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|Title: ||Finite element modelling of bending of CFRP laminates: multiple delaminations|
|Authors: ||Ullah, Himayat|
Harland, Andy R.
Price, Daniel S.
Silberschmidt, Vadim V.
|Issue Date: ||2012|
|Publisher: ||© Elsevier|
|Citation: ||ULLAH, H. ... et al., 2012. Finite element modelling of bending of CFRP laminates: multiple delaminations. Computational Materials Science, 52 (1), pp. 147-156|
|Abstract: ||Carbon fibre-reinforced polymer (CFRP) composites are widely used in aerospace, automotive and construction
structures thanks to their high specific strength and stiffness. They can also be used in various
products in sports industry. Such products can be exposed to different in-service conditions such as large
bending deformation and multiple impacts. In contrast to more traditional homogeneous structural
materials like metals and alloys, composites demonstrate multiple modes of damage and fracture due
to their heterogeneity and microstructure. Damage evolution affects both their in-service properties
and performance that can deteriorate with time.
These failure modes need adequate means of analysis and investigation, the major approaches being
experimental characterisation and numerical simulations. This research deals with a deformation behaviour
and damage in composite laminates due to quasi-static bending. Experimental tests are carried out
to characterise the behaviour of a woven CFRP material under large-deflection bending. Two-dimensional
finite element (FE) models are implemented in the commercial code Abaqus/Explicit. A series of simulations
is performed to study the deformation behaviour and damage in CFRP for cases of high-deflection
bending. Single and multiple layers of bilinear cohesive-zone elements are employed to model the onset
and progression of inter-ply delamination process. Numerical simulations show that damage initiation
and growth are sensitive to a mesh size of cohesive-zone elements. Top and bottom layers of a laminate
experience mode-I failure whereas central layers exhibit a mode-II failure behaviour. The obtained
results of simulations are in agreement with experimental data.|
|Description: ||This article was published in the journal, Computational Materials Science [© Elsevier]. The definitive version is available at: http://www.sciencedirect.com/science/article/pii/S0927025611000826|
|Version: ||Accepted for publication|
|Publisher Link: ||http://www.sciencedirect.com/science/article/pii/S0927025611000826|
|Appears in Collections:||Published Articles (Mechanical, Electrical and Manufacturing Engineering)|
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