An accurate stress analysis model for angle-ply laminates with weakly bonded layers

Shu, Xiaoping; Soldatos, Kostas P.

doi:10.1007/bf01181809

Cited by 16 publications

(5 citation statements)

References 21 publications

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“…This yields the macro-scale displacement field and homogenized equilibrium equations which depend on the global variables only. Using this second approach care must be put on properly accounting for the strain energy absorbed during deformation within the interface [15] in the variational equations used for the derivation of the equations of motion. This term was neglected in the early models in [11][12][13] and corrected only later in [14].…”

Section: Introductionmentioning

confidence: 99%

Local zigzag effects and brittle delamination fracture of n-layered beams using a structural theory with three displacement variables

Massabò

Monetto

2019

Frattura Ed Integrità Strutturale

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Equivalent single layer theories for layered beams effectively and accurately predict global displacements and internal force and moment resultants using a limited number of displacement variables. However, they cannot reproduce local effects due to material architecture or weak/imperfect bonding of the layers, such as zigzag displacement fields, displacement jumps at the layer interfaces and complex transverse stress fields, nor can they simulate delamination damage growth. In this work we will present some applications and discuss advantages and limitations of a recently formulated zigzag model. The model, through a modification of the equilibrium equations of an equivalent single layer theory, which maintains the same number of variables, reproduces local effects and delamination fracture under mode II dominant conditions. The approach is based on a local enrichment of the displacement field of first order shear deformation theory, the introduction of cohesive interfaces and homogenization.

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Section: Introductionmentioning

confidence: 99%

Local zigzag effects and brittle delamination fracture of n-layered beams using a structural theory with three displacement variables

Massabò

Monetto

2019

Frattura Ed Integrità Strutturale

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“…Shu and Soldatos 4 used a shear slip model for analysis of angle-ply composite laminated plate with weakly bonded layers. Librescu and Schmidt 5 assumed linear relations between the interface tractions in the normal and tangential directions, and the respective interfacial sliding to investigate laminated anisotropic shells of arbitrary shape and curvature.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional static and free vibration analysis of laminated cylindrical panel with viscoelastic interfaces

Alibeigloo

2014

Journal of Composite Materials

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In this paper, three-dimensional theory of elasticity is employed to investigate bending and free vibration behavior of simply supported cylindrical panel with special emphasis on incorporating viscoelastic interfacial imperfection. Analysis is carried out by using Fourier series along the axial and circumferential directions and state space technique along the radial direction. Time-dependent behavior is investigated by solving first-order differential equation of sliding displacement at the viscoelastic interfaces. Numerical results depict good agreement between the present numerical results and the available published results. In addition, the effects of solid, elastic and viscous interfaces, time, aspect ratio and mid radius to thickness ratio on the bending and vibration behavior of laminated cylindrical panel are discussed.

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“…Toledano and Murakami [ 23 ] considered the shear slip in a two-layer cross-ply composite laminate (length-to-thickness ratio, S = 6) through the inclusion of both linear and nonlinear interface slip laws, which had been proven to be valid in analyzing the beam with an interlayer slip [ 24 ]. The bending response of a laminate with the same stacking sequence had been examined by Lu and Liu [ 25 ] using the Interlayer Shear Slip Theory (ISST) and others [ 26 – 29 ] using the linear spring-layer model, in which the mid-plane deflection under a variety of shear slip coefficients as well as through-thickness mid-point deflection was addressed. da Silva and Sousa [ 30 ] presented a family of interface elements employing the Euler-Bernoulli and Timoshenko beam theories for the analysis of composite beams with an interlayer slip, from which the former was claimed preferable for simplicity, whereas the latter had been shown to produce the most accurate structural responses, free of spurious slip strain distribution and shear locking even when high connection stiffness was considered.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Modeling of Laminated Composite Plates with Locally Delaminated Interface Subjected to Impact Loading

Sabah

Kueh

2014

The Scientific World Journal

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This paper investigates the effects of localized interface progressive delamination on the behavior of two-layer laminated composite plates when subjected to low velocity impact loading for various fiber orientations. By means of finite element approach, the laminae stiffnesses are constructed independently from their interface, where a well-defined virtually zero-thickness interface element is discreetly adopted for delamination simulation. The present model has the advantage of simulating a localized interfacial condition at arbitrary locations, for various degeneration areas and intensities, under the influence of numerous boundary conditions since the interfacial description is expressed discretely. In comparison, the model shows good agreement with existing results from the literature when modeled in a perfectly bonded state. It is found that as the local delamination area increases, so does the magnitude of the maximum displacement history. Also, as top and bottom fiber orientations deviation increases, both central deflection and energy absorption increase although the relative maximum displacement correspondingly decreases when in contrast to the laminates perfectly bonded state.

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An accurate stress analysis model for angle-ply laminates with weakly bonded layers

Cited by 16 publications

References 21 publications

Local zigzag effects and brittle delamination fracture of n-layered beams using a structural theory with three displacement variables

Local zigzag effects and brittle delamination fracture of n-layered beams using a structural theory with three displacement variables

Three-dimensional static and free vibration analysis of laminated cylindrical panel with viscoelastic interfaces

Finite Element Modeling of Laminated Composite Plates with Locally Delaminated Interface Subjected to Impact Loading

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