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Multi-objective optimization of vehicle floor panel with a laminated structure based on V-shape development model and Taguchi-based grey relational analysis

Salmani, H ; Sharif University of Technology | 2022

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  1. Type of Document: Article
  2. DOI: 10.1007/s00158-021-03100-0
  3. Publisher: Springer Science and Business Media Deutschland GmbH , 2022
  4. Abstract:
  5. In this paper, the V-shape development model approach for designing an automotive floor panel made by laminated structure is investigated to attain the best trade-off between the system and subsystem level requirements while improving the local and global performance of the vehicle. For this purpose, the bending and torsional stiffness of the body structure, as well as mass, strength, and vibration attenuation of the floor panel, are considered as design objectives at the system and subsystem levels. A multi-objective discrete optimization of a laminated configuration is performed using the Taguchi-based grey relational analysis. Material grades and thicknesses of the sandwich panel face sheets and thickness of the viscoelastic core with five levels are taken as discrete design variables. Moreover, the contribution ratios of each design factor on the performance characteristics are determined using the analysis of variance. By observing the results of the proposed approach, it is revealed that with an appropriate combination of layers, an optimum sandwich structure can be designed to fulfill all objectives simultaneously. Compared to the initial model, static strength and vibration attenuation are improved by 47.18% and 17.14%, respectively, while the global level characteristics, i.e., overall body structure stiffness, are properly preserved. Furthermore, the floor panel mass is decreased by 59.69%, which reduces the total mass of the structure by 1.75%. © 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature
  6. Keywords:
  7. Finite element ; Laminated structure ; Multi-objective optimization ; Taguchi method ; Automobile bodies ; Economic and social effects ; Finite element method ; Floors ; Laminating ; Sandwich structures ; Shape optimization ; Stiffness ; Structural design ; Structural optimization ; Taguchi methods ; Vibrations (mechanical) ; Development model ; Floor panels ; Grey relational analysis ; Laminated structures ; Multi-objectives optimization ; Subsystem level ; System levels ; Taguchi's methods ; V-shape ; V-shape development model ; Multiobjective optimization
  8. Source: Structural and Multidisciplinary Optimization ; Volume 65, Issue 3 , 2022 ; 1615147X (ISSN)
  9. URL: https://link.springer.com/article/10.1007/s00158-021-03100-0