Effect of Thickness Variation on the Mechanical Buckling Load in Plates Made of Functionally Graded Materials

Mozafari, Hamid; Ayob, Amran

doi:10.1016/j.protcy.2012.02.108

“…In order to overcome the limitations of FSDT many HSDTs were developed that involve higher order terms in Taylors expansions of the displacements in the thickness coordinate. Javaheri and Eslami [17], Najafizadeh and Heydari [18], Bodaghi and Saidi [19], Bagherizadeh et al [20], and Mozafari and Ayob [21] used the HSDT to analyze the buckling behavior of FG plates. Ma and Wang [22] have investigated the axisymmetric large deflection bending and postbuckling behavior of a functionally graded circular plate under mechanical, thermal, and combined thermal-mechanical load based on classical nonlinear von Karman plate theory.…”

Section: Introductionmentioning

confidence: 99%

Buckling Analysis of Functionally Graded Material Plates Using Higher Order Shear Deformation Theory

Reddy

¹

,

Kumar

²

,

Reddy

³

et al. 2013

Journal of Composites

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The prime aim of the present study is to present analytical formulations and solutions for the buckling analysis of simply supported functionally graded plates (FGPs) using higher order shear deformation theory (HSDT) without enforcing zero transverse shear stresses on the top and bottom surfaces of the plate. It does not require shear correction factors and transverse shear stresses vary parabolically across the thickness. Material properties of the plate are assumed to vary in the thickness direction according to a power law distribution in terms of the volume fractions of the constituents. The equations of motion and boundary conditions are derived using the principle of virtual work. Solutions are obtained for FGPs in closed-form using Navier’s technique. Comparison studies are performed to verify the validity of the present results from which it can be concluded that the proposed theory is accurate and efficient in predicting the buckling behavior of functionally graded plates. The effect of side-to-thickness ratio, aspect ratio, modulus ratio, the volume fraction exponent, and the loading conditions on the critical buckling load of FGPs is also investigated and discussed.

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“…Corrosion problems have been resolved in the consumed mortar. Tile components (Figure 2) are appropriate for pipes with various cross sections such as circular, oval, and square [5]. Ceramic materials are still the first option of concrete restoration in wastewater treatment plants especially for channel and sewer lines, but the main discussion is on how to install them.…”

Section: The Sludge Storage Tanks Using the Fgm Plates Elementmentioning

confidence: 99%

Corrosion Control and Reduction in Sludge Storing Concrete Tanks in Wastewater Treatment Plants using the Metal – Ceramic FGM Plates Element

Abdolvahab¹

2017

MOJCE

0

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Concrete is one of the oldest and most common key materials in the construction and maintenance of wastewater transitional structures, which is considered by the designers and contractors. Corrosive materials in wastewater such as hydrogen sulfide, etc. cause corrosion at the concrete level, which over time leads to reducing their strength and therefore concrete structures mechanism. On the other hand, the increasing advancement of using composites in various industries created the idea of creating a new generation of composite materials known as FGMs for the first time in 1984 in Japan. FGMs are composites, in which the microscopic properties change with the non-uniform, smooth, and steady distribution of its original composition. Therefore, these materials are usually in the category of inhomogeneous materials that are assumed to be isotropic. This paper aims to investigate the application of the structural element of metal -ceramic FGM plates to design the plate elements of the floor, wall, or ceiling in cylindrical and rectangular concrete tanks of wastewater treatment plants sludge storage in order to extend the life of structures against corrosion caused by wastewater instead of concrete tanks. In addition, the previous structural results of the application of metal-ceramic FGM plate s are the consumed elements used in the wall and floor slab on the support or on the substrate is elastic or Pasternak.

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“…For the first time, Bewer & Duwez [5] raised the idea of combining two different phases by changing the arrangement of each of the phases in the layer to improve the mechanical properties of the composites. Their idea was generally related to eliminating the weaknesses of composite materials in many of their application.…”

Section: Definition Of Fgms Materialsmentioning

confidence: 99%

Untitled

2017

MOJCE

0

View full text Add to dashboard Cite

Concrete is one of the oldest and most common key materials in the construction and maintenance of wastewater transitional structures, which is considered by the designers and contractors. Corrosive materials in wastewater such as hydrogen sulfide, etc. cause corrosion at the concrete level, which over time leads to reducing their strength and therefore concrete structures mechanism. On the other hand, the increasing advancement of using composites in various industries created the idea of creating a new generation of composite materials known as FGMs for the first time in 1984 in Japan. FGMs are composites, in which the microscopic properties change with the non-uniform, smooth, and steady distribution of its original composition. Therefore, these materials are usually in the category of inhomogeneous materials that are assumed to be isotropic. This paper aims to investigate the application of the structural element of metal -ceramic FGM plates to design the plate elements of the floor, wall, or ceiling in cylindrical and rectangular concrete tanks of wastewater treatment plants sludge storage in order to extend the life of structures against corrosion caused by wastewater instead of concrete tanks. In addition, the previous structural results of the application of metal-ceramic FGM plate s are the consumed elements used in the wall and floor slab on the support or on the substrate is elastic or Pasternak.

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Effect of Thickness Variation on the Mechanical Buckling Load in Plates Made of Functionally Graded Materials

Cited by 15 publications

References 17 publications

Buckling Analysis of Functionally Graded Material Plates Using Higher Order Shear Deformation Theory

Buckling Analysis of Functionally Graded Material Plates Using Higher Order Shear Deformation Theory

Corrosion Control and Reduction in Sludge Storing Concrete Tanks in Wastewater Treatment Plants using the Metal – Ceramic FGM Plates Element

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