結合力要素を用いた有孔CFRP積層板の疲労損傷進展解析

Translated title of the contribution: Numerical Prediction of Fatigue Damage Progress in Holed CFRP Laminates Using Cohesive Elements

矢代 茂樹, 岡部 朋永

Research output: Contribution to journalArticle

Abstract

This study presents a numerical simulation to predicting damage progress in notched composite laminates under cyclic loading by using cohesive zone model. A damage-mechanics concept was introduced directly into the fracture process in cohesive elements in order to express the crack growth by cyclic loading. This approach then conformed to the established damage mechanics and also facilitated understanding of the procedure and the reduction of computation costs. We numerically investigated the damage progress in holed CFRP cross-ply laminates under tensile cyclic loading and compared the predicted damage patterns with experiments. The predicted damage patterns agreed with the experiment results that exhibited the extension of the multiple types of damage (i.e., splits, transverse cracks and delamination) near the hole. A numerical study indicated that the change in the distribution of in-plane shear stress due to delamination induced the extension of splits and transverse cracks near the hole.
Translated title of the contributionNumerical Prediction of Fatigue Damage Progress in Holed CFRP Laminates Using Cohesive Elements
Original languageJapanese
Pages (from-to)310-315
Number of pages6
JournalNihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume75
Issue number751
Publication statusPublished - Mar 25 2009

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