航空发动机风扇叶片用2.5维机织物的预变形机理及其RTM相关关键技术研究

批准号:
11572104
项目类别:
面上项目
资助金额:
68.0 万元
负责人:
泮世东
依托单位:
学科分类:
A0807.复合材料与结构力学
结题年份:
2019
批准年份:
2015
项目状态:
已结题
项目参与者:
于国财、苗秋实、丛立新、刘刚、路怀玉、陈志明、黄林
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中文摘要
先进航空发动机风扇叶片的复合材料化已成许多国家的研究重点, 但难以一次成型织造出满足叶片形状要求的纺织预制件,需要通过预变形满足叶片对复杂曲面的要求。国际上对三维织物的研究较多,但对于预变形织物的残余变形、渗透性、固化保形及性能评价方面的研究工作还基本没有开展。本项目针对2.5维角连锁板状织物通过RTM工艺制备发动机风扇叶片过程中所面临的关键科学技术问题,采用试验测试、数值仿真和实验验证相结合的途径,依次开展包括板状织物预变形、预变形织物渗透性、预变形织物RTM复合以及复杂曲面结构件的曲面展开和逆向设计等方面的相关研究工作,获得织物的变形机理和固化保形机理,掌握基于织物预变形的预成型技术和RTM复合相关技术以及复杂曲面结构件的曲面展开技术和织物参数逆向设计技术等相关的关键技术,为研制2.5维角连锁机织发动机风扇叶片提供技术储备和科学依据。本研究结果具有重要的学术意义和工程应用价值。
英文摘要
In order to satisfy the requirement of advanced aero engine technology, composite material blades,especially three-dimensional textile material blades, have been many national key research. But it is difficult to weave directly complex surface preforms that can meet shape requirement of aero engine fan blades, pre-deformation of preforms is necessary and feasible. Many results of three-dimensional fabric,such as fabric weaving, forming ability, permeability, curing process and related mechanical properties, have been obtained. However, works of pre-deformation fabric, such as residual deformation after loading-unloading cycles, permeability, shape preserving ability during curing process and related performance evaluation, have not been carried out untill now. Aiming at the key scientific and technological problems in the RTM(resin transform mould )process of 2.5D angle-interlock woven advanced aero engine fan blade with complex surface, five contents will be carried out successively by the experiment method and numerical simulation in this item. The main contents include: firstly,deformation behavior during the process of loading-unloading cycle and pre-deformation mechanism of woven fabric plate;secondly, effect of pre-deformation pattern and extent on the fabric permeability; thirdly, shape design, fabric cutting, pre-deformation, placement and fixed position of woven fabric; fourthly, shape change mechanism during the RTM process of woven fabric with basic pre-deformation and mechanical evalution of composite structure with pre-deformation fabric reinforcement;lastly, design, preparation and evaluation of 2.5D angle-interlock woven fabric composite structure with complex surface.Through the studies in this project, the pre-deformation mechanism during the loading-unloading cycles and shape preserving mechanism in RTM process of 2.5D angle-interlock woven fabric can be given, and the key technology (preforming technology based on pre-deformation of woven fabric, RTM curing related technology of woven preforms with pre-deformation, surface flattening technology of complex woven structure and reverse design technology of meso parameters of woven fabric)in the manufacture of 2.5D angle-interlock woven engine fan blades with complex surface can also be obtained. The development of domestic composite fan blades can obtain technical reserves and scientific basis from this project.The results obtained in this item can be applied to engineering practice and possesses great important academic value.
本项目针对航空发动机风扇叶片难以一次织造成型的科学难题,提出了通过预变形来实现叶片对复杂曲面的要求。首先,采用循环载荷下拉伸和像框剪切实验测试方法测定了2.5D机织物的拉伸和剪切变形行为特性;基于能量法得到了2.5D机织物的拉伸弹性模量,与实验结果对比发现吻合很好。在经向拉伸实验过程中,织物结构表现出负泊松比行为。针对这一实验现象,本项目给出了合理的理论假设,推导出了织物厚度变化的理论公式,且理论结果和实验结果吻合较好。其次,采用实验测试和数值仿真两种方法分别对剪切角为0˚、10˚、15˚以及20˚的衬经2.5D机织预成型体的渗透率进行了对比分析研究,确定了仿真模型的有效性并利用该仿真模型获得了衬经2.5D机织预成型体的纤维体积份数对2.5D机织预成型体的渗透率的影响规律。同时基于实验结果并结合2.5D机织预成型体的结构特点,给出了用于预测衬经2.5D机织预成型体在剪切变形下的渗透率的经验公式,并用未发生剪切变形的衬经2.5D机织预成型体的渗透率仿真数据确定了该经验公式中的待定参数。进而借助实验结果验证了经验公式的预测精度,并进一步采用该经验公式给出了衬经2.5D机织预成型体的渗透率随剪切变形的变化规律。最后,通过实验测试分别对2.5D机织物复合材料和预变形2.5D机织物复合材料进行基本力学性能进行研究,发现拉伸预变形对2.5维机织复合材料力学性能有一定的影响,降低了材料的力学性能,但降低的幅度不大。同时建立了2.5D机织物复合材料的细观损伤演化模型,该模型能够较充分地考虑纤维束纵向断裂、横向开裂、基体开裂及纤维束-基体界面脱粘等综合损伤模式。基于该有限元模型实现了对2.5D机织复合材料强度及失效模式的有效预报。
期刊论文列表
专著列表
科研奖励列表
会议论文列表
专利列表
The Effect of Shear Deformation on Permeability of 2.5D Woven Preform
剪切变形对 2.5D 编织预制件磁导率的影响
DOI:10.3390/ma12213594
发表时间:2019-11-01
期刊:MATERIALS
影响因子:3.4
作者:Chen, Zhiming;Pan, Shidong;Xu, Peifei
通讯作者:Xu, Peifei
Propagation of damage in bolt jointed and hybrid jointed GLARE structures subjected to the quasi-static loading
准静态载荷作用下螺栓连接和混合连接 GLARE 结构的损伤传播
DOI:10.1016/j.compstruct.2019.03.047
发表时间:2019
期刊:Composite Structures
影响因子:6.3
作者:Xu Peifei;Zhou Zhengong;Liu Tianzhen;Pan Shidong;Tan Xiaojun;Zu Shiming;Zhang Yanfeng
通讯作者:Zhang Yanfeng
Progressive damage investigation of 2.5D woven composites under quasi-static tension
准静态拉伸下 2.5D 编织复合材料的渐进损伤研究
DOI:10.1007/s00707-017-2024-z
发表时间:2019-04
期刊:Acta Mechanica
影响因子:2.7
作者:Lu Huaiyu;Guo Licheng;Liu Gang;Zhong Suyang;Zhang Li;Pan Shidong
通讯作者:Pan Shidong
金字塔点阵夹芯结构的精细优化设计、一体化制备工艺及缺陷敏感性分析
- 批准号:11002041
- 项目类别:青年科学基金项目
- 资助金额:20.0万元
- 批准年份:2010
- 负责人:泮世东
- 依托单位:
国内基金
海外基金
