Aeroelastic Response and Structural Improvement for Heavy-Duty Truck Cab Deflectors

Numerical simulations on the fluid-structure interaction were conducted using commercial software STAR-CCM+ and ABAQUS. The aeroelastic responses of a deflector under several different working conditions were simulated utilizing finite volume and finite element methods to investigate the aeroelastic problem of automotive deflectors. Results showed that the structural response of a top deflector is minimal under the influence of aerodynamics given its large structural stiffness. The size of the top deflector was optimised by using thickness as a variable. The volume and quality of the top deflector were significantly reduced, and its lightweight performance was improved to satisfy the stiffness performance requirement. The vibration of a side deflector structure was mainly induced by the turbulence on the structure surface. The amplitude of vibration was small and the vibration gradually converged in a few seconds without obvious regularity. Six structures were constructed to reduce the deformation of the side deflector structure and improve the noise, vibration and harshness performance of the heavy-duty truck. Five of these structures significantly reduced the elastic response of the side deflector.

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    • Abstract reprinted with permission of SAE International.
  • Authors:
    • Wang, Jing-yu
    • Yan, Wei
    • Sang, Tao
    • Guo, Peng
    • Wu, Bin
    • Zhang, Jing-long
    • Hu, Xingjun
    • Dong, Chun-bo
  • Publication Date: 2019-1-18


  • English

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  • Accession Number: 01703239
  • Record Type: Publication
  • Source Agency: SAE International
  • Report/Paper Numbers: 2019-01-5004
  • Files: TRIS, SAE
  • Created Date: Apr 22 2019 12:00PM