Abstract
Cohesive Element (CE) is a well-established finite element for fracture, widely used for the modelling of delamination in composites. However, the computational time of CE-based method is prohibitive. This is because the steep and non-smooth stress gradient in the cohesive zone requires a very fine mesh. In this context, a new type of CE is here proposed, aiming to loosen the mesh constraint and reduce the computational time. It uses a higher-order interpolation of the displacement field with rotational degree of freedom and an adaptive integration scheme based on the status of the element. The proposed CE has been validated through comparison with benchmark solutions of delamination in Mode I, Mode II and Mixed-Mode cases, and has demonstrated superior performance than standard CE in computational efficiency while retaining a high level of accuracy.
Original language | English |
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Title of host publication | ECCM 2018 - 18th European Conference on Composite Materials |
Publisher | Applied Mechanics Laboratory |
Number of pages | 8 |
ISBN (Electronic) | 9781510896932 |
Publication status | Published - 2020 |
Event | ECCM18: 18th European Conference on Composite Materials - Athens, Greece Duration: 24 Jun 2018 → 28 Jun 2018 Conference number: 18 http://www.eccm18.org/ |
Publication series
Name | ECCM 2018 - 18th European Conference on Composite Materials |
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Conference
Conference | ECCM18: 18th European Conference on Composite Materials |
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Abbreviated title | ECCM18 |
Country/Territory | Greece |
City | Athens |
Period | 24/06/18 → 28/06/18 |
Internet address |
Keywords
- Cohesive Element
- Cohesive Zone Modelling
- Delamination
- Fracture Mechanics