机车显示器散热数值模拟和优化

Numerical simulation and optimization of heat dissipation for locomotive display

文章以某型机车显示器为研究对象,借助ANSYS软件进行热仿真分析,并将仿真结果与实验室测试结果进行对比,验证了仿真模型的可靠性。原显示器后盖板为Al6063机加而成,成本高、周期长,为满足产品快速生产交付、成本更低的需求,将后盖板材料更换为铸造铝合金ADC12。为保证散热性能不降低,结合设计经验和实际生产工艺,对后盖板结构、导热材料等进行优化,并引入热管技术来提升后盖板的热均衡性能。结果表明,优化后的显示器后盖板散热性能明显优于原方案,满足产品需求。

In this paper,a locomotive display is taken as the research object,and the thermal simulation analysis is carried out by ANSYS software.The simulation results are compared with the laboratory test results to verify the reliability of the simulation model.The rear cover plate of original display is made of Al6063,which has high cost and long cycle.In order to meet the needs of rapid production delivery and lower cost of products,the rear cover plate material is replaced with the ADC12 cast aluminum alloy.In order to ensure that the heat dissipation performance is not reduced,combined with the design experience and the actual production process,the structure,thermal conductive materials and others of the rear cover plate are optimized,and the heat pipe technology is introduced to improve the heat balance performance of the rear cover plate.The results show that the heat dissipation performance of the optimized display rear cover plate is obviously better than that of the original scheme,which meets the product requirements.