Dynamic Behaviors of Optimized K12 Anti-Ram Bollards

• Published in: Symmetry (Basel) Vol. 14; no. 8; p. 1703
• Main Authors: Zhang, Yi, Li, Ruiwen, Heng, Kai, Hu, Feng
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01-08-2022
• Subjects: anti-ram bollard; Bollards; Bombings; Bridges; Buildings; Concrete; Construction; Crashworthiness; Deformation; Design techniques; Dynamic response; Energy conservation; Impact analysis; Impact damage; LS-DYNA; numerical simulation; Protective structures; Simulation; Terrorism; Trucks; vehicle collision; Vehicles; Velocity; United States > US; Oklahoma
• ISSN: 2073-8994; 2073-8994
• DOI: 10.3390/sym14081703

Since terrorist attacks pose a great threat, protective structures need to be applied in terms of the safety of buildings and personnel. The installation of anti-ram bollards around buildings and infrastructures could block potential hazards, including the damage caused by car bombs and vehicular impacts on the buildings. In order to provide effective protection for buildings, the dynamic behaviors of anti-ram bollards should be examined, which is under insufficient research. In this paper, by adopting the FE program LS-DYNA, the FE models of corresponding anti-ram bollards are established, and the FEMs are validated by comparison with the experimental results of five existing vehicle crash tests. On this basis, the dynamic response of the optimized K12 anti-ram bollards under vehicular impact is numerically analyzed, and the influences of various parameters on the deformation of anti-ram bollards, as well as the displacement of the vehicle is studied.