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http://dx.doi.org/10.20910/JASE.2019.13.4.66

Evaluation of Structural Safety of Linear Actuator for Flap Control of Aircraft  

Kim, Dong-Hyeop (Department of Mechanical Engineering, Hankyong National University)
Kim, Sang-Woo (Department of Mechanical Engineering, Hankyong National University)
Publication Information
Journal of Aerospace System Engineering / v.13, no.4, 2019 , pp. 66-73 More about this Journal
Abstract
The objective of this study was to evaluate the structural safety of the basic design for the linear actuator for the flap control of aircrafts. The kinetic behavior of the linear actuator was determined using the multi-body dynamics (MBD) analysis, and the contact force was calculated to be used as input data for the structural analysis based on the finite element analysis. In the structural analysis, the thermal and static behaviors of the linear actuator satisfying the designed velocity were examined, and the structural safety of the linear actuator evaluated. Moreover, the dynamic behaviors of the key components of the linear actuator were investigated by the modal analysis. The actuation rod linearly moved with about 5 mm/s when the motor operated at 225 rpm and the maximum contact force of 32.83 N occurred between two driving gears. Meanwhile, the structural analysis revealed that the maximum thermal and static stresses were 1.57% and 78% of the yield strength of steel, respectively, and they were in a safe range of the structure. In addition, the linear actuator for the basic design is stable to the resonance by avoiding the natural frequencies of the components.
Keywords
Linear Actuator; Multi-body Dynamics; Static Structural Analysis; Modal Analysis; Thermal Structural Analysis;
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