摘要
高速电梯对安全钳材料性能提出了更高的要求,在安全钳制动过程中,钳块与导轨间高速摩擦带来的温升可能会导致安全钳性能的退化。以ABAQUS软件为平台建立安全钳导轨系统的有限元模型,对钳块和导轨间的摩擦行为提出了一种更符合实际工况的理论新模型并编写ABAQUS子程序实现,该模型中用到的参数通过对钳块材料进行力学实验获得。通过对钳块与导轨间摩擦生热过程的仿真,考察最高温升是否超过允许值,实现对钳块安全性能的检验。仿真结果表明在高速摩擦环境下,钳块表面高温区域温升剧烈,同时钳块和导轨间的接触热导对于钳块表面的最大温升有显著影响。
High-speed elevator requires higher performance of safety gear. During the braking process,the performance of safety gear probably degenerates because of the temperature rise caused by the high-speed friction between safety gear and rail. The finite element model of safety gear system is established in ABAQUS. A new theory model of friction behavior between safety gear and rail is set up and programmed in the form of ABAQUS subroutine.The values of parameter used in the model are gained by mechanical tests on the material. Through the simulation of braking process,the highest temperature on the surface is obtained. The simulation results show that the temperature risessignificantly on the surface of the safety gear and the contact thermal conductivity between the gear and the rail has significant effect on the highest temperature rise.
出处
《机械设计与研究》
CSCD
北大核心
2015年第2期136-139,共4页
Machine Design And Research
基金
国家自然科学基金资助项目(11372183)
关键词
高速电梯
安全钳
温升
有限元
ABAQUS
high-speedelevator
safety gear
temperature rise
finite element
ABAQUS
