Rights statement: This is the author’s version of a work that was accepted for publication in Composites Part B: Engineering. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Composites Part B: Engineering, 190, 2020 DOI: 10.1016/j.compositesb.2020.107951
Accepted author manuscript, 2.91 MB, PDF document
Available under license: CC BY-NC-ND
Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Experimental study and DEM modelling of bolted composite lap joints subjected to tension
AU - Yu, M.
AU - Yang, B.
AU - Chi, Y.
AU - Xie, J.
AU - Ye, J.
N1 - This is the author’s version of a work that was accepted for publication in Composites Part B: Engineering. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Composites Part B: Engineering, 190, 2020 DOI: 10.1016/j.compositesb.2020.107951
PY - 2020/6/1
Y1 - 2020/6/1
N2 - This paper presents a numerical approach using the discrete element method to predict strength and damage propagation of plates and bolted lap joints subjected to axial tension. Tensile tests on GFRP plates and bolted joints are carried to obtained their overall stiffness and strength. A new three-dimensional discrete element model constructed by a 19-ball assembly is proposed and the relationships between the macro and the micro mechanical properties of FRP is established through calibrations using the test results. The calibrated DEM model is then used to reproduce the test results. Excellent agreements are achieved between the numerical and the experimental results in terms of not only the overall failure loads, but also the detailed failure modes, including cracking and delamination. The research shows great potential of the DEM model in predicting strength of composite materials and presenting detailed local damage and damage propagation at micro-scale, which represents a significant advantage over the conventional numerical methods, such as the finite element method. © 2020 Elsevier Ltd
AB - This paper presents a numerical approach using the discrete element method to predict strength and damage propagation of plates and bolted lap joints subjected to axial tension. Tensile tests on GFRP plates and bolted joints are carried to obtained their overall stiffness and strength. A new three-dimensional discrete element model constructed by a 19-ball assembly is proposed and the relationships between the macro and the micro mechanical properties of FRP is established through calibrations using the test results. The calibrated DEM model is then used to reproduce the test results. Excellent agreements are achieved between the numerical and the experimental results in terms of not only the overall failure loads, but also the detailed failure modes, including cracking and delamination. The research shows great potential of the DEM model in predicting strength of composite materials and presenting detailed local damage and damage propagation at micro-scale, which represents a significant advantage over the conventional numerical methods, such as the finite element method. © 2020 Elsevier Ltd
KW - Bolted joint
KW - Discrete element method
KW - Fiber reinforced polymer
KW - Strength calibration
KW - Bolted joints
KW - Bolts
KW - Fiber reinforced plastics
KW - Fibers
KW - Finite difference method
KW - Numerical methods
KW - Tensile testing
KW - Axial tensions
KW - Damage propagation
KW - Discrete element modeling
KW - Fiber reinforced polymers
KW - Micromechanical property
KW - Numerical approaches
KW - Overall failure
KW - Overall stiffness
KW - Tensile strength
U2 - 10.1016/j.compositesb.2020.107951
DO - 10.1016/j.compositesb.2020.107951
M3 - Journal article
VL - 190
JO - Composites Part B: Engineering
JF - Composites Part B: Engineering
SN - 1359-8368
M1 - 107951
ER -