基于固液两相流作用下分层限位器结构的数值研究  

Numerical Study on the Structure of Layered Limiters under the Impact of Solid-liquid Two-phase Flow

作　　者：宁楠 孙衍鹏 贾娟娟 NING Nan;SUN Yanpeng;JIA Juanjuan(Sichuan Lianchang Industrial Design Co.,Ltd.,Chengdu 610031,China)

机构地区：[1]四川联畅工业设计有限公司,成都610031

出　　处：《高速铁路技术》2023年第6期51-56,共6页High Speed Railway Technology

摘　　要：本文采用有限元软件ANSYS对电缆槽内分层限位器抗冲击性能进行仿真,通过改变固液两相流速、固相质量流量等变量,研究了分层限位器结构的动力响应,结果表明:(1)在承受固液两相流冲击时,流速、固相质量流量越大,分层限位器承受的平均冲击力越大,产生的等效应力峰值也越大,构件发生不可恢复的塑性变形概率更高;(2)在不同流速冲击下,分层限位器各层限位器的位移整体从上到下逐渐增大,底层限位器的位移相比顶层限位器呈倍数增长;而随着多次撞击中冲击能量的不断消耗,各层限位器产生的位移逐渐减小直至稳定。This paper applied the finite element software ANSYS to simulate the impact resistance of layered limiters in cable troughs.The dynamic response of the layered limiter structure was studied by changing variables such as the speed of the solid-liquid two-phase flow and the mass flow rate of the solid phase.The results show:(1)When under the impact of a solid-liquid two-phase flow,the larger the flow speed and solid-phase mass flow rate,the greater the average impact force endured by the layered limiter.This results in larger peak equivalent stresses,which increases the probability of irreversible plastic deformation in components.(2)Under different flow speed impacts,the displacement of each layer of limiter in the layered limiter structure increases progressively from top to bottom,with the displacement of the bottom limiter showing a multiple increase compared to the top limiter.However,with the continual consumption of impact energy during repeated impacts,the displacement produced by each layer of limiter gradually decreases until it stabilizes.

关 键 词：电缆槽 冲击 分层限位器 固液两相流 

分 类 号：U22[交通运输工程—道路与铁道工程]