Department of Civil Engineering: Recent submissions

Now showing items 181-200 of 826

Non-linear stability and failure of laminated composite stiffened cylindrical panels subjected to in-plane impulse loading

Patel, Shuvendu Narayan; Kumar, Rajesh (Elsevier, 2021-02)

In this article, the non-linear dynamic buckling behavior and failure of laminated composite stiffened cylindrical (LCSC) panel is performed in the finite element framework when subjected to sinusoidal and rectangular ...
Nonlinear damped vibrations of three-phase CNT-FRC circular cylindrical shell

Kumar, Rajesh (Elsevier, 2021-01)

This study presents a semi-analytical solution of nonlinear vibrations of circular cylindrical shells made of carbon nanotube (CNT) fiber-reinforced composite (CNT-FRC). Vibrations are produced by a radial harmonic force ...
Nonlinear vibration and instability of a randomly distributed CNT-reinforced composite plate subjected to localized in-plane parametric excitation

Kumar, Rajesh; Patel, Shuvendu Narayan; Watts, Gaurav (Elsevier, 2022-01)

This study presents a semi-analytical formulation for the nonlinear vibration and dynamic instability of a randomly distributed carbon nanotube-reinforced composite (RD-CNTRC) plate. Three cases of localized in-plane ...
Instability characteristics of variable stiffness laminated composite curved panels under non-uniform periodic excitation

Kumar, Rajesh (Elsevier, 2022-02)

The instability characteristics of variable stiffness laminated composite (VSLC) shell panels subjected to non-uniform in-plane periodic excitations are explored in the present article. The non-constant orientation of fiber ...
A semi-analytical framework for time history response of a carbon nanotube-reinforced polymer damped composite plate: Influence of instability regions

Kumar, Rajesh (Wiley, 2021-12)

The influence of dynamic instability regions (DIRs) (stable and unstable) on the time history response of a randomly distributed carbon nanotube-reinforced polymer composite (RD-CNTRPC) plate under partial edge (nonuniform) ...
A semi-analytical framework for non-linear dynamic response of multi-phase laminated composite plate under the transverse patch and in-plane pulse localized loadings

Kumar, Rajesh (Taylor & Francis, 2022-06)

The non-linear dynamic response of a randomly distributed carbon nanotube fiber-reinforced laminated composite (CNTFRLC) plate subjected to various in-plane pulse localized loadings and transverse patch loading is presented ...
Effect of Cutout on the Stability and Failure of Laminated Composite Cylindrical Panels Subjected to In-Plane Pulse Loads

Watts, Gaurav; Kumar, Rajesh; Patel, Shuvendu Narayan (World Scientific, 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 ...
Postbuckling and postbuckled vibration behaviour of imperfect trapezoidal sandwich plates with FG-CNTRC face sheets under nonuniform loadings

Watts, Gaurav; Kumar, Rajesh; Patel, Shuvendu Narayan (Elsevier, 2022-08)

The present work investigates the postbuckling, and postbuckled vibration behaviour of initially imperfect trapezoidal sandwich plates with functionally graded carbon nanotube reinforced composite (FG-CNTRC) face sheets ...
Nonlinear Response and Buckling of Imperfect Plates Under In-Plane Pulse Forces: A Semi-analytical Investigation

Kumar, Rajesh; Patel, Shuvendu Narayan (Springer, 2022)

This study presents a semi-analytical solution of the nonlinear dynamic response, shock spectrum, and dynamic buckling of a simply supported imperfect plate under various types of in-plane pulse forces. Here, the plate is ...
Thermal Stability Analysis of Three-Phase CNTRFC Cylindrical Shell Panels

Kumar, Rajesh (ASCE, 2022)

The linear and non-linear thermal stability characteristics of three-phase randomly distributed carbon nanotube (CNT)–reinforced fiber composite (RD-CNTRFC) shell panels are explored in the present study. Nonlinear kinematics ...
A semi-analytical approach for instability analysis of composite cylindrical shells subjected to harmonic axial loading

Kumar, Rajesh (Elsevier, 2022-09)

In this article, nonlinear vibration and dynamic stability analyses of simply supported laminated composite circular cylindrical shells subjected to periodic edge loading are carried out. A third-order shear deformation ...
Buckling and free vibration analysis of randomly distributed CNT reinforced composite beam under thermomechanical loading

Kumar, Rajesh (Elsevier, 2022-12)

In this study, the buckling and free vibration characteristics of three-phase randomly distributed carbon nanotube (CNT) reinforced fiber composite (RD-CNTRFC) beams subjected to in-plane compressive loadings and thermal ...
Nonlinear analysis of sandwich plate with FG porous core and RD-CNTCFRC face sheets under transverse patch loading

Kumar, Rajesh; Bhunia, Dipendu; Patel, Shuvendu Narayan (Springer, 2022-09)

Nonlinear bending analysis of a sandwich plate with randomly distributed carbon nanotube and carbon fiber-reinforced composite (RD-CNTCFRC) face sheets and functionally graded (FG) porous core subjected to transverse patch ...
Pre-buckling vibration and buckling analyses of composite skew plate: An analytical investigation

Kumar, Rajesh (Sage, 2022-09)

In this work, the analytical investigation for pre-buckling vibration and buckling analyses of a composite skew plate subjected to parabolically and linearly varying in-plane edge load are presented. When the composite ...
Size-dependent nonlinear vibration and instability of a damped microplate subjected to in-plane parametric excitation

Kumar, Rajesh (Elsevier, 2023-03)

The semi-analytical framework for nonlinear vibration and dynamic instability of a damped microplate under periodic parametric excitation is presented. The microplate is modeled using the higher-order shear deformation ...
Geometrically nonlinear dynamic analysis of a damped porous microplate resting on elastic foundations under transverse patch loadings

Kumar, Rajesh (Taylor & Francis, 2023-06)

This is a unique study in which a damped porous microplate’s nonlinear vibration and response are analyzed semi-analytically using MSGT and HSDT under localized loading. The substrate is modeled using the Winkler-Pasternak ...
Influence of Carbon Nanotubes on Stability and Vibration Characteristics of Plates and Panels in Thermal Environment: A Review

Kumar, Rajesh (Springer, 2023-07)

Laminated composites became a cutting-edge material in the twentieth century due to their extensive use in engineering, owing to their high strength and lightweight characteristics. Composites are manufactured with polymers ...
Geometrically nonlinear dynamic analysis of a damped porous microplate resting on elastic foundations under in-plane nonuniform excitation

Kumar, Rajesh; Patel, Shuvendu Narayan (Taylor & Francis, 2023-07)

This article uses the semi-analytical approach to study the combined nonlinear vibration and nonlinear response of a damped porous microplate under nonuniform periodic parametric excitation to understand the complete ...
Can We Remove Secular Terms for Analytical Solution of Groundwater Response under Tidal Influence?

Munusamy, Selva Balaji (ARXIV, 2016-05)

This paper presents a secular term removal methodology based on the homotopy perturbation method for analytical solutions of nonlinear problems with periodic boundary condition. The analytical solution for groundwater ...
Optimal Control of Saltwater Intrusion in Coastal Aquifers Using Analytical Approximation Based on Density Dependent Flow Correction

Munusamy, Selva Balaji (Springer, 2020-01)

Pumping well management in coastal aquifers required to account for the saltwater intrusion problem. The prevention saltwater contamination of pumping wells should be considered along with the objective of maximum groundwater ...

Now showing items 181-200 of 826

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