On the dynamics and control of mechanical properties of hierarchical rotating rigid unit auxetics

被引:62
作者
Dudek, Krzysztof K. [1 ,2 ]
Gatt, Ruben [1 ]
Mizzi, Luke [1 ]
Dudek, Miroslaw R. [2 ]
Attard, Daphne [1 ]
Evans, Kenneth E. [3 ]
Grima, Joseph N. [1 ,4 ]
机构
[1] Univ Malta, Metamat Unit, Fac Sci, MSD-2080 Msida, Malta
[2] Univ Zielona Gora, Inst Phys, Ul Szafrana 4a, PL-65069 Zielona Gora, Poland
[3] Univ Exeter, Coll Engn Math & Phys Sci, Exeter EX4 4QF, Devon, England
[4] Univ Malta, Dept Chem, Fac Sci, MSD-2080 Msida, Malta
关键词
POISSONS RATIO; METAMATERIALS; BEHAVIOR; ELASTICITY;
D O I
10.1038/srep46529
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
In this work, we investigate the deformation mechanism of auxetic hierarchical rotating square systems through a dynamics approach. We show how their deformation behaviour, hence their mechanical properties and final configuration for a given applied load, can be manipulated solely by altering the resistance to rotational motion of the hinges within the system. This provides enhanced tunability without necessarily changing the geometry of the system, a phenomenon which is not typically observed in other non-hierarchical unimode auxetic systems. This gives this hierarchical system increased versatility and tunability thus making it more amenable to be employed in practical application which may range from smart filtration to smart dressings.
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页数:9
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