Failure mechanism and impact resistance of all GFRP Miura-ori with platforms sandwich structure under low-velocity impact experiments

The traditional Miura-ori was optimized to Miura-ori with platforms by geometric parameters. Two types of impactors were used to conduct low-velocity impact experiments at two specific sites. The damage morphology, response characteristics, and failure mechanism under various energy were systematically investigated. The results reveal that the impact resistance of the node is better than that of the base due to crushing absorbing energy. The impact resistance of the Miura-ori with platforms sandwich structures to the flat-ended impactor is better than that of the hemispherical impactor at the node. Still, the performance at the base is the opposite.

Automated summary

The traditional Miura-ori was optimized into Miura-ori with platforms using geometric parameters. Two types of impactors were used to conduct low-velocity impact experiments at specific locations. The study systematically investigated the damage morphology, response characteristics, and failure mechanism under various energy. The results show that the node has better impact resistance than the base due to its crushing absorbing energy. The Miura-ori with platforms sandwich structures show better impact resistance to the flat-ended impactor at the node, while the performance at the base is the opposite.