引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 108次   下载 77 本文二维码信息
码上扫一扫!
分享到: 微信 更多
编织复合材料预制体铺覆成型的数值模拟
王波1,李昂2,杨振宇2
1. 中国航空工业集团有限公司防务工程部,北京 100022;2. 北京航空航天大学固体力学所,北京 100083
摘要:
针对平面编织复合材料预制体在曲面铺覆过程中的局部变形,建立了三维有限元模型,利用商业有限元软件Abaqus模拟了预制体在铺覆成型过程中的纤维束变形规律。研究了0°和45°碳纤维织物在球面铺覆过程的变形过程和局部剪切变形。结果表明,纤维束之间的滑动和纤维束起皱是该预制体在球面铺覆过程中的典型变形模式。在0°织物的球形铺覆变形中,0°和90°纤维束的剪切变形角最小,45°方向纤维束的剪切变形角最大;在45°织物的铺覆变形中,0°和90°纤维束的剪切变形角最大,45°方向纤维束的剪切变形角最小。
关键词:  编织复合材料  预制体  铺覆成型  有限元法
DOI:10.12044/j.issn.1007-2330.2019.02.004
分类号:TB3
基金项目:国防工业技术发展计划 JCKY2016601B001, JCKY2016205C001 国防工业技术发展计划(JCKY2016601B001, JCKY2016205C001)
Numerical Simulations on Draping of Woven Composites Preforms
WANG Bo1,LI Ang2,YANG Zhenyu2
1. Defense Engineering Department,Aviation Industry Corporation of China, Beijing 100022;2. Institute of Solid Mechanics, Beihang University, Beijing 100083
Abstract:
In this paper, a three-dimensional finite element model is established for the local deformation of the woven composite preforms during the draping. The commercial finite element software Abaqus is employed to predict the deformation of the carbon fiber preform in a spherical draping. The deformation process of the 0° and 45° carbon fabrics in the spherical draping process is studied. The results show that sliding between fibers and wrinkling of fibers are the typical deformation modes of the preform during the spherical draping. In the spherical draping deformation of 0° fabric, the shear deformation angle of the 0° and 90° fiber bundles is the smallest, and the shear deformation angle of the fiber bundle is the largest in the 45° direction; for the 45° fabric, the shear deformation angles of the 0° and 90° fiber bundles are the largest, and that of the fiber bundle in the 45° direction is the smallest.
Key words:  Woven composites  Performs  Draping  Finite element method