Effect of delamination of axially loaded homogeneous laminated plates

Simitses, George J.; Sallam, S.; Yin, Wang

doi:10.2514/3.9104

Cited by 216 publications

(72 citation statements)

References 4 publications

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“…This calculation is done to see the accuracy and also to know the critical load of a perfect structure that later on will be compared with the delaminated structure. In the single delamination, it can be seen that the results are consistent with the results that obtained by previous researchers, Simitsess [6] and Mulia Minhat [5] . From this results, the longer the delamination, the buckling strength of the composite laminate structure will decrease quadratically.…”

Section: Finite Element Methods Analysissupporting

confidence: 82%

Buckling Analysis of Single and Multi Delamination In Composite Beam Using Finite Element Method

Simanjorang

Syamsudin

Suada

2018

J. Phys.: Conf. Ser.

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Section: Finite Element Methods Analysissupporting

confidence: 82%

Buckling Analysis of Single and Multi Delamination In Composite Beam Using Finite Element Method

Simanjorang

Syamsudin

Suada

2018

J. Phys.: Conf. Ser.

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“…where uI is the gap vector at iteration (k) obtained from the eigenvalue analysis from equation (2). The sensitivity matrix S I can be expressed as…”

Section: Sensitivity Analysismentioning

confidence: 99%

“…The global stiffness matrix K and geometric stiffness matrix K N of the composite laminates can be obtained from the ordinary finite element method as described by Zienkiewicz. Equation (2) can be solved by employing the different kinds of algorithms for eigenvalue problem. Here, the effective algorithm presented by Corr and Jennings is adopted to analyze the eigenvalue problem in equation (2).…”

Section: The Governing Equationsmentioning

confidence: 99%

“…Equation (2) can be solved by employing the different kinds of algorithms for eigenvalue problem. Here, the effective algorithm presented by Corr and Jennings is adopted to analyze the eigenvalue problem in equation (2). …”

Section: The Governing Equationsmentioning

confidence: 99%

“…From equation (2), it can be found that the load and displacements are all unknowns. In this section, a method for solving the contact problem in eigenvalue analysis is presented.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Buckling analysis of delaminated laminates with consideration of contact in buckling mode

1999

Int. J. Numer. Meth. Engng.

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SUMMARYThis paper concerns the buckling load analysis of laminates with a pre-existing delamination, using the finite element method based on the Mindlin plate theory. To deal with the contact problem in the buckling mode, an effective algorithm is presented. In this method, an iterative updating process based on the first-order sensitivity analysis and the quadratic programming technique is proposed to compute the fictitious forces in contacting areas at first. These fictitious forces are then transferred into the stiffness parameters of some artificial springs. The original stiffness matrix of system can be modified, using these artificial springs. Finally, the penetration between two delaminated layers in the buckling mode can be prevented effectively. Numerical examples show that this method is very efficient to solve the contact problem in eigenvalue analysis from the viewpoint of its accuracy, stability and convergence speed. The effects of contact and delamination size on the buckling load analysis are also investigated.

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Modelling of laminates using a layerwise element with enhanced strains

Moorthy

Reddy

1998

Int. J. Numer. Meth. Engng.

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A layerwise finite element with enhanced strains is developed for the analysis of laminates with special emphasis on determination of interlaminar forces and study of delaminations. An interface model using the penalty function method is developed to calculate strain energy release rates. Since the interface model provides the facility for the closure of delamination by a small amount, strain energy release rates were evaluated by actual crack closure and by virtual crack closure methods for a comparative study. Numerical examples of delamination are presented to illustrate the accuracy of the computational approaches developed herein. © 1998 John Wiley & Sons, Ltd.

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Effect of delamination of axially loaded homogeneous laminated plates

Cited by 216 publications

References 4 publications

Buckling Analysis of Single and Multi Delamination In Composite Beam Using Finite Element Method

Buckling Analysis of Single and Multi Delamination In Composite Beam Using Finite Element Method

Buckling analysis of delaminated laminates with consideration of contact in buckling mode

Modelling of laminates using a layerwise element with enhanced strains

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