Compression response, strength and post-peak response of an axial fiber reinforced tow
Compression response, strength and post-peak response of an axial fiber reinforced tow
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DOI：
10.1016/j.ijmecsci.2009.03.008
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发表时间：
2009-07
影响因子：
7.3
通讯作者：
Shunjun Song;A. Waas;K. Shahwan;O. Faruque;Xinran Xiao
中科院分区：
文献类型：
--
作者：
Shunjun Song;A. Waas;K. Shahwan;O. Faruque;Xinran Xiao
讨论了二维三轴编织碳纤维复合材料（2DTBC）中轴向纤维束压缩不稳定性的有限元（FE）研究结果。一个轴向拖曳的三维有限元模型与ABAQUS商业有限元代码结合使用。为了适应不稳定的峰后回弹行为，采用弧长求解技术来求解有限元方程。编织物的微观结构（几何形状和包装）和测量的非弹性性能的矩阵（原位性能）的明确帐户占通过使用的FE方法。这种类型的详细建模是必要的发展机制为基础的故障预测能力。计算模型提供了一种手段来评估轴向纤维丝束的抗压强度及其对各种微观结构参数的依赖性。它还可作为评估影响2DTBC抗压强度的最重要参数的工具。
This paper discusses the results of a finite element (FE)-based study of the compressive instabilities of axial fiber tows in 2D triaxial braided carbon fiber composites (2DTBC). A 3D FE model of an axial tow is used in conjunction with the ABAQUS commercial FE code. To accommodate unstable snap-back post-peak behavior, an arc-length solution technique is adopted to solve the FE equations. Explicit account of the braid microstructure (geometry and packing) and the measured inelastic properties of the matrix (the in-situ properties) are accounted for via the use of the FE method. This type of detailed modeling is necessary for developing a mechanism-based failure prediction capability. The computational model provides a means to assess the compressive strength of the axial fiber tow and its dependence on various microstructural parameters. It also serves as a tool to assess the most significant parameters that affect compressive strength of a 2DTBC.