公开(公告)号：US11074901B2

公开(公告)日：2021-07-27

申请号：US16096356

申请日：2017-04-26

申请人： EMPA Eidgenössische Materialprüfungs—und Forschungsanstalt

发明人： Tommaso Delpero ,  Andrea Bergamini

IPC分类号： F16F15/00 ,  G10K11/165 ,  G10K11/04

摘要： A unit cell of an artificial phononic crystal for building of an artificial phononic metamaterial, showing reduced mechanical vibrations in a defined frequency range with at least one band gap in the band structure dispersion relation of the unit cell. The unit cell includes at least one building block and at least one mechanical connection connected to the building block, showing reduced mechanical vibrations in a defined frequency range with tailored dispersion properties with at least one band gap is sought. This is accomplished by forming the building block as a toroid, with a central opening and a front surface from which a first multiplicity of struts, which are tiltable relatively to the principal direction, is extending from the front surface. More than one strut is inclined with respect to the principal direction so that a rotation of the toroid around the principal direction is possible.