Elastic　metamaterials　have　received　extensive　attention　due　to　their　proven　track　record　in　wave　attenuation.　In　this　study,　a　novel　one-dimensional　lever-type　elastic　metamaterial　model　is　designed　to　achieve　low-frequency　wave　attenuation　by　introducing　an　adjustable　lever　mechanism　in　a　conventional　mass-spring　resonator.　The　dispersion　relation　and　ef-fective　mass　expression　of　the　proposed　metamaterial　are　theoretically　derived.　Then,　the　band　structure　characteristics　and　the　effect　of　parameters　on　the　band　gap　are　analyzed　in　detail.　The　results　show　that　by　selecting　appropriate　lever　ratio　and　initial　rotation　an-gle,　a　low　frequency　band　gap　can　be　obtained　and　the　wave　attenuation　capability　within　the　band　gap　can　be　enhanced.　Finally,　the　dynamic　response　of　the　proposed　structure　is　calculated　by　direct　numerical　integration　method　to　verify　the　analytical　results.　Fur-thermore,　the　application　potential　of　the　proposed　elastic　metamaterial　in　shock　wave　attenuation　is　demonstrated　by　analyzing　the　spatial　propagation　of　wave　packets　along　the　proposed　structure.　This　study　provides　a　meaningful　reference　for　the　design　of　other　tunable　elastic　metamaterials　to　attenuate　waves.(c)　2023　Elsevier　Inc.　All　rights　reserved.