Finite Element Analysis for Microscopic Damage in Single-Fiber Composites Using a Cohesive Zone Model
Finite Element Analysis for Microscopic Damage in Single-Fiber Composites Using a Cohesive Zone Model
复制标题
使用内聚区模型对单纤维复合材料中的微观损伤进行有限元分析
DOI：
10.6089/jscm.33.170
复制
发表时间：
2007
影响因子：
9.1
通讯作者：
N. Takeda
中科院分区：
文献类型：
--
作者：
M. Nishikawa;T. Okabe;N. Takeda
使用凝聚区模型对单纤维复合材料的微观损伤进行有限元分析西川正明、冈部友永、竹田信夫（2006年12月22日接收）本文对单纤维复合材料（SFC）的微观损伤进行了数值研究。提出了一种内聚区模型（CZM），用于研究纤维增强复合材料中典型的微观损伤。该模型阐明了界面脱粘行为受基体塑性和开裂的影响，对纤维的轴向应力恢复有重要影响。我们进行了蒙特-卡罗模拟嵌入纤维的破碎。蒙特-卡罗模拟表明，这些微观损伤是嵌入纤维破碎的重要因素。这些模拟结果也与分析模型进行了比较。这些讨论表明，在嵌入纤维的破碎过程是由纤维/基体界面的内聚参数控制。
Finite Element Analysis for Microscopic Damage in Single-Fiber Composites Using a Cohesive Zone Model Masaaki NISHIKAWA, Tomonaga OKABE and Nobuo TAKEDA (Received December 22, 2006) This paper numerically investigates the microscopic damage in a single-fiber composite (SFC). A cohesive zone model (CZM) is presented to investigate the typical microscopic damages observed in the SFC. The CZM clarifies that the behavior of interfacial debonding, which influences significantly on the axial stress recovery of the embedded fiber, is greatly affected by matrix plasticity and cracking. We conduct a Monte-Carlo simulation for the fragmentation of the embedded fiber. The Monte-Carlo simulation demonstrates that these microscopic damages are important factors in the fragmentation of the embedded fiber. These simulated results are also compared with analytical models. These discussions reveal that the fragmentation process in an embedded fiber is controlled by the cohesive parameters of the fiber/matrix interface.