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This paper utilizes the co-simulation technology with Motion and AMESim to build the co-simulation life model of a mechanical system and a hydraulic system of an actuator. In the life model, the time-varying oil pressure in the chamber is considered to describe the working condition of the actuator. First, we analyze main failure mechanisms of the actuator system to obtain weaknesses which affects...
52 cracks of different length appeared around R corner of counterweight angles were checked in 30 service fighter aircrafts, which affected the completion of the flight training seriously. Based on the parts inspection, strength check and stress of broken components, combined with the results of failure fracture about physicochemical analysis, analyzed cracks on the aileron angle. This paper concluded...
This paper presents a finite element analysis method and three interval method based on Gaussian distribution to study the computing problems of random vibration fatigue life. First, the finite element model is established in ANSYS WORKBENCH software, and through modal analysis, natural frequencies and corresponding vibration modes of the structure are obtained. Then, through the PSD random vibration...
The degradation mechanisms and causes of performance parameters of quartz flexible accelerometer were analyzed in this paper, and the table of accelerometers' parametric degradation mechanisms and reason analysis (PDMRA) was made. On the basis of PDMRA, the weak links of accelerometers were analyzed, and the influence of varying external environment stress with time on accelerometers was studied,...
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