Experimental Assessment of a Testbed Braking for Low-Speed Frontal Impact
摘要
The objective of this research is to design a braking platform that complements an experimental testbed for conducting low-speed frontal impact tests, enabling various studies to be carried out, ranging from the behavior of new restraint systems to the study of new dummies designed using 3D printing. This braking platform will eliminate destructive testing, as the brake proposed in this research utilizes a hydraulic actuator with a flow control valve to regulate the speed of contraction, thereby avoiding the need for any deformable elements that would require modification in each test. The methodology used was carried out with the help of a flow chart consisting of eight stages, ranging from a study of the different commercial braking platforms to examine the different braking methods currently in use, speed and acceleration calculations, the design, manufacture, installation, and instrumentation of the braking platform, and the analysis of the results obtained by varying the opening of the valve that regulates energy absorption at the moment of impact. The result of this research was the design of a braking platform to complement a low-speed frontal impact testbed. Tests were carried out incorporating the braking platform into the existing testbed, yielding valuable data through the testbed instrumentation. The data was collected in three different cases: opening the hydraulic system's flow control valve completely, leaving the valve halfway open, and finally closing the valve to verify the vehicle's behavior at the moment of impact.