Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Local impact resistance of curved sandwich panel with Miura-ori foldcore
https://orcid.org/0000-0002-6492-7396
Abstract Curved sandwich structures have demonstrated great potential for engineering applications. However, little study on the impact resistance of the curved Miura-ori sandwich structure is found. In this study, the curved sandwich panel with a curved Miura-ori foldcore (CPCM) is proposed and its impact resistance is numerically investigated. The force displacement history, energy absorption, specific energy absorption, residual velocity of the projectile and the displacement of the rear face sheet are used to evaluate the performances of the CPCM. Various loading scenarios including different impact velocities and positions, different projectile sizes and geometries are considered. Moreover, the curved sandwich panel with a curved honeycomb core (CPCH) that have similar specifications and the same relative density as the CPCM is simulated as well for comparison. It is found that the CPCM shows excellent impact resistance with a ballistic limit around 61 % higher than that of the CPCH. Its energy absorption capacities and impact resistance are improved under blunt projectile impact. However, when the impact velocity is above the ballistic limit, the energy absorption EA of the CPCM remains at a constant level, irrespective of the impact velocity.
Highlights The curved sandwich panel with a Miura-ori foldcore is proposed. Impact resistance of curved Miura-ori sandwich panels is investigated. The proposed structure shows a higher ballistic limit than the honeycomb structure. The structure responds in different modes under different impact velocities. Impact position, projectile size and geometry effect the structural performance.
Local impact resistance of curved sandwich panel with Miura-ori foldcore
https://orcid.org/0000-0002-6492-7396
Abstract Curved sandwich structures have demonstrated great potential for engineering applications. However, little study on the impact resistance of the curved Miura-ori sandwich structure is found. In this study, the curved sandwich panel with a curved Miura-ori foldcore (CPCM) is proposed and its impact resistance is numerically investigated. The force displacement history, energy absorption, specific energy absorption, residual velocity of the projectile and the displacement of the rear face sheet are used to evaluate the performances of the CPCM. Various loading scenarios including different impact velocities and positions, different projectile sizes and geometries are considered. Moreover, the curved sandwich panel with a curved honeycomb core (CPCH) that have similar specifications and the same relative density as the CPCM is simulated as well for comparison. It is found that the CPCM shows excellent impact resistance with a ballistic limit around 61 % higher than that of the CPCH. Its energy absorption capacities and impact resistance are improved under blunt projectile impact. However, when the impact velocity is above the ballistic limit, the energy absorption EA of the CPCM remains at a constant level, irrespective of the impact velocity.
Highlights The curved sandwich panel with a Miura-ori foldcore is proposed. Impact resistance of curved Miura-ori sandwich panels is investigated. The proposed structure shows a higher ballistic limit than the honeycomb structure. The structure responds in different modes under different impact velocities. Impact position, projectile size and geometry effect the structural performance.
Local impact resistance of curved sandwich panel with Miura-ori foldcore
https://orcid.org/0000-0002-6492-7396
Abstract Curved sandwich structures have demonstrated great potential for engineering applications. However, little study on the impact resistance of the curved Miura-ori sandwich structure is found. In this study, the curved sandwich panel with a curved Miura-ori foldcore (CPCM) is proposed and its impact resistance is numerically investigated. The force displacement history, energy absorption, specific energy absorption, residual velocity of the projectile and the displacement of the rear face sheet are used to evaluate the performances of the CPCM. Various loading scenarios including different impact velocities and positions, different projectile sizes and geometries are considered. Moreover, the curved sandwich panel with a curved honeycomb core (CPCH) that have similar specifications and the same relative density as the CPCM is simulated as well for comparison. It is found that the CPCM shows excellent impact resistance with a ballistic limit around 61 % higher than that of the CPCH. Its energy absorption capacities and impact resistance are improved under blunt projectile impact. However, when the impact velocity is above the ballistic limit, the energy absorption EA of the CPCM remains at a constant level, irrespective of the impact velocity.
Highlights The curved sandwich panel with a Miura-ori foldcore is proposed. Impact resistance of curved Miura-ori sandwich panels is investigated. The proposed structure shows a higher ballistic limit than the honeycomb structure. The structure responds in different modes under different impact velocities. Impact position, projectile size and geometry effect the structural performance.
Local impact resistance of curved sandwich panel with Miura-ori foldcore
Wang, Genda (Autor:in) / Li, Zhejian (Autor:in) / Lu, Zhaijun (Autor:in) / Liu, Jiefu (Autor:in)
Engineering Structures ; 300
23.11.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Geometric design and mechanical properties of cylindrical foldcore sandwich structures
| Online Contents | 2015