Research on the Impact Protection Performance of Annular Dampers
Annular dampers have been widely used in the field of seismic resistance,but their performance under impact is less studied.In order to study the performance of the annular damp-er under impact,the finite element software LS-DYNA was used to establish a finite element model of the annular damper under impact and the energy dissipation of its dimension parameters-outer diameter R1 and inner diameter R2 were analyzed under equal mass and impact energy.The results show that the annular damper can deform and absorb shock energy under impact,and has good energy dissipation capacity.The outside diameter R1 and inside diameter R2 have different effects on the impact force,displacement and energy of the damper.When the outside diameter is determined,increasing the inside diameter of the damper reduces the displacement generated by the damper,increases the peak value of the impact force,and decreases the holding time.When the outside diameter of the damper increases,the displacement generated by the damper increases and the peak impact force decreases.The research results can provide reference for the design of structural anti-impact device.
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维普
