<p>Carbon fiber reinforced polymers (CFRP) are widely used in automotive lightweight structural design. However, the high cost of CFRP materials and their brittleness significantly reduce their load-bearing capacity and energy absorption efficiency. This paper proposes a composite pipe made of a hybrid structure combining a carbon fiber-wrapped and a metal, which combines the ductility and stability of metal with the numerous advantages of carbon fiber, compensating for the shortcomings of both materials. The paper analyzes the design of the fiber winding angle of carbon fiber and the pattern angle of the metal pipe surface. Experimental data is obtained, and an agent-based model is constructed for comparison and analysis using the sparrow search algorithm (SSA) and genetic algorithm. The multi-objective results of the SSA are validated through finite element analysis. The results show that the SSA converges faster and is approximately 2/7 faster than the genetic algorithm, while also providing precise results. The initial peak force and energy absorption corresponding to the optimization targets are 50003.9104 N and 12.1608 J/g, respectively, with the two carbon fiber winding angles and metal pipe surface pattern angles being 56.72°, 54.05°, and 140.49°. This study demonstrates that the composite pipe has good crash resistance performance, and the design and optimization of the composite pipe provide valuable reference for subsequent structural and shape improvements.</p>

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Optimization of CFRP/metal composite origami thin-walled components

  • Yong Xiao,
  • YiHang Shi,
  • Yu Liu,
  • HaiYang Gao,
  • Ning Tong,
  • QianWen Wu

摘要

Carbon fiber reinforced polymers (CFRP) are widely used in automotive lightweight structural design. However, the high cost of CFRP materials and their brittleness significantly reduce their load-bearing capacity and energy absorption efficiency. This paper proposes a composite pipe made of a hybrid structure combining a carbon fiber-wrapped and a metal, which combines the ductility and stability of metal with the numerous advantages of carbon fiber, compensating for the shortcomings of both materials. The paper analyzes the design of the fiber winding angle of carbon fiber and the pattern angle of the metal pipe surface. Experimental data is obtained, and an agent-based model is constructed for comparison and analysis using the sparrow search algorithm (SSA) and genetic algorithm. The multi-objective results of the SSA are validated through finite element analysis. The results show that the SSA converges faster and is approximately 2/7 faster than the genetic algorithm, while also providing precise results. The initial peak force and energy absorption corresponding to the optimization targets are 50003.9104 N and 12.1608 J/g, respectively, with the two carbon fiber winding angles and metal pipe surface pattern angles being 56.72°, 54.05°, and 140.49°. This study demonstrates that the composite pipe has good crash resistance performance, and the design and optimization of the composite pipe provide valuable reference for subsequent structural and shape improvements.