A novel model for predicting deformation of thermoplastic composites during heat-pressing process

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering Pub Date : 2024-10-21 DOI:10.1016/j.compositesb.2024.111912

Jiezheng Qiu , Zhonghai Xu , Chaocan Cai , Dianyu Chen , Shiqing Huang , Chunxing Hu , Xiaodong He

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引用次数: 0

Abstract

Carbon fiber/polyetheretherketone (CF/PEEK) thermoplastic composites are widely used in the aerospace industry due to their excellent mechanical properties and high-temperature resistance. However, the research on heat-pressing deformation and residual stress during high-temperature and high-pressure heat-pressing processes in CF/PEEK was relatively deficient. In this paper, a framework coupled with crystallization kinetics, micromechanics and thermodynamics was developed to predict the heat-pressing deformations of CF/PEEK and it was conducted by UMAT, DISP and UEXPAN subroutines. Moreover, the predictive model was verified by experiments effectively. Finally, we compared the difference in residual stress distributions between symmetric and asymmetric lay-ups and found that the melting temperature, thickness, angle and sequence of layers have a significant impact on the heat-pressing deformation. This work provided an effective tool for predicting heat-pressing deformations, which is great of significance in the manufacturing and application of CF/PEEK.

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预测热塑性复合材料在热压过程中变形的新型模型

碳纤维/聚醚醚酮（CF/PEEK）热塑性复合材料因其优异的机械性能和耐高温性被广泛应用于航空航天领域。然而，对 CF/PEEK 高温高压热压过程中的热压变形和残余应力的研究相对不足。本文利用 UMAT、DISP 和 UEXPAN 子程序，结合结晶动力学、微观力学和热力学，建立了 CF/PEEK 热压变形预测框架。此外，我们还通过实验对预测模型进行了有效验证。最后，我们比较了对称铺层和非对称铺层的残余应力分布差异，发现熔化温度、厚度、角度和层序对热压变形有显著影响。这项工作为预测热压变形提供了有效工具，对 CF/PEEK 的制造和应用具有重要意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.