Design of Lightweight CFRP Automotive Part as an Alternative for Steel Part by Thickness and Lay-Up Optimization.

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ID: 54051
2019
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Abstract
Mechanical properties, such as strength and stiffness, of laminated carbon fiber reinforced plastic (CFRP) are generally affected by the lay-up method. However, no precise design rules to replace steel products with CFRP have been established that satisfy these properties. Therefore, this study proposes a set of rules to design automotive parts with equivalent bending stiffness through structural analysis and genetic algorithms (GAs). First, the thickness of the CFRP product was determined by comparing the bending deformation of steel products by structural analysis. To minimize the orthotropic characteristics of CFRP, the quasi-isotropic lay-up method was implemented to determine the thickness. Next, the lay-up angle was determined using GAs. The optimized lay-up angle of the CFRP product with minimum bending deformation was determined by population generation, cross-over, mutation, and fitness evaluation. CFRP B-pillar reinforcement was fabricated using the determined conditions and the bending deformation of the single component was evaluated. Finally, the B-pillar assembled with CFRP reinforcement was investigated by the drop tower test.
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lee2019designmaterials Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Lee, Jeong-Min;Min, Byeong-Jin;Park, Joon-Hong;Kim, Dong-Hwan;Kim, Byung-Min;Ko, Dae-Cheol;
Journal Materials (Basel, Switzerland)
Year 2019
DOI
E2309
URL
Keywords
optimization reinforcement structural analysis b-pillar carbon fiber reinforced plastic (cfrp) drop tower test genetic algorithms (gas) coronavirus data science citizen participation humanitarian emergency good governance covid-19 infodemic

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