基于ANSYS起重机盘式制动器循环制动温度场分析  

Analysis on cyclic braking temperature field of disc brake of crane based on ANSYS

作　　者：魏焱焱 WEI Yanyan(Jiangyin Branch of Jiangsu Province Special Equipment Safety Supervision Inspection Institute,Jiangyin 214400,Jiangsu,China)

机构地区：[1]江苏省特种设备安全监督检验研究院江阴分院,江苏江阴214400

出　　处：《矿山机械》2018年第11期49-55,共7页Mining & Processing Equipment

摘　　要：为探究起重机用盘式制动器因循环工作制动引起的制动盘温升和制动失效事故机理,首先以制动功理论、有限元热机耦合理论推导制动盘温升计算模型,在此基础上利用有限元软件ANSYS建立模型,施加经理论计算得到的制动力矩、时间和比压等边界条件,模拟经6次循环制动引起的制动盘温度场变化。得到每次制动后的温度场分布和经6次制动的温升曲线,并探究不同制动工况对仿真结果的影响,最后以摩擦因数的热衰退为依据对温升曲线进行修正,提出了制动盘饱和温度的概念。研究成果为起重机盘式制动器热衰退的机理探讨、制动失效事故的预防和制动器工作级别的划分提供理论基础,对起重机机构的设计和整机安全防护具有一定的理论参考价值。In order to explore the braking temperature rise of the disc brake of the crane induced by cyclic service braking and the failed braking, the theory of braking power and the theory of finite element thermal-mechanical coupling were applied to deduce the calculation model of the temperature rise of the braking disc, and ANSYS was applied to built the model. After that, the model was imposed the theoretically calculated boundary conditions such as braking torque, time and specific pressure, and the variation of the temperature field of the braking disc after six cycles of braking was simulated. The distribution of the temperature field after each cycle of braking and the variation curve of the temperature rise after six cycles of braking were obtained, and the influence of various braking mode on the simulation results was explored. Finally, the variation curve of the temperature rise was corrected based on thermal recession of friction coefficient, and the concept of saturated temperature of the braking disc was proposed. The research results offered theoretical basis for the investigation of thermal recession mechanism of the disc brake of the crane, the prevention of failed braking and the grading of working level of the brake, and of certain theoretical significance for the mechanism design and safety protection of the crane.

关 键 词：起重机 盘式制动器 循环工作制动 温度场 

分 类 号：TH218[机械工程—机械制造及自动化]