tailieunhanh - Design of micro-vibration isolation system for a remote-sensing satellite payload using viscoelastic materials

When a satellite is in orbit, micro vibration generated by its actuators (such as reaction wheels, deployable mechanisms, etc.) will affect the imaging quality of the camera. Viscoelastic materials are utilized as passive isolators to reduce these micro vibrations due to their simple construction and excellent energy dissipation capacity. | Nội dung Text Design of micro-vibration isolation system for a remote-sensing satellite payload using viscoelastic materials Engineering Solid Mechanics 8 2020 69-76 Contents lists available at GrowingScience Engineering Solid Mechanics homepage esm Design of micro-vibration isolation system for a remote-sensing satellite payload using viscoelastic materials M. Safarabadia H. Izia J. Haghshenasb and H. Koochaki Kelardehc a Advanced Composites amp Nanocomposites Research ACNR Lab School of Mechanical Engineering College of Engineering University of Tehran Tehran Iran b Satellite Research Institute SRI Iranian Space Research Center ISRC Tehran Iran c Max Planck Institute for the Physics of Complex Systems Germany A R T I C L EI N F O ABSTRACT Article history When a satellite is in orbit micro vibration generated by its actuators such as reaction wheels Received 8 July 2019 deployable mechanisms etc. will affect the imaging quality of the camera. Viscoelastic materials Accepted 22 August 2019 are utilized as passive isolators to reduce these micro vibrations due to their simple construction Available online and excellent energy dissipation capacity A finite element model of the entire satellite as well as 22 August 2019 Keywords the camera is constructed using the ABAQUS software and then four reaction wheels are included Reaction Wheel Disturbances as the sources of micro-vibrations and their forces are added to the model. To isolate these Micro-Vibration Isolation vibrations four square sorbothane pads are designed and added in the finite element model as Passive Control viscoelastic dampers located under the camera between the camera and satellite bus. The Viscoelastic Materials generalized Maxwell model is employed to describe the dynamic properties of the viscoelastic elements in the ABAQUS software. Finally by analyzing and comparing the dynamic responses of the system with and without the viscoelastic sorbothane pads it is realized that .

• Cơ khí - Chế tạo máy
• Micro vibration isolation system
• Remote sensing satellite payload
• The generalized Maxwell model
• The ABAQUS software
• The viscoelastic sorbothane pads