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Effective Mechanical Responses of a Class of 2D Chiral Materials
Author(s) -
Wang Yun-Che,
Ko Tsai-Wen,
Ren Xuejun
Publication year - 2020
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.202070037
Subject(s) - deformation (meteorology) , tension (geology) , stress (linguistics) , bending , materials science , von mises yield criterion , enhanced data rates for gsm evolution , geometry , midpoint , composite material , mathematics , structural engineering , compression (physics) , engineering , telecommunications , philosophy , linguistics , finite element method
Doubly chiral material, a class of hierarchical materials, expands laterally under horizontal straining in tension when its left and bottom edge are rollers, indicating that its effective Poisson’s ratio is negative; see article number 2000277 by Yun‐Che Wang and co‐workers. The lateral deformation of the top stress‐free surface is nonuniform due to couplings between tension and bending deformation modes. Large Mises stress (red) occurs in sigmoidal‐shape linking ligaments, except for their midpoint, and near the intersections between the ligaments and circular units. Most of the solid phase, including what is inside the circular regions, is under less stress (blue). Chiral materials may be ideal sensors in certain applications.