Effect of Number of Layers and Binder Tow Size on Mechanical Properties of 3D Woven Composites

Abstract

Composite structures are being increasingly used in a wide range of industries due to their high stiffness and strength to weight ratios compared to traditional materials such as metals and alloys. However, due to the anisotropic nature of composite materials and complex architecture of textile composites, the prediction of their mechanical properties presents a greater challenge than that of traditional materials. This thesis presents a multiscale modelling approach to predict the elastic and damage behaviour of 3D woven composites, which is based on Representative Volume Elements (RVEs) of 3D weaves and implemented in ABAQUS. Also, an experimental investigation into the tensile, compressive, impact and compression after impact properties of 3D woven composites with different binder tow sizes and number of warp layers is undertaken and the tensile properties are found to be in good agreement with the predictions obtained from the model.Firstly, a literature review is carried out identifying current models and limitations of these models. Secondly, the modelling methodology is described including boundary conditions and implementation of damage models using a user defined subroutine in ABAQUS/Explicit. Following this, the experimental investigation is presented and the results are compared to the predictions. Recommendations for future work are suggested at the end of the thesis which would further develop the model.

Date of Award	1 Aug 2021
Original language	English
Awarding Institution	The University of Manchester
Supervisor	Prasad Potluri (Supervisor) & Arthur Wilkinson (Supervisor)