A new methodology for buckling, postbuckling and delamination growth behavior of composite laminates with delamination

Shabanijafroudi, Nima; Ganesan, Rajamohan

doi:10.1016/j.compstruct.2021.113951

Cited by 9 publications

(4 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This defect can be related to manufacturing fault [2][3][4], free edge effect [5,6], or impact by a foreign object [7][8][9][10] affecting the mechanical response of the composite component. The possibility of the uncontrolled growth of existing delamination is an important problem frequently addressed in the literature [11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

“…The fracture Mode II (shearing) appears when SERR rises due to a global buckling. The combination of Mode I (opening) and Mode II occurs in local or mixed buckling mode shapes [16]. The Strain Energy Release Rate has been calculated by several authors (see for instance Chai et al [39], Bruo et al [40], K¨ollner et al [41]).…”

Section: Introductionmentioning

confidence: 99%

“…However, most formulations for predicting the post-buckling behavior of delaminated composite plates are based on the Crack Extension Techniques (CET) for calculating SERR. The CET determines the total SERR as the difference between the strain energies of the plate before and after an infinitesimal advancement of the crack front per unit surface area of the newly cracked region [16] and it has been implemented in one dimensional and two-dimensional analyses for Finite Element Method (FEM) allows developing more complex techniques as the Virtual Crack Closure Technique (VCCT) [47,48] and Cohesive Zone Models (CZMs) [49,50] for modeling the progressive growth of delamination. VCCT involves the assumption that energy released during the crack growth is equal to the energy required for closing it.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Modeling the delamination failure under compressive loads in CFRP laminates based on digital image correlation analysis

Calvo

Feito

Miguélez

et al. 2022

Composite Structures

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modeling the delamination failure under compressive loads in CFRP laminates based on digital image correlation analysis

Calvo

Feito

Miguélez

et al. 2022

Composite Structures

View full text Add to dashboard Cite

“…This functional is similar to the total potential energy and can take into account full mechanical coupling of the layers cut in steps. The method for predicting the stress-strain behaviour of composite plates weakened by damage is described in [32]. The method is based on the new pattern for dividing the laminate package, which provides better consistency of displacement near the stepped variation of thickness of the structure in the damage zone.…”

Section: Introductionmentioning

confidence: 99%

Stress–Strain Behaviour of Reparable Composite Panel with Step-Variable Thickness

et al. 2021

View full text Add to dashboard Cite

There is an urgent problem of finding an economically viable method of maintenance and restoration of the bearing capacity of structures of various applications. Repair of structures with patches made of polymeric composite materials is one of the most promising repair technologies. However, an improper choice of parameters of the composite patch leads to unjustified increase in the structure mass and the cost of its further operation. These situations result from the lack of reliable methods for developing the repair process, which take into account the influence of the patch geometry and conditions for performance of repair works on the bearing capacity of the repaired structure. The mathematical model of the reparable composite shell–type panel taking into account inhomogeneity of transverse shear deformations at stepped variation of its thickness has been developed. In contrast to the classical theory of layered shells, the model allows simplifying a three-dimensional problem by setting of the displacement field on the layers’ interfaces and their linear interpolation over thickness of the panel, as well as considering the transverse shear deformations resulting from the strength, temperature, or shrinkage loading. According to results, the maximum rise in stresses in the case of a notched panel occurs in the weakened layer, and it is from this layer the failure of the structure will start. In the event of the patch, the panel surface opposite the reinforcement is the most loaded (i.e., susceptible to failure) surface. To confirm the reliability of the developed model, we compared the analytical calculations with the results of experimental and numerical studies of the deformed state of a panel of step–variable thickness by the method of holographic interferometry and modelling by the finite element method. Displacement fields available from experiments correspond to the predicted theoretical results. The resulting maximum error does not exceed 7%. The data obtained during numerical modelling allowed us to conclude that the accuracy of theoretical calculations is sufficient for engineering practice. Results of the work can be used to solve the practical problems such as determination of stress–strain behaviour of a damaged structure or structure after repair, specification of the permissible delamination dimensions, and defining of parameters of the bonded repair process.

show abstract

Study of Reduction of Strength of Composite Plates with Delamination

Kondratiev¹,

Smovziuk²,

Shevtsova³

et al. 2022

Lecture Notes in Mechanical Engineering

View full text Add to dashboard Cite

A new methodology for buckling, postbuckling and delamination growth behavior of composite laminates with delamination

Cited by 9 publications

References 44 publications

Modeling the delamination failure under compressive loads in CFRP laminates based on digital image correlation analysis

Modeling the delamination failure under compressive loads in CFRP laminates based on digital image correlation analysis

Stress–Strain Behaviour of Reparable Composite Panel with Step-Variable Thickness

Study of Reduction of Strength of Composite Plates with Delamination

Contact Info

Product

Resources

About