A butterfly-shaped multi-form compression-resistant energy-absorbing unit and energy-absorbing structure

Abstract

The application discloses a butterfly-shaped multi-form compression-resistant energy-absorbing unit and an energy-absorbing structure. The energy-absorbing unit comprises a constraint ring and at least two elastic members. The elastic member is in a ring structure, and the ring track comprises a first curve segment and a second curve segment connected together. The first curve segment and the second curve segment are connected at a concave position. The coaxial lines of the elastic members are nested with each other. The constraint ring is sleeved outside the concave position of the elastic members. The energy-absorbing unit can be applied to different application scenarios. Different requirements for resisting impact and energy absorption can be met by changing the thickness and height of the elastic member. In the compression deformation process, the second curve segment of the elastic member is deformed to absorb energy. Then, the first curve segment of the elastic member is deformed to absorb energy by being concave to the middle. Finally, the curve segment is continuously deformed to absorb energy until it is dense. The deformation stroke is large, the energy-absorbing and buffering effect is better, and the vibration in other directions can be effectively absorbed in addition to the front stress direction.