Stress fields and energy release rates in cross-ply laminates

Schoeppner, G. A.; Pagano, N. J.

doi:10.1016/s0020-7683(97)00107-8

Cited by 73 publications

(30 citation statements)

References 14 publications

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“…Shear-lag analyses and variational models are the most widely used approaches, with the Hashin's variational model [6] being simple and consistent, although rather inaccurate in the case of large or small cracked layer thickness. McCartney and Schoeppner [7,8] have proposed most exact solutions involving complex numerical routines. In most cases the models are restricted to the prediction of some elastic parameters (mainly the longitudinal laminate Young's Modulus, x E ) of a general cross-ply composite system.…”

Section: Introductionmentioning

confidence: 99%

Matrix cracking in polymeric composites laminates: Modelling and experiments

Katerelos

Kashtalyan

Soutis

et al. 2008

Composites Science and Technology

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Section: Introductionmentioning

confidence: 99%

Matrix cracking in polymeric composites laminates: Modelling and experiments

Katerelos

Kashtalyan

Soutis

et al. 2008

Composites Science and Technology

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“…[24]). Furthermore, for tubes having few layers, variational mechanics [1,2] or advanced elasticity [16] methods might be preferred approaches. The motivation for this work, however, was for many concentric cylinders rather than a few and all subsequent examples consider a tree structure.…”

Section: Example Calculationsmentioning

confidence: 99%

“…Advanced elasticity methods have been applied to a similar concentric cylinder problem by Schoeppner and Pagano [16]. Variational and advanced elasticity methods are more accurate, but are cumbersome to extend to many layers as would be required for analysis of all growth rings in a tree [17].…”

Section: Introductionmentioning

confidence: 99%

Polar shear-lag analysis of a composite of concentric cylinders with longitudinal cracks: Application to internal checking in wood

Nairn

2010

Composites Part A: Applied Science and Manufacturing

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Composites of concentric cylinders can fail by microcracks that span the thickness and length of one cylinder but arrest at the boundary to adjacent cylinders. This failure mode was analyzed by developing a new polar shear-lag analysis for stresses in a cross section of a concentric-cylinder composite. The analysis can accurately calculate stresses in each cylinder in the presence of microcracks. These stresses were used to calculate the energy release rate for formation of a new microcrack as a tool for predicting the microcracking process due to any source of applied or residual stresses. The target problem was to model internal checking in certain species of trees. In a tree, the alternating regions of early-and latewood that form the growth rings are the concentric cylinders. Internal checking is microcracking in the earlywood layers. The shear-lag analysis was used to predict the propensity of growth rings to form internal checks.

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“…Most analyses evaluate the energy release rate (ERR). By [1], variational methods were used for evaluation of ERR. The ERR approach was later extended by [2].…”

Section: Introductionmentioning

confidence: 99%

Mixed-Mode Delamination Failure Model of Sandwich Plate

Kormaníková

2015

BFPCS

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-Plane fracture of two plies is defined as delamination that can be found between plies in a laminate or sandwich structure. The interface model is solved using fracture and contact mechanics. Within the standard First-Order Deformation Theory of laminates, the mixed-mode delamination failure model is solved. The damage propagation parameters are calculated using the ANSYS code. The delamination problem is solved in a numerical example.

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Stress fields and energy release rates in cross-ply laminates

Cited by 73 publications

References 14 publications

Matrix cracking in polymeric composites laminates: Modelling and experiments

Matrix cracking in polymeric composites laminates: Modelling and experiments

Polar shear-lag analysis of a composite of concentric cylinders with longitudinal cracks: Application to internal checking in wood

Mixed-Mode Delamination Failure Model of Sandwich Plate

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