US 12,007,013 B2
Gear-based mechanical metamaterials with continuously adjustable elastic parameters in large range
Xin Fang, Hunan (CN); Jihong Wen, Hunan (CN); and Dianlong Yu, Hunan (CN)
Assigned to NATIONAL UNIVERSITY OF DEFENSE TECHNOLOGY, Hunan (CN)
Appl. No. 17/759,098
Filed by NATIONAL UNIVERSITY OF DEFENSE TECHNOLOGY, Hunan (CN)
PCT Filed Nov. 5, 2021, PCT No. PCT/CN2021/129010
§ 371(c)(1), (2) Date Jul. 19, 2022,
PCT Pub. No. WO2022/095962, PCT Pub. Date May 12, 2022.
Claims priority of application No. 202011220745.0 (CN), filed on Nov. 5, 2020.
Prior Publication US 2023/0044653 A1, Feb. 9, 2023
Int. Cl. F16H 57/00 (2012.01); F16H 1/22 (2006.01); F16H 1/28 (2006.01); F16H 55/17 (2006.01); G06F 30/17 (2020.01); G06F 119/06 (2020.01)
CPC F16H 57/0018 (2013.01) [F16H 1/22 (2013.01); F16H 1/28 (2013.01); F16H 55/17 (2013.01); G06F 30/17 (2020.01); F16H 2057/0056 (2013.01); G06F 2119/06 (2020.01)] 18 Claims
OG exemplary drawing
 
1. A gear-based mechanical metamaterial with continuously adjustable elastic parameters in a range, comprising: a gear array, a frame and connecting shafts,
wherein the gear array is formed by periodically extending mechanical metamaterial cells along an x direction and a y direction; each of the mechanical metamaterial cells is formed by arranging a plurality of gears, and adjacent gears of the plurality of gears are meshed with each other; each of the plurality of gears comprising a center hole and two centrosymmetric irregularly-shaped holes, and a thickness of an elastic arm between each of the two centrosymmetric irregularly-shaped holes and an outer wall of a corresponding one of the plurality of gears is uniformly increased or decreased; and each of the connecting shafts is arranged in a center hole of a corresponding one of the plurality of gears, and the gear array is connected to the frame through the connecting shafts.