Harnessing Magnets to Design Tunable Architected Bistable Material.

Chen, Tiegang; Zhang, Xiaoyong; Yan, Xiaojun; Zhang, Bin; Jiang, Jun; Huang, Dawei; Qi, Mingjing; Sun, Ruijie

A new type of tunable bistable metamaterial (TBM) is proposed which is made by embedding magnets into the flexible cellular bistable materials with double tilted beams. To find out the effect of magnets on the mechanics of TBM, several samples are fabricated and magnets with different residual flux density, which is used to describe the magnetic field strength, are embedded. Quasi‐static uniaxial compression tests are performed and the results show that the bistability of the TBM is successfully adjusted by embedding magnets. Furthermore, both numerical and analytical simulations are carried out to further understand the bistable property and energy absorption ability of the proposed metamaterial. A new type of tunable bistable metamaterial (TBM) is proposed. The performance of bistable material is tuned by embedding magnets with different residual flux density in the material. First, the stability of TBM is affected by the residual flux density of magnets Br. Second, the energy absorption of TBM is easily enhanced by embedding magnets with higher residual flux density Br.

MAGNETS; MAGNETIC flux density; ACTINIC flux

Advanced Engineering Materials, 2019, Vol 21, Issue 3, pN.PAG

1438-1656

Academic Journal

10.1002/adem.201801255