Topology design of additively manufactured CFRP for impact resistance via B-spline-based equivalent static load method

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering Pub Date : 2025-04-28 DOI:10.1016/j.compositesb.2025.112577

Xiaobao Zhi , Shangqin Yuan , Shijie Xu , Zhonghao Zhao , Chenyang Li , Yamin Li , Jihong Zhu , Weihong Zhang

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引用次数: 0

Abstract

Additive manufacturing (AM) extends the design freedom of continuous fiber-reinforced polymer (CFRP) composites, enabling the fabrication of complex structures with tailored properties. However, it is still challenging of structural topology optimization for impact resistance, due to its inherent nonlinearity. In this work, a B-spline-based Equivalent Static Load (BSESL) method is proposed for impact-resistant designs with low-velocity loading and manufacturability constraints. Pseudo-density and fiber orientation are concurrently optimized and parameterized through B-splines, ensuring smooth fiber orientations without additional filtering due to the high-order continuity of splines. By adjusting the control parameter sizes (CPS) of the B-spline fields, a trade-off between mechanical performance and manufacturability is evaluated. The effectiveness of the proposed method is validated through theoretical design and drop-weight experiments, exhibiting significant improvements in impact resistance and manufacturability.

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基于b样条等效静载荷法的增材CFRP抗冲击拓扑设计

增材制造（AM）扩展了连续纤维增强聚合物（CFRP）复合材料的设计自由度，使制造具有定制性能的复杂结构成为可能。然而，由于其固有的非线性，结构拓扑优化在抗冲击性能方面仍然是一个挑战。在这项工作中，提出了一种基于b样条的等效静态载荷（BSESL）方法，用于具有低速载荷和可制造性约束的抗冲击设计。伪密度和纤维取向通过b样条同时优化和参数化，确保平滑的纤维取向，而无需由于样条的高阶连续性而额外滤波。通过调整b样条场的控制参数大小（CPS），评估了机械性能和可制造性之间的权衡。通过理论设计和落锤试验验证了该方法的有效性，表明该方法在抗冲击性能和可制造性方面有显著改善。

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来源期刊

Composites Part B: Engineering 工程技术-材料科学：复合

CiteScore

24.40

自引率

11.50%

发文量

784

审稿时长

21 days

期刊介绍： Composites Part B: Engineering is a journal that publishes impactful research of high quality on composite materials. This research is supported by fundamental mechanics and materials science and engineering approaches. The targeted research can cover a wide range of length scales, ranging from nano to micro and meso, and even to the full product and structure level. The journal specifically focuses on engineering applications that involve high performance composites. These applications can range from low volume and high cost to high volume and low cost composite development. The main goal of the journal is to provide a platform for the prompt publication of original and high quality research. The emphasis is on design, development, modeling, validation, and manufacturing of engineering details and concepts. The journal welcomes both basic research papers and proposals for review articles. Authors are encouraged to address challenges across various application areas. These areas include, but are not limited to, aerospace, automotive, and other surface transportation. The journal also covers energy-related applications, with a focus on renewable energy. Other application areas include infrastructure, off-shore and maritime projects, health care technology, and recreational products.