铁道标准设计2016，Vol.60Issue(9)：36-41,6.DOI:10.13238/j.issn.1004-2954.2016.09.008
减压环在被动柔性防护网中的耗能作用研究
Study on the Ring-brake Energy Dissipater in Passive Flexible Protection
摘要
Abstract
Based on the complexity of the falling rock protection barriers and the efficiency to study different system parameters, the numerical method is becoming an important method to explore the dynamic mechanical response of the passive flexible protection system. To study the energy dissipation and buffer action of the ring-brake energy dissipater in the passive flexible protection against rockfall, an actual passive flexible protection prototype is employed to establish two finite element models for flexible protection system with and without ring-brake energy dissipater. Based on ANSYS/LS-DYNA, the dynamic response of the two finite element models with different impact energy and impact position is analyzed. The results show that the ring-brake energy dissipater can enhance the flexibility of the passive flexible protection and improve the performance of the site of action, while the energy dissipation capacity of the passive flexible protection is also significantly improved. Meanwhile, the comparative analysis of the numerical results provides references for the coming experiment design to calibrate the numerical model and identify the governing characteristics of the components.关键词
交通工程/被动柔性防护网/有限元方法/减压环/耗能/冲击Key words
Traffic engineering/Passive flexible protection system/Finite element method/Ring-brake energy dissipater/Energy dissipation/Impact分类
交通工程引用本文复制引用
刘成清,田帅,陈驰,何广杰,赵必大..减压环在被动柔性防护网中的耗能作用研究[J].铁道标准设计,2016,60(9):36-41,6.基金项目
国家自然科学基金项目(51278428) （51278428）
中央高校基本科研业务费专项资金资助项目(2682014CX066) （2682014CX066）
