基于分块式设计的镁合金管型件碳纤维缠绕增强/加固复合工艺

doi:10.19936/j.cnki.2096-8000.20260628.009

摘要/Abstract

摘要： 为解决汽车、航空航天等领域复杂管型件一体化成形的难题,提出分块式金属管型件碳纤维缠绕增强/加固的复合成形工艺理念,即首先将复杂管型件产品通过拓扑优化拆分为不同规格的管型材模块,然后对各模块进行胶接组合,最后通过碳纤维缠绕实现管型件局部增强和连接加固,其中碳纤维缠绕工艺参数与管材局部性能和连接性能的映射关系是拟解决的关键问题。基于此,针对碳纤维缠绕镁合金管材开展试验研究,主要结论为:相同角度下,随层数增加(2~5层),峰值载荷、总吸能和比吸能递增,5层缠绕时轴向压缩比吸能较裸管提升177%,峰值载荷提升38%;相同层数下,小角度(±30°)增强轴向压缩与三点弯曲性能,大角度(±90°)提升横向压缩、压入及抗扭能力,为管材承载性能精准调控提供依据。其次对管型件连接结构采用“测地线-非测地线”协同纤维缠绕加固,解决了纤维滑移与应力集中问题,发现碳纤维可显著提升连接结构的承载能力和吸能特性。研究成果验证了所提成形工艺理念的工程可行性。

关键词: 分块式设计, 镁合金管材, 碳纤维增强复合材料, 纤维缠绕, 轻量化

Abstract: To solve the problem of integrated forming of complex tubular parts in the fields of automobiles, aerospace, etc., the concept of composite forming process for block-type metal tubular parts with carbon fiber winding reinforcement is proposed. That is, the complex tubular parts products are first divided into tubular profile modules of different specifications through topological optimization, then the modules are glued and combined, and finally local reinforcement and connection reinforcement of the tubular parts are realized through carbon fiber winding. Among them, the mapping relationship between the carbon fiber winding process parameters and the local performance and connection performance of the tube is the key problem to be solved. Based on this, experimental studies were carried out on carbon fiber wound magnesium alloy tubes. The main conclusions are as follows: at the same angle, with the increase of the number of layers(2~5 layers), the peak load, total energy absorption, and specific energy absorption increased. When winding 5 layers, the specific energy absorption of axial compression increased by 177% and the peak load increased by 38% compared with the bare pipe. Under the same number of layers, small angles(±30°) enhanced the axial compression and three-point bending properties, while large angles(±90°) improved the transverse compression, indentation, and torsional resistance, providing a basis for the precise regulation of the bearing performance of the pipes. Secondly, the “geodesic-non-geodesic” collaborative fiber winding reinforcement was adopted for the connection structure of the pipe components to solve the problems of fiber slippage and stress concentration. It was found that carbon fiber could significantly improve the bearing capacity and energy absorption characteristics of the connection structure. The research results verified the engineering feasibility of the proposed forming process concept.

Key words: chunked design, magnesium alloy tube, carbon fiber reinforced composites, fiber winding, lightweight

中图分类号:

TB332

李帅兵, 管志平, 宋家旺, 王桂英, 任明文. 基于分块式设计的镁合金管型件碳纤维缠绕增强/加固复合工艺[J]. 复合材料科学与工程, 2026, 0(6): 74-87.

LI Shuaibing, GUAN Zhiping, SONG Jiawang, WANG Guiying, REN Mingwen. Carbon fiber winding reinforcement/strengthening composite process for magnesium alloy tubular parts based on chunked design[J]. COMPOSITES SCIENCE AND ENGINEERING, 2026, 0(6): 74-87.

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