A Finite Element Analysis of Delamination Propagation in Composite Laminates.

Majima, Osamu; Suemasu, Hiroshi

doi:10.6089/jscm.25.140

Cited by 3 publications

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“…On the other hand, it has been indicated that the behavior of delamination propagation is little influenced by the modeling if the fracture mechanics condition is satisfied [15,18,19].…”

Section: Introductionmentioning

confidence: 97%

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An interface element with continuous traction to analyze delamination propagation

Majima¹,

Suemasu²

2005

Advanced Composite Materials

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An interface element which accounts for the properties of both material strength and fracture mechanics is proposed to numerically simulate the damage propagation process in composite laminates. Several element refinements, which ensure the smooth convergence of the solution during the calculation of damage, are incorporated through a user subroutine in the commercially available finite element package program (MARC). The element was successfully applied to the fundamental problems of stable crack propagation and crack initiation. The propagation process of multiple interlaminar delaminations in circular axisymmetric nonlinear plates subjected to a quasistatic transverse load has been solved to demonstrate the applicability and efficiency of the present element in a complex delamination propagation problem. Because a continuous stress distribution with respect to surface separation along the crack path is assumed on the interface, smooth and stable convergence of the solution of crack propagation can be realized with a fairly coarse mesh compared to the mesh of the model when a discrete interface traction force is assumed only at the nodes on the interface. Since the interface element considers the energy dissipated during the formation of the crack surface, it may be applied to the simulation of a dynamic failure process.

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“…On the other hand, it has been indicated that the behavior of delamination propagation is little influenced by the modeling if the fracture mechanics condition is satisfied [15,18,19].…”

Section: Introductionmentioning

confidence: 97%

“…The authors previously proposed a method that considers such energy by introducing a fracture element using a nonlinear spring, which satisfies the material strength and fracture mechanics conditions in the finite element analysis [18,19]. But, it was necessary to use a very fine finite element mesh to obtain a satisfactory result.…”

Section: Introductionmentioning

confidence: 99%

An interface element with continuous traction to analyze delamination propagation

Majima¹,

Suemasu²

2005

Advanced Composite Materials

Self Cite

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Characterization of tensile damage progress in stitched CFRP laminates

Yoshimura

Yashiro

Okabe

et al. 2007

Advanced Composite Materials

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Evaluation of Fatigue Damage Progress in CFRP Cross-Ply Laminates with an Open Hole Using Cohesive Elements

Yashiro

2011

J. Soc. Mat. Sci., Japan

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This study experimentally and numerically investigate fatigue damage in CFRP cross-ply laminates with an open hole under some test conditions, and verified the numerical simulation for predicting the fatigue damage progress proposed by the authors. Splits in the 0°plies, transverse cracks in the 90°plies and delaminations at 0°/90°ply interfaces were experimentally observed due to the cyclic loading, even if the maximum stress was much lower than the stress to generate the initial damage under the static loading condition. All the cracks gradually extended with increasing number of cycles under the low stress levels. After a damage analysis with cohesive elements was confirmed to represent the damage under static loading condition, the fatigue damage observed near the hole was analyzed by the damage analysis with a fatigue damage law that was applied to the stiffness degradation process of cohesive elements. The predicted fatigue damage progress agreed well with the observations, and this approach accurately represented the difference of the damage state due to the change in the critical energy release rate or in the maximum stress in cyclic loading. These experiments and simulations demonstrated the validity of the numerical approach for predicting the fatigue damage progress in composite laminates, and the parameters in the fatigue law for cohesive elements were discussed.

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A Finite Element Analysis of Delamination Propagation in Composite Laminates.

Cited by 3 publications

References 0 publications

An interface element with continuous traction to analyze delamination propagation

An interface element with continuous traction to analyze delamination propagation

Characterization of tensile damage progress in stitched CFRP laminates

Evaluation of Fatigue Damage Progress in CFRP Cross-Ply Laminates with an Open Hole Using Cohesive Elements

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