摘要
圆环型阻尼器在抗震领域已经获得了广泛的应用,但有关撞击作用下的性能研究较少。为了研究圆环型阻尼器在撞击作用下的性能,本文通过有限元软件LS-DYNA,建立了圆环形阻尼器在撞击作用下的有限元模型,对其尺寸参数——外径R_(1)和内径R_(2)进行了等质量和等撞击能量下的耗能分析。结果表明:圆环形阻尼器在撞击作用下会产生变形,吸收撞击能量,且具有较好的耗能能力。其外径R_(1)和内径R_(2)对圆环型阻尼器的撞击力,位移和能量均产生不同的影响。在外径确定的情况下,增大阻尼器的内径会使阻尼器产生的位移减小,撞击力峰值增大,持时减小;增大阻尼器的外径会使阻尼器产生的位移增大,撞击力峰值减小。研究成果可为结构防撞击装置的设计提供参考。
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 damper 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 R_(1) and inner diameter R_(2) 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 R_(1) and inside diameter R_(2) 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.
作者
李显辉
李文博
LI Xianhui;LI Wenbo(College of Architectural Engineering,Shanxi Vocational University of Engineering Science and Technology,Jinzhong 030600,China;China Construction Science and Industry Corporation Ltd.,Shenzhen 518000,China)
出处
《太原学院学报（自然科学版）》
2024年第1期72-78,共7页
Journal of TaiYuan University:Natural Science Edition
基金
山西工程科技职业大学校级科研基金项目(KJ202216,KJ202217)。
关键词
冲击
圆环形阻尼器
耗能能力
数值模拟
impact
annular damper
energy consumption capacity
numerical simulation
