基于先进拉挤工艺的帽形长桁预成型模具的优化重构

doi:10.19936/j.cnki.2096-8000.20220728.031

复合材料科学与工程 ›› 2023, Vol. 0 ›› Issue (3): 59-67.DOI: 10.19936/j.cnki.2096-8000.20220728.031

基于先进拉挤工艺的帽形长桁预成型模具的优化重构

陈博毅, 齐俊伟^*, 王跃全, 石甲琪

南京航空航天大学材料科学与技术学院,南京 210001

收稿日期:2022-02-22 出版日期:2023-03-28 发布日期:2023-04-28
通讯作者: 齐俊伟(1964—),男,硕士,高级工程师,主要从事先进复合材料自动化成型技术方面的研究,qijunwei@nuaa.edu.cn。
作者简介:陈博毅(1997—),男,硕士研究生,主要从事先进复合材料方面的研究。
基金资助:
国家商用飞机制造工程技术研究中心创新基金项目(COMAC-SFGS-2021-668)

Optimization and reconstruction of hat beam preforming mold based on advanced pultrusion process

CHEN Boyi, QI Junwei^*, WANG Yuequan, SHI Jiaqi

School of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210001, China

Received:2022-02-22 Online:2023-03-28 Published:2023-04-28

摘要/Abstract

摘要： 对帽形长桁先进拉挤(Advanced Pultrusion,ADP)原理样机制备预制体试验进行了研究。预制体成型质量的影响因素有预成型模具曲面外形、预成型温度、张力大小等,其中模具曲面外形设计不合理会影响层合板温度均匀性及张力传递。结合M21预浸料材料属性在ABAQUS中建立模型模拟预成型过程,层合板变形模拟结果与实际试验基本吻合,验证了弹性参数及边界条件的可靠性。将变形后的预浸料层合板节点坐标通过CATIA文件夹内GSD_PointSpline-LoftFrom-Excel宏命令导入CATIA,运用创成式外形设计重构模具曲面外形。模具优化后重复预成型模拟试验,研究结果表明运用此方法重构模具曲面外形改善了层合板与模具之间的贴附性,架空间隙包络体积减小至优化前间隙体积的2.6%,从而可提高预成型过程中层合板的温度均匀性,便于预浸料层间滑移运动,减少预制体缺陷产生。

关键词: 复合材料, 先进拉挤, 帽形长桁, 预浸料, 预成型模具, 贴附性

Abstract: The experiment of preparing preforms with the advanced pultrusion (ADP) principle prototype of hat beam was studied. The influencing factors of the molding quality of the preforms include the surface shape of the preforming mold, the preforming temperature, the tension, etc. Among them, the unreasonable design of the mold surface shape would affect the temperature uniformity and the tension transmission. Combined with the material properties of M21 prepreg, a model was established in ABAQUS to simulate the preforming process, and the simulation results of laminate deformation are basically consistent with the actual test, which verified the reliability of the elastic parameters and boundary conditions. The deformed prepreg laminate node coordinates was imported into CATIA through the GSD_PointSpline-LoftFrom-Excel macro command in the CATIA folder, and generative shape design was used to reconstruct the surface shape of the mold. The pre-forming simulation test was repeated after mold optimization. The research results show that using this method to reconstruct the surface shape of the mold improves the adhesion between the prepreg and the mold, and the envelope volume of the overhead gap is reduced to 2.6% of the gap before optimization, which can improve the pre-forming process. The temperature uniformity of the prepreg is improved, which can facilitate the sliding movement between the prepreg layers and reduce the occurrence of defects in the preform.

Key words: composites, advanced pultrusion, hat beam, prepreg, preforming mold, adhesion

中图分类号:

TB332

陈博毅, 齐俊伟, 王跃全, 石甲琪. 基于先进拉挤工艺的帽形长桁预成型模具的优化重构[J]. 复合材料科学与工程, 2023, 0(3): 59-67.

CHEN Boyi, QI Junwei, WANG Yuequan, SHI Jiaqi. Optimization and reconstruction of hat beam preforming mold based on advanced pultrusion process[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(3): 59-67.

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基于先进拉挤工艺的帽形长桁预成型模具的优化重构

Optimization and reconstruction of hat beam preforming mold based on advanced pultrusion process

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