TY - JOUR
T1 - Unraveling tensegrity tessellations for metamaterials with tunable stiffness and bandgaps
AU - Liu, Ke
AU - Zegard, Tomás
AU - Pratapa, Phanisri P.
AU - Paulino, Glaucio H.
N1 - Funding Information:
We acknowledge support from the US NSF (National Science Foundation) through grants 1538830 , and the Raymond Allen Jones Chair at the Georgia Institute of Technology. In addition, Ke Liu acknowledges support of the China Scholarship Council (CSC). The authors thank Dr. Raj K. Pal for helpful discussions about computational homogenization during the development of this research.
Funding Information:
We acknowledge support from the US NSF (National Science Foundation) through grants 1538830, and the Raymond Allen Jones Chair at the Georgia Institute of Technology. In addition, Ke Liu acknowledges support of the China Scholarship Council (CSC). The authors thank Dr. Raj K. Pal for helpful discussions about computational homogenization during the development of this research.
Publisher Copyright:
© 2019
PY - 2019/10
Y1 - 2019/10
N2 - Tensegrity structures resemble biological tissues: A structural system that holds an internal balance of prestress. Owing to the presence of prestress, biological tissues can dramatically change their properties, making tensegrity a promising platform for tunable and functional metamaterials. However, tensegrity metamaterials require harmony between form and force in an infinitely–periodic scale, which makes the design of such systems challenging. In order to explore the full potential of tensegrity metamaterials, a systematic design approach is required. In this work, we propose an automated design framework that provides access to unlimited tensegrity metamaterial designs. The framework generates tensegrity metamaterials by tessellating blocks with designated geometries that are aware of the system periodicity. In particular, our formulation allows creation of Class-1 (i.e., floating struts) tensegrity metamaterials. We show that tensegrity metamaterials offer tunable effective elastic moduli, Poisson's ratio, and phononic bandgaps by properly changing their prestress levels, which provide a new dimension of programmability beyond geometry.
AB - Tensegrity structures resemble biological tissues: A structural system that holds an internal balance of prestress. Owing to the presence of prestress, biological tissues can dramatically change their properties, making tensegrity a promising platform for tunable and functional metamaterials. However, tensegrity metamaterials require harmony between form and force in an infinitely–periodic scale, which makes the design of such systems challenging. In order to explore the full potential of tensegrity metamaterials, a systematic design approach is required. In this work, we propose an automated design framework that provides access to unlimited tensegrity metamaterial designs. The framework generates tensegrity metamaterials by tessellating blocks with designated geometries that are aware of the system periodicity. In particular, our formulation allows creation of Class-1 (i.e., floating struts) tensegrity metamaterials. We show that tensegrity metamaterials offer tunable effective elastic moduli, Poisson's ratio, and phononic bandgaps by properly changing their prestress levels, which provide a new dimension of programmability beyond geometry.
KW - Class-1 tensegrity
KW - Metamaterial
KW - Programmable materials
KW - Tensegrity lattice
KW - Tunable material properties
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U2 - 10.1016/j.jmps.2019.05.006
DO - 10.1016/j.jmps.2019.05.006
M3 - Article
AN - SCOPUS:85068542979
SN - 0022-5096
VL - 131
SP - 147
EP - 166
JO - Journal of the Mechanics and Physics of Solids
JF - Journal of the Mechanics and Physics of Solids
ER -