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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...
This paper applies the constant vibration stress accelerated degradation tests to study the effects of random vibration on the parameters stability of quartz flexible accelerometer. Two stress levels of the accelerated degradation test (ADT) are conducted where random vibration spectrum is experienced by accelerometers in the transportation. Then two-step analysis method based on the pseudo life is...
This article provides a numerical method to simulate the reliability of a complicated mechanical system with multiple input random parameters. The method bases on the theory of mechanical reliability and uses a commercial FEM software, ANSYS. The quantitative reliability of the mechanical system is obtained by Monte Carlo simulation. The method is verified by theoretical analysis and is applied to...
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