齿轮力学超材料构筑及其性能研究

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中图分类号：TB34；O39 文献标志码：A DOI：10.16385/j.cnki.issn.1004-4523.202309024

Abstract： Mechanical metamaterials exhibit manycounterintuitive mechanical properties bychanging theirinteral geometry.We proposeamechanicalmetamaterialcomposedofgearsasbasicelements.Thegearbasedmechanicalmetamaterialproposed here is a multistable structure，whichcanbecontiuouslyconvertedbetweenvarious stablestatesthroughthe meshingofgeartethThe continuous switchingbetweenstates enables themechanicalmetamaterialtoexhibitinsitucontinuouslytunablemechanicalproper ties.Themechanicalpropertiesofthemechanicalmetamaterialswerestudiedbyusingthefiniteelementmethod.Theresultsshow thatthegearbasedmechanicalmetamaterialsexhibitedcontinuouslyadjustablesifness，variablegeneralizedshearstifss，and adjustableaccelerationtransmisibilty.Theseuniquepropertiesofmechanical metamaterialsprovidenewideas forcreating pro grammable metamaterials with insitucontinuouslyadjustable mechanicalproperties，andareexpected tobeappied inthfieldsof smart materials and engineering.

Keywords： mechanical metamaterials;gear;mechanical properties;transmissibility;continuously adjustable

力学超材料通过改变自身微观结构，可达到均匀材料所不具备的力学性能[1-3]。（剩余11113字）