摘要
基于制动过程中能量耗散的研究,建立循环制动过程中温度场分析的快速有限元仿真模型。对完全循环对称式的盘式制动器、鼓式制动器采用二维有限元仿真模型;对于空心盘式制动器考虑散热筋板结构建立三维循环对称有限元模型。考虑耗散热量分配系数、制动盘导热系数、对流换热系数、辐射换热鼷鼠等随温度的瞬态变化,获得瞬态温度场仿真结果。应用试验验证仿真结果,确认快速仿真模型的正确性与实用性,从而为制动器的抗热衰退、热疲劳设计提供了系统的解决方案。
Based on study of the energy dissipation during the vehicle braking and the method of the phase transfer in the time region, the fast finite element simulation model for the braking cycle was established. The two dimensional FlEA model was used to simulate the full symmetrical cycle brake-disk and brake-drum, and the three dimensional model was used for the hollow brake-disk with the thermal dissipation of the rib in the disk. The transient character of the energy dissipation coefficient, the thermal exchange coefficient, and radiation coefficient were considered, and then the simulation results of the transient temperature field distribution of disk were obtained. The simulation results are validated by the experiment test. So the validity and practicability of fast finite element simulation model are verified, and the model can be used in the anti-heat fade design and thermal fatigue design of the vehicle brake system.
出处
《系统仿真学报》
EI
CAS
CSCD
北大核心
2005年第12期2869-2872,2877,共5页
Journal of System Simulation
基金
国家自然基金项目(50575120)
浙江省重大科技攻关项目(2003C11016)。
关键词
制动器
热分析
循环制动
有限元
仿真
brake
thermal analysis
braking cycle
finite element
simulation
