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基于ANSYS软件平台,建立了发动机高模试验系统传动轴强度和疲劳数值仿真模型,并进行了数值仿真与分析计算,研究了传动轴强度和疲劳与位移之间的关系,得出了传动轴设计准则。通过对发动机高模试验系统扩压器与氮气破空设备的研究、分析与计算,得出了储能气缸和氮气破空环管的设计准则。采用该设计准则设计的发动机高模试验系统解决了发动机试验启动过程压力过高、回火严重、发动机喷管变形等问题,试验系统满足发动机设计对高模试验的要求。通过该试验系统考核的发动机已成功应用于发射卫星的运载火箭系统。
Based on the ANSYS software platform, the numerical simulation model of the strength and fatigue of the transmission shaft of the high-modulus test system of the engine was established. The numerical simulation and analysis were carried out. The relationship between the strength of the transmission shaft and fatigue and displacement was studied. Guidelines. Through the research, analysis and calculation of the engine high-pressure test system diffuser and nitrogen blank equipment, the design criteria of the energy storage cylinder and the nitrogen blow-off collar pipe were obtained. The engine high-mold test system designed with this design criterion solves the problems of over-high pressure, severe tempering and engine nozzle deformation during the start-up of the engine test. The test system meets the requirements of engine design for high-mold test. The engines tested by this test system have been successfully used in launch vehicle systems that launch satellites.