机电工程技术2025，Vol.54Issue(10)：27-30,69,5.DOI:10.3969/j.issn.1009-9492.2025.10.006
盘式制动器热机械性能的数值研究
Numerical Study on Thermal Mechanical Properties of Disc Brake for Light Commercial Vehicle
段春雷 1王可1
作者信息
- 1. 兰州交通大学机电工程学院,兰州 730070
- 折叠
摘要
Abstract
The purpose of the brake is to use the frictional resistance to slow down the moving vehicle.In disc brakes,when the brake pedal is stepped down,the pedal is squeezed by the components on it.The disc brake bears mechanical stress and thermal stress at the same time.Thermal stress is more significant than mechanical stress.Three disc brakes with different shapes are selected,and their thermal mechanical properties are analyzed and numerically simulated.A three-dimensional thermal-structural coupling model is established to realize the transient thermal analysis and transient structural analysis of disc brake profiles with frictional heat.The finite element method is used to solve the thermal structure problem of the disc brake,and the transient temperature field and thermal stress field of the disc brake during emergency braking are obtained.The three profiles are compared using different parameters,including the maximum surface temperature,equivalent thermal stress and thermal deformation.The results show that the equivalent stress of the grooved surface is 34 MPa,while the equivalent stress of the solid type and the drilled type is 80 MPa and 57 MPa,respectively.This also shows that the heat dissipation efficiency of the groove brake is much higher than the other two configurations.In general,when the shape can better dissipate heat to the surroundings,the thermal stress will develop and the thermal deformation will be significantly reduced,which will help to research on the thermal stress of the brake shape.关键词
制动盘/有限元模拟/热结构耦合/瞬态分析Key words
brake disc/finite-element modeling/heat structural coupling/transient analysis分类
交通工程引用本文复制引用
段春雷,王可..盘式制动器热机械性能的数值研究[J].机电工程技术,2025,54(10):27-30,69,5.
