Fracture analysis of finite length angle-ply composite double cantilever beam specimens

Published on Feb 1, 2019
· DOI :10.1177/0954406218764518
Amir Reza Shahani18
Estimated H-index: 18
(KNTU: K.N.Toosi University of Technology),
R Abolfathitabar1
Estimated H-index: 1
(KNTU: K.N.Toosi University of Technology)
Source
Abstract
References21
Newest
#1Aniello Riccio (Seconda Università degli Studi di Napoli)H-Index: 26
#2Angela Russo (Seconda Università degli Studi di Napoli)H-Index: 7
Last. A. Raimondo (Seconda Università degli Studi di Napoli)H-Index: 13
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Abstract In this paper, a novel numerical procedure for delamination growth simulation able to evaluate the Fibre Bridging effect has been used to numerically investigate the mechanical behaviour of stiffened composite panels. The proposed methodology, implemented in ANSYS® FEM code by Ansys Parametric Design Language (APDL), allows to take into account the real variation of the Critical Energy Release Rate associated to the Fibre Bridging phenomenon. A first numerical application has been perfo...
29 CitationsSource
#1Aniello Riccio (Seconda Università degli Studi di Napoli)H-Index: 26
#2Angela Russo (Seconda Università degli Studi di Napoli)H-Index: 7
Last. Andrea Sellitto (Seconda Università degli Studi di Napoli)H-Index: 14
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Abstract Numerical simulations on stiffened composite panels have been performed in order to investigate the influence of fibre bridging phenomenon on the onset and on the evolution of skin-stringer debonding. A novel numerical procedure for delamination growth simulation, implemented in ANSYS® FEM code by Ansys Parametric Design Language and enhanced to take into account G Ic variations related to the fibre bridging phenomenon, has been used to numerically simulate the skin-stringer separation....
1 CitationsSource
#1M. Heidari-Rarani (IUST: Iran University of Science and Technology)H-Index: 16
#2Mahmood M. Shokrieh (IUST: Iran University of Science and Technology)H-Index: 53
Last. Pedro P. Camanho (University of Porto)H-Index: 70
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This paper proposes a three-linear cohesive zone model (CZM) to capture the mode I delamination initiation and propagation behavior of unidirectional DCB specimens under large-scale fiber bridging conditions (R-curve behavior). This CZM is produced by superposing two bilinear CZMs and the required parameters are obtained from the experimental R-curve of a DCB specimen only knowing the initiation fracture toughness (Gi), the fiber bridging length (lFPZ) and the steady state toughness (Gss). The p...
73 CitationsSource
#1Mahmood M. Shokrieh (IUST: Iran University of Science and Technology)H-Index: 53
#2M. Heidari-Rarani (IUST: Iran University of Science and Technology)H-Index: 16
Last. S. Rahimi (IUST: Iran University of Science and Technology)H-Index: 1
view all 3 authors...
Abstract Mode I delamination toughness ( G Ic ) of a laminated composite depends not only on the stacking sequence or indirectly coupling parameter of D c = D 12 2 D 11 D 22 , but also on specimen geometrical ratios a 0 / b and a 0 / h . In this study, a non-uniformity ratio, β = ( G Imax − G Iavg )/ G Iavg %, is introduced to take into account the influence of above factors on the energy release rate distribution along the width of double cantilever beam (DCB) specimens simultaneously. Results ...
45 CitationsSource
#1Mahmood M. Shokrieh (IUST: Iran University of Science and Technology)H-Index: 53
#2M. Heidari-Rarani (IUST: Iran University of Science and Technology)H-Index: 16
Last. Majid R. Ayatollahi (IUST: Iran University of Science and Technology)H-Index: 65
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Abstract A novel theoretical approach is presented to calculate the mode I interlaminar fracture toughness ( G Ic ) of double cantilever beam (DCB) specimens with low ratio of initial crack length-to-thickness ( a 0 /2 h ). This method is based on a sixth-order beam theory, namely Reddy-Bickford beam (RB), on Winkler elastic foundation (WEF) to account for both transverse shear deformation of the beam and local effects at the delamination front (root rotation). RB with only two generalized displ...
15 CitationsSource
#1Michal K. Budzik (University of Bordeaux)H-Index: 14
#2Julien Jumel (University of Bordeaux)H-Index: 15
Last. Martin E.R. Shanahan (University of Bordeaux)H-Index: 20
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Slow crack propagation in adhesive bonded joints has been characterised using an asymmetric wedge test. Crack position was evaluated from strain gauge measurements, both in the debonded part of the joint and in the bonded zone. Test temperature was changed during loading, giving insight into bond evolution. The technique allows accurate, and virtually continuous, determination of crack position to be made, and therefore the evaluation of crack speed versus fracture energy curves, as well as elas...
15 CitationsSource
#1Mahmood M. Shokrieh (IUST: Iran University of Science and Technology)H-Index: 53
#2M. Heidari-Rarani (IUST: Iran University of Science and Technology)H-Index: 16
Last. Majid R. Ayatollahi (IUST: Iran University of Science and Technology)H-Index: 65
view all 3 authors...
Abstract In this research, a Timoshenko beam (TB) resting on two-parametric (or Pasternak) elastic foundation (PEF) is developed for determination of strain energy release rate (SERR) of mode-I delamination in multidirectional double cantilever beam (DCB) specimens. Based upon the compliance approach, a closed-form solution is obtained for SERR versus delamination length, applied load, effective mechanical properties, and geometrical dimensions of DCB specimen. The required effective flexural mo...
29 CitationsSource
#1Aleksandar Karac (UCD: University College Dublin)H-Index: 12
#2Bamber R.K. Blackman (Imperial College London)H-Index: 31
Last. Alojz Ivankovic (UCD: University College Dublin)H-Index: 23
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Abstract Tapered-double cantilever-beam joints were manufactured from aluminium-alloy substrates bonded together using a single-part, rubber-toughened, epoxy adhesive. The mode I fracture behaviour of the joints was investigated as a function of loading rate by conducting a series of tests at crosshead speeds ranging from 3.33 × 10−6 m/s to 13.5 m/s. Unstable (i.e. stick–slip crack) growth behaviour was observed at test rates between 0.1 m/s and 6 m/s, whilst stable crack growth occurred at both...
64 CitationsSource
#1Mahmood M. Shokrieh (IUST: Iran University of Science and Technology)H-Index: 53
#2M. Heidari-RaraniH-Index: 16
The aim of this research is a comprehensive review and evaluation of beam theories resting on elastic foundations that used to model mode-I delamination in multidirectional laminated composite by DCB specimen. A compliance based approach is used to calculate critical strain energy release rate (SERR). Two well-known beam theories, i.e. Euler-Bernoulli (EB) and Timoshenko beams (TB), on Winkler and Pasternak elastic foundations (WEF and PEF) are considered. In each case, a closed-form solution is...
12 CitationsSource
Static and dynamic fracture is analyzed in a DCB specimen considering shear deformation effects. The DCB specimen is assumed to consist of two Timoshenko beams bonded together along a common edge except at the crack surfaces and is subjected to two splitting forces. Because of symmetry, only one half of the model is considered. So, the physical model of the problem consists of a Timoshenko beam lying on an elastic Winkler foundation. The problem is solved analytically and the stress intensity fa...
15 CitationsSource
Cited By1
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#1Ruodi Jia (University of Toulouse)
#2Libin Zhao (Beihang University)H-Index: 21
Last. Xiaojing Gong (University of Toulouse)H-Index: 1
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Abstract Strain energy release rate (SERR) along a linear crack front of a multidirectional composite DCB specimen shows an obviously non-uniform distribution, which causes the fracture toughness GIavg measured by experiments smaller than the real GIC, and so leading to a lower estimation of fracture toughness. In this study, based on the numerical model a novel semi-empirical closed-form formula was proposed for determination of pure mode I fracture toughness of a multidirectional composite DCB...
Source
#1N. Insausti (UPV/EHU: University of the Basque Country)H-Index: 2
#2I. Adarraga (UPV/EHU: University of the Basque Country)H-Index: 4
Last. Faustino Mujika (UPV/EHU: University of the Basque Country)H-Index: 15
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Abstract Numerical analysis of the analytic model of an experimental procedure to determine the crack length, the compliance and the energy release rate has been developed. As a first step, bending tests at different spans have been numerically simulated with the purpose of obtaining the flexural and out-of-plane shear moduli of the material. Then the crack length has been determined from the numerical compliance, considering the material properties previously obtained. The critical energy relea...
1 CitationsSource