Effect of Foam-Core Treatment Process on Mechanical Properties of VARI Molded Composites

JIN Haoyue; YAN Chao; WANG Yuning; YANG Mengxin; LIU Qiufeng

doi:10.16080/j.issn1671-833x.25020013

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Effect of Foam-Core Treatment Process on Mechanical Properties of VARI Molded Composites

更新时间：2026-04-14

- Effect of Foam-Core Treatment Process on Mechanical Properties of VARI Molded Composites
- Aeronautical Manufacturing Technology Vol. 69, Issue 4, (2026)
- 作者机构：
  
  中航西安飞机工业集团股份有限公司,西安,710089
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671-833x.25020013
  CLC：
- Published：2026
- 稿件说明：
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JIN Haoyue, YAN Chao, WANG Yuning, et al. Effect of Foam-Core Treatment Process on Mechanical Properties of VARI Molded Composites[J]. Aeronautical Manufacturing Technology, 2026, 69(4).
DOI：

JIN Haoyue, YAN Chao, WANG Yuning, et al. Effect of Foam-Core Treatment Process on Mechanical Properties of VARI Molded Composites[J]. Aeronautical Manufacturing Technology, 2026, 69(4). DOI： 10.16080/j.issn1671-833x.25020013.

摘要

泡沫夹芯结构树脂基复合材料在航空工业中应用广泛，采用真空辅助树脂灌注工艺能显著降低其制造成本。该类夹层结构的液体成型过程中，树脂在渗透预制体时易发生流动不均，可能导致孔隙、干斑等缺陷。因此，有必要对成型过程中的树脂流动行为进行分析与调控，以提升泡沫夹芯复合材料的产品质量。本研究通过有限元法模拟了不同泡沫芯预处理方式下夹层结构的树脂浸润过程，并对固化后的夹芯板进行了力学性能分析，结果表明，对泡沫芯进行打孔处理是一种更为有效的预处理方法。

Abstract

The resin matrix composite materials with foam-core sandwich structures are widely used in the aviation industry

and the vacuum assisted resin infusion process can effectively reduce manufacturing costs. During the liquid molding process of sandwich structures composite materials

the incorrect flow behavior of resin during impregnation of the preforms can lead to defects such as voids and dry spots. To improve the product quality of foam-core sandwich structure composites

it is necessary to optimize the flow behavior of the resin during the molding process. In this study

the finite element method is used to simulate the impregnation process of preforms with different pre-treatment methods of foamcore material. The mechanical analysis was performed on the solidified sandwich structures composite panels. The results indicate that perforating the foam-core material is a more effective pretreatment method.

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Related Institution

Beijing Key Laboratory of Civil Aircraft Structures and Composite Materials, COMAC Beijing Aeronautical Science & Technology Research Institute

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