涡桨飞机整机振动响应预计与乘员舒适性评估

technical method to predict and evaluate the whole vibration response of turboprop aircraft is established in order to estimate the vibration response level and analyze the effect of interior vibration environment.Combining model-based system theory with human body vibration comfort and health risk standardization,a vibration control design flow chart of turboprop aircraft is drawn,in which the key links and elements are identified.This paper tries to solve some key problems including how to obtain vibration loads,create vibration analysis model,simulate vibration response and evaluate vibration environment in cabin.The validity and accuracy of vibration analysis model and vibration response calculation method of the whole aircraft are verified with the deviations between the analyzed results and the ground vibration test or the vibration response measurement wind tunnel test results.The above methods,implementation process and approach provide some reference for the vibration control forward design of turboprop aircraft.