Topology Optimization Method for Vehicle Body Structure to Meet Multiple Performance Requirements for Body Stiffness, Crashworthiness and NVH at the Same Time

DOI

Bibliographic Information

Other Title
  • 剛性・衝突・NVH の複数性能を同時に満たす車体のトポロジー最適化

Abstract

The topology optimization helps realize highly-rigid yet lightweight vehicle bodies for lower CO2 emissions. We developed a largescale nonlinear topology optimization method that simultaneously addresses linear (torsional stiffness and vibration) problems and nonlinear (crashworthiness) problems to control energy absorption by the vehicle body structure during a collision. The optimization of the entire vehicle body model produced a rigid truss-like structure, and all the objective functions converged to the desired level. Consequently, an optimal shape that can be used as a reference for designing a car body frame structure and that simultaneously satisfies stiffness, crashworthiness and NVH performance requirements was obtained.

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Keywords

Details 詳細情報について

  • CRID
    1390861869684441344
  • DOI
    10.11351/jsaeronbun.55.160
  • ISSN
    18830811
    02878321
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

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