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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2022, Vol. 43 ›› Issue (9): 226007-226007.doi: 10.7527/S1000-6893.2021.26007

• Solid Mechanics and Vehicle Conceptual Design • Previous Articles     Next Articles

Design method of stiffened plate for vibration reduction based on band gaps

JIANG Zhou1,2, FAN Yu2,3, LI Lin2,3, SHI Jiahui2   

  1. 1. Beijing Institute of Aerospace Systems Engineering, Beijing 100076, China;
    2. School of Energy and Power Engineering, Beihang University, Beijing 100083, China;
    3. Beijing Key Laboratory of Aero-engine Structure and Strength, Beihang University, Beijing 100083, China
  • Received:2021-06-23 Revised:2021-07-26 Online:2022-09-15 Published:2021-08-25
  • Supported by:
    National Science and Technology Major Project (2017-IV-0002-0039, J2019-IV-0023-0091); Aeronautical Science Foundation of China (2019ZB051002); Advanced Jet Propulsion Creativity Center (HKCX2020-02-013, HKCX2020-02-016)

Abstract: Aiming at the vibration reduction requirements of engineering periodic structures such as stiffened plates in service conditions, a design method for vibration control using the band gap characteristics in the periodic structure is proposed. Band gap refers to a frequency band where elastic waves in a periodic structure cannot propagate. By constructing the periodic structure, a band gap can be created in a specific frequency band. Hence, the elastic waves can be controlled, so as to achieve the purpose of vibration control. Based on this academic idea, a design method for periodic structure based on the band gap is established, which solves the key technologies including the evaluation of the performance for vibration control based on the band gaps, the selection of the band gaps, and the sparse sampling of the multi-dimensional parameter space. Then, taking the orthogonal stiffened plate as an example, the height and thickness of the ribs are designed to achieve a band gap with a bandwidth of 500 Hz. The forced response analysis shows that boundary conditions and material mistuning have little influences on the performance of vibration reduction. Moreover, based on the structural compliance, the static analysis has been employed to check the static performance of stiffened plate. It is found that the designed stiffened plate also has higher static stiffness, which meets the engineering requirements.

Key words: periodic structure, band gap, design of stiffened plate, vibration reduction, inverse problem

CLC Number: