Jixie qiangdu (Jan 2023)
OPTIMAL DESIGN OF A RE-DIRECTIVE CRASH CUSHION WITH A SHEARING AND EXTRUSION EXPANSION MIXED ENERGY ABSORPTION TYPE (MT)
Abstract
Combining the topology optimization of crashworthiness results and the shear squeezing energy absorption idea, this paper proposes a re-directive crash cushion with a shear and extrusion expansion mixed energy absorption type, and then based on the robust design method to obtain its optimal structural parameters. Firstly, according to topology optimization of crashworthiness for obtaining the best force transmission path. Secondly, the energy absorption types of shearing and extrusion expansionare mixed and then integrated into the design of the crash cushion to propose a basic configuration of the re-directive crash cushion with a shearing and extrusion expansion mixed energy absorption type. The results indicate that the re-directive crash cushion with a shearing and extrusion expansion mixed energy absorption type can provide better protection for crash vehicles and occupants.
