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Investigation on the impact damage of glass using the combined finite/discrete element method

Chen, Xudong (2013)
Ph.D. thesis, University of Birmingham.

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Abstract

Glass and laminated glass are widely used for structural members in industry. To investigate how they fracture under impact as well as the subsequent fragmentation, the combined finite-discrete element method (FEM/DEM) was employed in this thesis.

The mode I fracture model was extended for glass by changing the strain softening curve to a bilinear-like exponential decay shape. Analysis based on this model was performed and numerical examples in both 2D and 3D were investigated. Parametric study was carried out and conclusion was reached that the tensile strength, fracture energy and thickness are the top three parameters in improving the performance of monolithic glass under impact.

Two mixed mode I + II fracture models (the elasto-plastic fracture model and the scaling model) were developed for the glass and the interface in laminated glass. The elasto-plastic model reached some similarity with the Mode I model, while some modification is needed for the scaling model. Results on laminated glass from the FEM/DEM were compared and verified with that from FEM, DEM and experiments. Parametric study on the laminated glass was performed, showing better capacity in energy absorption over monolithic glass.

Type of Work:Ph.D. thesis.
Supervisor(s):Chan, Andrew H. C. and Yang, Jian
School/Faculty:Colleges (2008 onwards) > College of Engineering & Physical Sciences
Department:School of Civil Engineering
Subjects:TA Engineering (General). Civil engineering (General)
Institution:University of Birmingham
ID Code:4263
This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder.
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