Impact Attenuator Design for Improvement of Racing Car Drivers’ Safety

Abstract

An essential element for driver safety is represented by the Impact Attenuator (especially for race cars). The effect of the Impact Attenuator can be seen in the behavior of a dummy, tied with a seat belt, in a frontal collision with a rigid wall. The loads that act on the dummy are determined and checked to see if they fall within the values recommended by existing standards. The car is considered a structure with a dummy fixed with a seat belt and equipped with an Impact Attenuator. Two types of Impact Attenuator having constructive similarity and symmetries are studied, made up of three different materials and different thicknesses of material. The behavior of the dummy was studied, considering a frontal collision of the car–dummy assembly, in accordance with existing standards. Using simulation software, the accelerations were determined at various points on the mannequin’s body and the force appearing on the seat belts was determined. The Gibbs–Appell equations are the method used to determine the dynamic response in this problem involving shocks.

Responsiveness and Precision of Digital IMUs under Linear and Curvilinear Motion Conditions for Local Navigation and Positioning in Advanced Smart Mobility

“…The new generation of vehicles is currently able to supply advanced assistance to the driver in their driving tasks [ 1 , 2 , 3 ] by playing an active role in safety issues, such as electronic stability control (ESC) [ 4 ], antilock braking (ABS) [ 5 ], and the newer Advanced Driver Assistance Systems (ADAS) [ 6 , 7 , 8 ], as well as by managing in-car navigation and positioning technologies based on Inertial Measurement Units (IMUs), Global Positioning Systems (GPSs), and map matching [ 9 , 10 , 11 ]. Moreover, vehicles are already connected [ 12 , 13 , 14 ], since they can link with smartphones, providing emergency roadside assistance, real-time traffic alerts, and circulation [ 15 , 16 , 17 , 18 ], laying the basis for the effective and functional development of Intelligent Transport Systems (ITSs), or “smart mobility” [ 19 , 20 ].…”

The Effect of Vibrations from Racing Cars on the Human Body in FORMULA STUDENT Races

“…Studies on the behavior of a tubular chassis on impact and how it behaves on vibrations are studied in [16][17][18][19]. Other results regarding the dynamic analysis and design of such a chassis are presented in [20][21][22][23][24][25][26][27][28][29]. A simplified approach to the driver-vehicle assembly, considered a twodimensional system for analyzing the response to vibrations, is given in [30].…”