Effect of Cutout on the Stability and Failure of Laminated Composite Cylindrical Panels Subjected to In-Plane Pulse Loads Vasanth Keshav, Shuvendu Narayan Patel, Rajesh Kumar, Gaurav Watts International Journal of Structural Stability and Dynamics, 2022 In this investigation, the nonlinear dynamic buckling analysis and the failure analysis of laminated composite cylindrical (LCC) panel with different shapes of cutouts under the action of rectangular in-plane pulse loads are performed in the finite element framework. Cross-ply laminates which are balanced symmetric are considered in the investigation. The first ply failure load (FPFL) of the panel is evaluated and checked whether it occurs before the nonlinear dynamic buckling phenomenon considering Tsai–Wu failure criterion. Convergence and validation studies are undertaken, and the results are compared with those from the existing literature. The effects of loading duration, cutout area and cutout geometry on the panel are investigated in detail and results are reported. The results indicate that for the panel with cutout, its dynamic buckling load (DBL), in certain cases, compared to the static buckling load (SBL), can be lower even if the loading duration is half of its first natural period. Additionally, the vibration and the static buckling analyses of the panels are carried out as and when required.
Non-linear dynamic pulse buckling of laminated composite curved panels V. Keshav, S. N. Patel Structural Engineering and Mechanics, 2020 In this paper, non-linear dynamic buckling behaviour of laminated composite curved panels subjected to dynamic in-plane axial compressive loads is studied using finite element methods. The work is carried out using the finite element software ABAQUS. The curved panels are modelled with S4R element and the nonlinear dynamic equilibrium equations are solved using the ABAQUS/Explicit algorithm. The effect of aspect ratio, radius of curvature and thickness are studied. The importance of orientation of plies in the direction of loading is also reiterated in this study. Vol\\'mir\\'s criterion is used to calculate the dynamic buckling loads. The panels are subjected to rectangular pulse load of various amplitude and durations and the responses are observed. For particular loading amplitude, a critical value of loading duration is observed beyond which the variation of dynamic buckling load is insignificant. It is also observed that, the value of dynamic bucking load reduces as the loading duration is increased though the reduction is not much after a particular loading duration.
Stability and Failure Study of Suddenly Loaded Laminated Composite Cylindrical Panel Vasanth Keshav, Shuvendu Narayan Patel, Rajesh Kumar International Journal of Applied Mechanics, 2019 In this paper, nonlinear dynamic buckling of laminated composite cylindrical panels subjected to in-plane impulsive compressive load is studied along with the failure analysis. Balanced and symmetric angle-ply laminated composite curved panels are considered. Convergence study is performed, and results are validated with the results from the existing literature, and then the dynamic buckling loads are calculated. The failure index of laminated composite curved panel is also calculated to check the precedence of first ply failure load over nonlinear dynamic buckling load. The effect of aspect ratio, loading function, and radius of curvature is studied. The analysis is carried out using finite element method. It is observed that the first ply failure for balanced and symmetric angle-ply laminated composite curved panels occurs after the panel has buckled due to dynamic impulse loads.
Dynamic buckling of laminated composite rectangular plates subjected to uniaxial compression loads Journal of Structural Engineering India, 2018
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MOST CITED SCHOLAR PUBLICATIONS
Effect of cutout on the stability and failure of laminated composite cylindrical panels subjected to in-plane pulse loads V Keshav, SN Patel, R Kumar, G Watts International Journal of Structural Stability and Dynamics 22 (08), 2250087 , 2022 2022 Citations: 13
Non-linear stability and failure of laminated composite stiffened cylindrical panels subjected to in-plane impulse loading V Keshav, SN Patel, R Kumar Structures 29, 360-372 , 2021 2021 Citations: 10
Stability and failure study of suddenly loaded laminated composite cylindrical panel V Keshav, SN Patel, R Kumar International Journal of Applied Mechanics 11 (10), 1950093 , 2019 2019 Citations: 9
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Application of BIM for effective construction safety management in high rise buildings KL Swaroop Devaiah, V Keshav IOP Conference Series: Materials Science and Engineering 1255 (1), 012006 , 2022 2022 Citations: 6
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Non-Linear dynamic pulse buckling of laminated composite curved panels V Keshav, SN Patel Structural Engineering and Mechanics, An Int'l Journal 73 (2), 181-190 , 2020 2020 Citations: 5
Nonlinear dynamic buckling and failure study of laminated composite plates subjected to axial impulse loads V Keshav, SN Patel, R Kumar Advances in Fluid Mechanics and Solid Mechanics: Proceedings of the 63rd … , 2020 2020 Citations: 2
Dynamic buckling of laminated composite curved panels subjected to in-plane compression V Keshav, SN Patel Recent Advances in Structural Engineering, Volume 2: Select Proceedings of … , 2018 2018 Citations: 2
Wind and Seismic Response Analysis of Cable-Stayed Bridge-A Case Study P Gagana, V Keshav, HS Manoj Structural Engineering Innovations for Resilient Infrastructure: Select … , 2026 2026
Effect of Imperfection in Non-linear Static Buckling of Laminated Composite Hexagonal Plate with Incorporation CR Sathwik, V Keshav, MR GouthamRaj Structural Engineering Innovations for Resilient Infrastructure: Select … , 2026 2026
of Laminated Composite Pentagonal MR GouthamRaj, V Keshav, CR Sathwik Structural Engineering Innovations for Resilient Infrastructure: Select … , 2026 2026
Post Fire Mechanical Properties of Butt Weld Subjected to Elevated Temperature HS Manoj, YM Manjunath, V Keshav, P Gagana Structural Engineering Innovations for Resilient Infrastructure: Select … , 2026 2026
Effect of Boundary Conditions on Non-linear Static Buckling of Laminated Composite Pentagonal Plate Made of Aloe Vera Fibers MR GouthamRaj, V Keshav, CR Sathwik International Conference on Sustainable Infrastructure: Innovation … , 2024 2024
Effect of Imperfection in Non-linear Static Buckling of Laminated Composite Hexagonal Plate with Incorporation of Jute Fibers CR Sathwik, V Keshav, MR GouthamRaj International Conference on Sustainable Infrastructure: Innovation … , 2024 2024
Design of Steel Foot Over Bridge—A Proposal P Gagana, V Keshav, HS Manoj International Conference on Sustainable Infrastructure: Innovation … , 2024 2024
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Subjected to Axial Impulse Loads V Keshav, SN Patel, R Kumar Advances in Fluid Mechanics and Solid Mechanics: Proceedings of the 63rd … , 2020 2020
Dynamic Buckling of Laminated Composite Curved Panels Subjected to In-plane Compression. K V., P S.N. In: Rao A., Ramanjaneyulu K. (eds) Recent Advances in Structural Engineering … , 2019 2019
Dynamic buckling of laminated composite rectangular plates subjected to uni-axial compression loads V Keshav, SN Patel Journal of Structural Engineering 45 (1), 21-30 , 2018 2018