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针对锁紧面接触热阻合理取值问题,基于某机载液冷机箱、ASSAC标准模块、模拟热源、温度采集工具和液冷源等设备搭建了试验平台,开展了多个工况的试验测试、仿真分析和验证工作。研究结果表明,在无导热填料时,锁紧面接触热阻约为0.226℃/W;在导轨槽与模块之间的锁紧面涂覆导热硅脂时,锁紧面接触热阻约为0.034℃/W。
Aiming at the reasonable value of the contact resistance of the locking surface, a test platform was set up based on an on-board liquid-cooled chassis, ASSAC standard module, simulated heat source, temperature acquisition tool and liquid-cooled source, , Simulation analysis and verification. The results show that the thermal contact resistance of the locking surface is about 0.226 ℃ / W when there is no thermal conductive filler. The thermal contact resistance of the locking surface when the locking surface between the guide groove and the module is coated is about 0.034 ℃ / W.