Buckling
Mostrando 37-48 de 198 artigos, teses e dissertações.
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37. Size-Dependent Bending, Buckling and Free Vibration Analyses of Microscale Functionally Graded Mindlin Plates Based on the Strain Gradient Elasticity Theory
Abstract In this paper, a size-dependent microscale plate model is developed to describe the bending, buckling and free vibration behaviors of microplates made of functionally graded materials (FGMs). The size effects are captured based on the modified strain gradient theory (MSGT), and the formulation of the paper is on the basis of Mindlin plate theory. Th
Lat. Am. j. solids struct.. Publicado em: 2016-04
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38. Effect of Thermal Residual Stresses on Buckling and Post-Buckling Properties of Laminated Composites Perimetrally Reinforced
Abstract Several mechanical properties can be affected by the occurrence of residual stresses due to curing, and their effects are more pronounced in laminated composites. The effect of the thermal residual stresses on the buckling and post-buckling properties of perimetrally reinforced laminated composites is experimentally characterized. Carbon/epoxy lamin
Lat. Am. j. solids struct.. Publicado em: 2016-03
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39. Vibration and Buckling Analysis of Functionally Graded Plates Using New Eight-Unknown Higher Order Shear Deformation Theory
Abstract In this paper a new eight-unknown higher order shear deformation theory is proposed to study the buckling and free vibration of functionally graded (FG) material plates. The theory bases on full twelve-unknown higher order shear deformation theory, simultaneously satisfies zero transverse shear stress at the top and bottom surfaces of FG plates. Equ
Lat. Am. j. solids struct.. Publicado em: 2016-03
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40. Bending, Vibration and Buckling of Laminated Composite Plates Using a Simple Four Variable Plate Theory
Abstract In the present study, a simple trigonometric shear deformation theory is applied for the bending, buckling and free vibration of cross-ply laminated composite plates. The theory involves four unknown variables which are five in first order shear deformation theory or any other higher order theories. The in-plane displacement field uses sinusoidal fu
Lat. Am. j. solids struct.. Publicado em: 2016-03
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41. Peripheral Deformation and Buckling of Stainless Steel Hemispherical Shells Compressed by a Flat Plate
Abstract An experimental investigation was performed on stainless steel hemispherical shells under axial compression. Eight kinds of shells with radius-to-thickness ratios that range from 57.1 to 125 were designed and manufactured for this study. The shells were compressed to more than 50% of their radii by a solid flat plate. To avoid contact between the ba
Lat. Am. j. solids struct.. Publicado em: 2016-02
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42. Free Vibration of Laminated Composite Plate with Shape Memory Alloy Fibers
Abstract In the present study, an analytical closed form solution for free vibration response of hybrid composite plate reinforced with shape memory alloy (SMA) fibers is derived. Recovery stresses generated during martensitic phase transformation are obtained based on one- dimensional Brinson's model. The mechanical properties of plate are assumed to be tem
Lat. Am. j. solids struct.. Publicado em: 2016-02
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43. Buckling and Vibration of Functionally Graded Non-uniform Circular Plates Resting on Winkler Foundation
Abstract An investigation on the effect of uniform tensile in-plane force on the radially symmetric vibratory characteristics of functionally graded circular plates of linearly varying thickness along radial direction and resting on a Winkler foundation has been carried out on the basis of classical plate theory. The non-homogeneous mechanical properties of
Lat. Am. j. solids struct.. Publicado em: 2015-12
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44. Damage Mechanisms in AISI 304 Borided Steel: Scratch and Daimler-Benz Adhesion Tests
In this study, damage mechanisms in the FeB/Fe2B coatings formed on the surface of AISI 304 steel are determined by adhesion tests. First, the boriding of the AISI 304 steel was carried out through the powder-pack method at 1223 K in the range from 2-10 h of exposure time. After treatment, Berkovich depth-sensing indentation test were conducted; the result s
Mat. Res.. Publicado em: 24/11/2015
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45. An efficient analytical model to evaluate the first two local buckling modes of finite cracked plate under tension
Abstract The analytical approach is presented for both symmetric and anti-symmetric local buckling of the thin-plate in finite sizes and with a center crack under tension. An efficient classical solution based on the principle of minimum total potential energy was provided using only 2 and 1 degrees of freedom for symmetric and anti-symmetric modes and the l
Lat. Am. j. solids struct.. Publicado em: 2015-11
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46. Fire response of a 3D multi-storey building with buckling restrained braces
Abstract This paper investigates the performance of a three-dimensional multi-storey structure with Buckling Restrained Brace system (BRBs) under fire condition, using a sequentially coupled nonlinear thermal stress analysis. Efficiency of using BRBs in enhancing the strength and stiffness of a structural frame is compared with that of Ordinary Concentricall
Lat. Am. j. solids struct.. Publicado em: 2015-11
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47. DQ thermal buckling analysis of embedded curved carbon nanotubes based on nonlocal elasticity theory
Abstract To investigate the thermal buckling of curved carbon nanotubes (CCNTs) embedded in an elastic medium, nonlocal elasticity theory is employed in combination with the theory of thin curved beams. Differential quadrature (DQ) method is implemented to discretize the resulted governing equations. Solving these equations enables us to estimate the critica
Lat. Am. j. solids struct.. Publicado em: 2015-10
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48. Effect of Surface Stress on the Buckling of Nonlocal Nanoplates Subject to Material Uncertainty
Abstract At the nano scale, the effect of surface stress becomes prominent as well as the so-called small scale effect. Furthermore due to difficulties in making accurate measurements at nano-scale as well as due to due to molecular defects and manufacturing tolerances, there exists a certain degree of uncertainty in the determination of the material propert
Lat. Am. j. solids struct.. Publicado em: 2015-09