Thermal Contact Resistance between Aero Engine Compressor Blade and Flexible Fixture

作     者：DAI Shijie WANG Dong ZHANG Huibo LI Shibo WANG Zhiping DAI Shijie;WANG Dong;ZHANG Huibo;LI Shibo;WANG Zhiping

作者机构：State Key Laboratory of Reliability and Intelligence of Electrical EquipmentHebei University of TechnologyTianjin 300130China School of Mechanical EngineeringHebei University of TechnologyTianjin 300130China Tianjin City Civil Aircraft Airworthiness and Repair Key LaboratoryCivil Aviation University of ChinaTianjin 300300China 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2021年第30卷第2期

页      面：530-539页

核心收录：

学科分类：08[工学] 082503[工学-航空宇航制造工程] 0825[工学-航空宇航科学与技术] 

基　　金：This work was supported by the Hebei Provincial Natural Science Fund Key Project(F2017202243) Hebei Provincial Natural Science Fund(E2019202132) Tianjin Natural Science Foundation(18JCTPJC54700) Hebei Province Higher Education Science and Technology Research Project(BJ2019049) China Postdoctoral Science Foundation(2018M641616) National Natural Science Foundation of China(51705128) 

主　　题：titanium alloy micro plasma arc welding thermal contact resistance micro-contact thermal resistance micro-gap thermal resistance finite element model 

摘      要：In the process of two-pass micro plasma arc welding of titanium alloy sheet,based on the thermal contact resistance theory,a three-dimensional transient heat transfer finite element model of contact heat transfer between titanium alloy sheet and flexible fixture was *** effects of contact upper surface temperature,micro-contact thermal resistance,micro-gap thermal resistance,DC and pulse welding on thermal contact resistance were investigated,and the simulation and experimental results were *** results show that the thermal contact resistance increases as the temperature increases when the temperature of the contact upper surface (titanium alloy sheet) is in the range of 290-350 *** effect of micro-contact thermal resistance on the thermal contact resistance is 26.1%-46.3% larger than the micro-gap thermal *** thermal contact resistance of pulse welding is 3.1%-3.5% larger than DC *** error of simulation and experimental results of weld pool depth is 8.6%,which verifies the reliability of the model.