Simulation on fatigue behavior of fiber composites considering the common defects

Altamimi, Fares (2021) Simulation on fatigue behavior of fiber composites considering the common defects. [USQ Project]


Composite materials are used for engineering applications to improve the mechanical properties of engineering materials. Composites consist of two or more component materials which have different mechanical and physical properties. A unique feature of these materials is that they obtain modified properties which do not exist in individual components. In particular, the strength to weight ratio of composite materials are higher than that for each component alone. A composite material which is used for engineering application can be under fatigue loading. This leads to the crack initiation and growth on the material and eventually the failure of material if fatigue loading continues for a long time. Due to the importance of composite materials for engineering applications, a deep understanding of the composite behavior under fatigue loading is required. Experimental tests to achieve this knowledge are complicated, time consuming and sometimes expensive. However, with the help of engineering software such as ABAQUS, the fatigue behavior of composite models can be investigated with less complexity. In addition, it is confirmed in the literature that this software can predict reliable results compared to the experimental test data. This project aims to investigate the fatigue crack growth on a composite model under the cyclic load. A compact tension (CT) specimen is selected for modeling under three different loads to compare the fatigue crack growth on the composite model under these loadings. The extended finite element method (XFEM) implemented in ABAQUS is used to study the crack growth on the model and three output variables of STATUSXFEM, PHISLM and PSILSM are extracted from the simulation results to describe the crack initiation and crack growth parameters. The simulation results show that the higher applied load on the composite model leads to formation of a larger crack on the model. The higher loads also result in the more damaged cells on the model based on the obtained STATUSXFEM and PHISLM contours. The higher loads on the model, however, have no significant effect on the value of PSILSM contour.

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Item Type: USQ Project
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering (1 Jul 2013 - 31 Dec 2021)
Supervisors: Yousif, Belal
Qualification: Bachelor of Engineering (Honours, mechanical)
Date Deposited: 12 Jul 2023 05:49
Last Modified: 12 Jul 2023 05:49
Uncontrolled Keywords: composite, fatigue loading, cyclic load, finite element method

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