Buckling of cross-ply composite plates with linearly varying In-plane loads

Aydoğdu, Metin; Aksencer, Tolga

doi:10.1016/j.compstruct.2017.02.085

Cited by 21 publications

(4 citation statements)

References 25 publications

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“…Most research focuses on the analysis of stress distribution around holes of different shapes in rectangular plates subjected to uniaxial, biaxial, and shear loadings. Few issues with plates buckling Loads subjected to linearly varying in-plane loads are available in the literature (Komur et al,2008], (Kadkhodayan et al,2014), (Aydogdu et al,2018), (Kumar et al,2015. Kawadkar (Kawadkar et al,2012) presented an elastic solution for a large rectangular plate with a circular hole in the centre and subjected to linearly varying in-plane stresses at two opposing edges.…”

Section: Introductionmentioning

confidence: 99%

Theoretical and simulation of central elliptical hole with rectangular plate

Sivaramakrishnaiah,

Reddy,

Raghava

et al. 2024

J. emerg. sci. eng.

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A study on design engineering components with slot, notches is very important, because there is a stress increases/failure region area, where the force/stress is concentrating more and more. The elastic stress concentration mainly depends on the mode of loading, materials, and geometry of the design engineering components. The design engineers, academicians, and researchers concentrated and focused on fail-safe design and safe life design. A Plate is considered with different slots, such as circular and elliptical. The main objective of this study is to find out the stress concentration factor in plates with various cutout shapes. This concept is used in design components/structures, for finding the elastic stress concentration. The methods compared are tabulated with their findings. Singularities of the circular hole and elliptical hole in rectangular plates are considered in the present study. The finite Element Method (FEM) was used for fine mesh and ANSYS WORKBENCH software was used for extracting the results and results were validated by analytical or experimental methods.

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Section: Introductionmentioning

confidence: 99%

Theoretical and simulation of central elliptical hole with rectangular plate

Sivaramakrishnaiah,

Reddy,

Raghava

et al. 2024

J. emerg. sci. eng.

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“…The value of the critical load can be increased 15% with varying the helical angle. Aydogdu and Aksencer [39], studied the buckling of composite plates considering the linear variation in planeloads and different plate theories. Likewise, Han et al [40], studied the buckling and post-buckling behavior of composite cylindrical shells under external pressure.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Sandwich Composite Deep Submarine Pressure Hull Considering Failure Criteria

Helal

Huang

Wang

et al. 2019

JMSE

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The pressure hull is the primary element of submarine, which withstands diving pressure and provides essential capacity for electronic systems and buoyancy. This study presents a numerical analysis and design optimization of sandwich composite deep submarine pressure hull using finite element modeling technique. This study aims to minimize buoyancy factor and maximize deck area and buckling strength factors. The collapse depth is taken as a base in the pressure hull design. The pressure hull has been analyzed using two composite materials, T700/Epoxy and B(4)5505/Epoxy, to form the upper and lower faces of the sandwich composite deep submarine pressure hull. The laminated control surface is optimized for the first ply failure index (FI) considering both Tsai–Wu and maximum stress failure criteria. The results obtained emphasize an important fact that the presence of core layer in sandwich composite pressure hull is not always more efficient. The use of sandwich in the design of composite deep submarine pressure hull at extreme depths is not a safe option. Additionally, the core thickness plays a minor role in the design of composite deep submarine pressure hull. The outcome of an optimization at extreme depths illustrates that the upper and lower faces become thicker and the core thickness becomes thinner. However, at shallow-to-moderate depths, it is recommended to use sandwich composite with a thick core to resist the shell buckling of composite submarine pressure hull.

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“…The results illustrated that, there is a reduction in the overall collapse and the yield pressures with values 20% and 40%, respectively. Metin and Tolga [9], studied the buckling of the composite plates considering the linearly varying in plane loads and different plate theories. Zhang et al [10], investigated the eggshaped pressure hulls to improve the poor hydrodynamics of the spherical pressure hull, the low buckling resistance and the difficult interior arrangement.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Modelling and Multi-Objective Optimization of Composite Submarine Pressure Hull Subjected to Hydrostatic Pressure

Fathallah

2019

MSF

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Excellent mechanical behavior and low density of composite materials make them candidates to replace metals for many underwater applications. This paper presents a comprehensive study about the multi-objective optimization of composite pressure hull subjected to hydrostatic pressure to minimize the weight of the pressure hull and maximize the buckling load capacity according to the design requirements. Two models were constructed, one model constructed from Carbon/Epoxy composite (USN-150), the other model is metallic pressure hull constructed from HY100. The analysis and the optimization process were completely performed using ANSYS Parametric Design Language (APDL). Tsai-Wu failure criterion was incorporated in the optimization process. The results obtained emphasize that, the submarine constructed from Carbon/Epoxy composite (USN-150) is better than the submarine constructed from HY100. Finally, an optimized model with an optimum pattern of fiber orientations was presented. Hopefully, the results may provide a valuable insight for the future of designing composite underwater vehicles.

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Buckling of cross-ply composite plates with linearly varying In-plane loads

Cited by 21 publications

References 25 publications

Theoretical and simulation of central elliptical hole with rectangular plate

Theoretical and simulation of central elliptical hole with rectangular plate

Numerical Analysis of Sandwich Composite Deep Submarine Pressure Hull Considering Failure Criteria

Finite Element Modelling and Multi-Objective Optimization of Composite Submarine Pressure Hull Subjected to Hydrostatic Pressure

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