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Experimental and numerical analysis of progressive damage and failure behavior of carbon Woven-PPS

机译：碳编织PPS渐进损伤和失效行为的实验性和数值分析

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摘要

This paper presents a study of the progressive damage of 5-harness satin weave carbon/PPS composite plates having three layers through experimental and numerical investigations. Uniaxial tensile tests were conducted for three different orientations of the composite material samples (warp, diagonal and weft) for their characterization at room temperature. The damage initiation and its progress were visualized via CCD cameras. Digital Image Correlation (DIC) analyses were used to quantify the evolution of strain fields, where the resulting failure markings were characterized via microscopic analyses. In parallel, a three-dimensional finite element model of the test was developed using ABAQUS/Explicit to reproduce the behavior of the material, where a three-dimensional Hashin damage initiation criteria with its complementary damage progress law was implemented using a VUMAT subroutine. Cohesive zone elements were used between the composite layers to simulate the delamination in the course of deformation. A good agreement was achieved between the experimentally obtained strain fields using DIC and the numerical results. Microscopic analyses in the unnotched and notched specimens revealed the active damage modes such as the intra-ply damage and the delamination. It was found that the fiber fracture was the dominating failure mechanism for all the studied specimens.
机译：本文介绍了通过实验和数值研究的5线束缎面编织碳/ PPS复合板的渐进损伤的研究。在室温下表征，对复合材料样品（经翘曲，对角线和纬线）进行三种不同取向进行单轴拉伸试验。通过CCD相机可视化损坏启动及其进度。数字图像相关（DIC）分析用于量化应变场的演变，其中通过微观分析表征了所得的失效标记。并行地，使用ABAQUS /明确开发了测试的三维有限元模型，以再现材料的行为，其中三维哈希岛损伤启动标准利用其互补损伤进度法进行了使用，使用VUMAT子程序实施。在复合层之间使用粘性区域元件，以模拟变形过程中的分层。使用DIC和数值结果在实验获得的应变场之间实现了良好的一致性。非流学和缺口标本中的显微镜分析显示了积极损伤模式，例如血层内损伤和分层。发现纤维骨折是所有研究标本的主导故障机制。

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