Maintaining the safety of vehicle’s passengers in driving accidents is one of the most important features of a vehicle. Checking and eva‎luating the performance of a vehicle in keeping passengers safe in driving accidents is done by crash testing. In crash test, by using a dummy model, an attempt is made to practically simulate the conditions of a real accident. The extent of passenger’s injuries and the vehicle damages are measured and compared by the standard values. Based on this, vehicle manufacturers make changes in safety equipment or in other vehicle components in order to promote safety measures of a vehicle in accidents. Considering the advantages of the mini class vehicles, including the reduction of fuel consumption and air pollution, vehicle design in this class which is called the Iranian mini vehicle has been carried out by several university projects and is in the design completion stage. The purpose of this research is to investigate the safety of Iranian mini vehicle in the side crash test by finite element method. The standard used is IIHS side crash test. The simulation software is LS-DYNA, which is one of the most prominent software in the field of crash testing. In this project, modifications have been made to the vehicle body at first, including the modification of the vehicle sill and the middle column, in order to provide the possibility of the overall design of the door. After general designing of the vehicle door, the FEM simulation of other main components is done, in order to provide the complete model for side crash test. In the next stage, the model of the front and rear suspension system, tires and seat belt is done. After that, simulation based on the standard side crash test is performed, and the results which include the parameters related to the deformation of the vehicle structure and the injuries on the dummy is extracted. By analyzing the results, it was found that the deformation values of the vehicle structure and a number of parameters related to the dummy injuries are not in the right range, according to the range determined by the standard. In order to improve the values of these parameters, two general measures were taken, including strengthening the vehicle structure and using airbag. After repetition the test, the results showed improvement of the mentioned parameters.

عليرضا شهيدي ريزي

عليرضا شهيدي ريزي , محمد مشايخي