TY - JOUR
T1 - Two-dimensional mechanical metamaterials with bending-induced expansion behavior
AU - Li, Xiang
AU - Fan, Zhengjie
AU - Fan, Rong
AU - Lu, Yang
PY - 2020/7/6
Y1 - 2020/7/6
N2 - A conventional thin homogeneous elastic plate shows no net lateral strain when subjected to a pure bending load. Here, a two-dimensional (2D) metamaterial exhibiting an exotic bending-induced expansion behavior is designed based on the structure unit with a non-symmetric contact under tensile and compressive loads. Expansion behavior was demonstrated in the fabricated 2D metamaterial structures in four-point bending, tension, and compression tests and corresponding simulations. The bending-expansion ratio, defined as the lateral strain times the curvature radius divided by the length of the unit cell, is a non-dimensional parameter depending on the geometry of the structure.
AB - A conventional thin homogeneous elastic plate shows no net lateral strain when subjected to a pure bending load. Here, a two-dimensional (2D) metamaterial exhibiting an exotic bending-induced expansion behavior is designed based on the structure unit with a non-symmetric contact under tensile and compressive loads. Expansion behavior was demonstrated in the fabricated 2D metamaterial structures in four-point bending, tension, and compression tests and corresponding simulations. The bending-expansion ratio, defined as the lateral strain times the curvature radius divided by the length of the unit cell, is a non-dimensional parameter depending on the geometry of the structure.
UR - http://www.scopus.com/inward/record.url?scp=85088047054&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85088047054&origin=recordpage
U2 - 10.1063/5.0011876
DO - 10.1063/5.0011876
M3 - 21_Publication in refereed journal
VL - 117
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 1
M1 - 011904
ER -