Effect of interlaminar toughness on the low-velocity impact damage in composite laminates
Based on the continuum damage mechanics (CDM) and the cohesive zone model (CZM), a numerical analysis method for the evaluation of damage in composite laminates under low‐velocity impact is proposed. The intraply damage including matrix crack and fiber fracture is represented by the CDM which takes...
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| Published in: | Polymer composites Vol. 37; no. 4; pp. 1085 - 1092 |
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| Main Authors: | , , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Newtown
Blackwell Publishing Ltd
01-04-2016
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| Subjects: | |
| Online Access: | Get full text |
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| Summary: | Based on the continuum damage mechanics (CDM) and the cohesive zone model (CZM), a numerical analysis method for the evaluation of damage in composite laminates under low‐velocity impact is proposed. The intraply damage including matrix crack and fiber fracture is represented by the CDM which takes into account the progressive failure behavior in the ply, using the damage variable to describe the intraply damage state. The delamination is characterized by a special contact law including the CZM which takes into account the normal crack and the tangential slip. The effect of the interlaminar toughness on the impact damage is investigated, which is as yet seldom discussed in detail. The results reveal that as the interlaminar fracture toughness enhances, the delamination area and the dissipated energy caused by delamination decrease. The contribution of normal crack and tangential slip to delamination is evaluated numerically, and the later one is the dominant delamination type during the impact process. Meanwhile, the numerical prediction has a good agreement with the experimental results. The study is helpful for the optimal design and application of composite laminates, especially for the design of interlaminar toughness according to certain requirements. POLYM. COMPOS. 37:1085–1092, 2016. © 2014 Society of Plastics Engineers |
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| Bibliography: | National Key Basic Research Program of China - No. 2010CB631102 ArticleID:PC23270 National Natural Science Foundation of China - No. 51173100; No. 51373090 Natural Science Foundation of Shandong Province - No. JQ201016 ark:/67375/WNG-9DVMZJ5C-R istex:2790825AC3C5FA172793C4C356F9DCCF09B0E3F3 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
| ISSN: | 0272-8397 1548-0569 |
| DOI: | 10.1002/pc.23270 |