of frame stiffness and data of displacement of typical points obtained by numerical and experimental methods have been compared. After a car body experimental static bending and static torsion testing it was defined that deflection of load-body structure in car base is equal to 1.58 mm. During diagonal torsion testing of load-body structure at the torque of 3789 Nm the load-body structure twists till 0.93 degree. When calculating for static bending, difference between the results provided by different models is about 2 times. In case of static torsion difference between the results obtained with different models is about 1.27 times.