Journal ArticleDOI
Strain-Energy Release Rate Analysis of Plates with Postbuckled Delaminations
TLDR
In this paper, the authors present the derivation of the new virtual crack closure technique, evaluate the accuracy of the technique, and finally present the results of a limited parametric study of laminates with a postbuckled delamination.Abstract:Â
The objectives are to present the derivation of the new virtual crack closure technique, evaluate the accuracy of the technique, and finally to present the results of a limited parametric study of laminates with a postbuckled delamination. Although the new virtual crack closure technique is general, only homogeneous, isotropic laminates were analyzed. This was to eliminate the variation of flexural stiffness with orientation, which occurs even for quasi-isotropic laminates. This made it easier to identify the effect of geometrical parameters on G. The new virtual crack closure technique is derived. Then the specimen configurations are described. Next, the stress analyses is discussed. Finally, the virtual crack closure technique is evaluated and then used to calculate the distribution of G along the delamination front of several laminates with a postbuckled delamination.read more
Citations
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Journal ArticleDOI
Virtual crack closure technique: History, approach, and applications
TL;DR: An overview of the virtual crack closure technique is presented, the approach used is discussed, the history summarized, and insight into its applications provided.
Journal ArticleDOI
Damage mechanism characterization in composite damage tolerance investigations
Derek Hull,Yi Bing Shi +1 more
TL;DR: In this article, a review of the area of damage tolerance of composite materials is presented, which critically exposes the need to identify basic damage mechanisms in order to develop more damage-tolerant materials and structures.
Journal ArticleDOI
Finite element analysis of free vibration of delaminated composite plates
F. Ju,Heow Pueh Lee,K.H. Lee +2 more
TL;DR: In this article, a finite element formulation for the analysis of the free vibration of composite plates with multiple delaminations is presented, which can be easily used to compute the natural frequencies and mode shapes of delaminated plates with arbitrary boundary conditions.
Journal ArticleDOI
An interface element formulation for the simulation of delamination with buckling
TL;DR: In this article, a simple corotational formulation applied to one-dimensional interface elements which embed a fracturing procedure for mixed-mode delaminations is described, which can be applied to situations involving a combination of buckling and delamination.
Journal ArticleDOI
Modeling delamination growth in laminated composites
F. Shen,K.H. Lee,Tong Earn Tay +2 more
TL;DR: In this paper, a study using virtual crack closure technique is made for three-dimensional finite-element models of circular delaminations embedded in woven and non-woven composite laminates.
References
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Journal ArticleDOI
Analysis of Stresses and Strains Near the End of a Crack Traversing a Plate
Journal ArticleDOI
One dimensional modelling of failure in laminated plates by delamination buckling
TL;DR: In this paper, a first attempt by a delaminating beam-column was modeled by a fracture mechanics-based energy release rate criterion, where the local delamination growth, stability, and arrest were governed by the fracture mechanics.
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Two-Dimensional Modelling of Compressive Failure in Delaminated Laminates
Herzl Chai,C. D. Babcock +1 more
TL;DR: In this article, an analytical model is developed to assess the compressive strength criticality of near-surface interlaminar defects in laminated composites, where the growth conditions and growth behavior of this defect are studied by breaking the overall problem into an elastic stability problem and a fracture problem.
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