Digital test method for vibration of aero-engine

• Main Authors: XIAO DASHENG, TANG KE, XIAO HONG, ZHOU LEI, WANG DONGHUAN
• Format: Patent
• Language: Chinese; English
• Published: 27.02.2024
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; MEASURING; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

The invention belongs to the technical field of aero-engine performance prediction, and particularly relates to an aero-engine vibration digital test method. According to the specific technical scheme, the method comprises the following steps: dividing test run test data into cold start data and hot start data; training by using the cold starting data and obtaining a vibration cold starting model; training by using the hot start data to obtain a thermal performance model, and training the thermal parameters and the hot start data together to obtain a vibration hot start model; according to different test run starting states, a vibration digital test of the engine is carried out. The actual starting state, namely the cold starting state and the hot starting state of the test run are considered in the vibration digital test process, and particularly, thermal performance parameters and a thermal performance parameter model are introduced in the digital test run process of hot starting, so that the vibration digi