Flexural behavior of general laminated composite and sandwich plates using a secant function based shear deformation theory

Grover, Neeraj; Maiti, Dipak Kumar; Singh, B.N.

doi:10.1590/s1679-78252014000700011

Cited by 23 publications

(11 citation statements)

References 75 publications

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“…As seen in this table, the transverse shear stress magnitude was negligible in the 0° layers. Based on the exact linear elasticity analysis, 52 shear deformation theory, 53 and FE modeling, 54 it was proved that the transverse shear stress is maximum at the 90° layers of a simply-supported cross-ply composite plate with a layup of [0/90] s under bending loading.…”

Section: The Slwp Methodsmentioning

confidence: 99%

Simulated Lamb wave propagation method for nondestructive monitoring of matrix cracking in laminated composites

Mardanshahi

Shokrieh

Kazemirad

2021

Structural Health Monitoring

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The estimation of the damping coefficient may help to improve the damage detection in composite materials. The purpose of this study was to develop the simulated Lamb wave propagation method for nondestructive monitoring of matrix cracking in laminated composites via the accurate estimation of their damping coefficient. Cross-ply composite specimens with different crack densities were fabricated and tested by the Lamb wave propagation technique. The phase velocity of the Lamb wave and the damping coefficient of the specimens were measured. The finite element models were developed at micro-scale (representative volume elements) and macro-scale (laminated specimens) levels to simulate the Lamb wave propagation in composite specimens. An optimization process was performed through the model updating procedure to achieve finite element models that were in good agreement with experiments. The phase velocity and damping coefficient, obtained from the updated FE models for two crack densities other than those used in the model updating procedure, were successfully examined by experimental results. It was also revealed that the damping coefficient and the rate of increase in the damping coefficient in terms of the crack density were higher for the composite laminates with a higher number of 90° layers. The damping of the fiber–matrix interphase and crack regions were considered in the model and shown as a significant contribution to the overall damping of the composite specimens. The proposed simulated Lamb wave propagation method can be used as a virtual lab for in-situ monitoring of laminated composites with different material properties, stacking sequences, and crack densities.

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Section: The Slwp Methodsmentioning

confidence: 99%

Simulated Lamb wave propagation method for nondestructive monitoring of matrix cracking in laminated composites

Mardanshahi

Shokrieh

Kazemirad

2021

Structural Health Monitoring

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“…Equation (8) can be solved by using the analytical and numerical methods. In order to obtain analytical solutions, assumed solution forms and boundary conditions are adopted in accordance to Navier's methods applied in [24][25][26]. Procedure for obtaining the results by combining the symbolic and numerical coefficient values, which occur in these kinds of problems, is implemented.…”

Section: Displacement Field and Constitutive Equationsmentioning

confidence: 99%

Comparative thermal buckling analysis of functionally graded plate

et al. 2017

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A thermal buckling analysis of functionally graded thick rectangular plates according to von Karman non-linear theory is presented. The material properties of the functionally graded plate, except for the Poisson's ratio, were assumed to be graded in the thickness direction, according to a power-law distribution, in terms of the volume fractions of the metal and ceramic constituents. Formulations of equilibrium and stability equations are derived using the high order shear deformation theory based on different types of shape functions. Analytical method for determination of the critical buckling temperature for uniform increase of temperature, linear and non-linear change of temperature across thickness of a plate is developed. Numerical results were obtained in МATLAB software using combinations of symbolic and numeric values. The paper presents comparative results of critical buckling temperature for different types of shape functions. The accuracy of the formulation presented is verified by comparing to results available from the literature.

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“…In [40][41][42] the authors have proposed a shear deformation theory of n-series, which was obtained by modifying the displacement field of TSDT, in order to explain polynomial elements of n-series. Unlike HSDT based on polynomial shape functions, some authors have dealt with researching and introducing different hyperbolic, exponential, parabolic, and other shape functions [43][44][45][46][47][48][49][50][51]. Proposed functions were applied in the analysis of conventional laminate composites with the aim to describe the behavior of moderately thick and thick under different static and dynamic loads.…”

Section: Introductionmentioning

confidence: 99%