Babu Ranjan Thakur

@iitkgp.ac.in

Research Scholar, Department of Aerospace Engineering, IIT Kharagpur
IIT Kharagpur

Babu Ranjan Thakur


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https://researchid.co/brt.iitkgp

RESEARCH INTERESTS

Linear and Nonlinear Static and Dynamic Analysis, Flat and Folded Composite Structures, Buckling and Post-Buckling Analysis, Hygrothermal Environment, Machine Learning.
5

Scopus Publications

154

Scholar Citations

5

Scholar h-index

4

Scholar i10-index

Scopus Publications

  • A unified buckling formulation for linear and nonlinear analysis of laminated plates using penalty based C0 FEM-HSDT model
    Surendra Verma, Abha Gupta, Babu Ranjan Thakur, Donatus Oguamanam, B.N. Singh
    International Journal of Non Linear Mechanics, 2024
  • Dynamic analysis of flat and folded laminated composite plates under hygrothermal environment using a nonpolynomial shear deformation theory
    Babu Ranjan Thakur, Surendra Verma, B.N. Singh, D.K. Maiti
    Composite Structures, 2021
  • Geometrically nonlinear flexural analysis of multilayered composite plate using polynomial and non-polynomial shear deformation theories
    Surendra Verma, Babu Ranjan Thakur, B.N. Singh, D.K. Maiti
    Aerospace Science and Technology, 2021
    In this paper, the geometrically nonlinear bending analysis of multilayered composite plates is carried out through a rigorous comparative study employing Green-Lagrange and von Karman nonlinearity. The responses are analyzed for various transverse loads and boundary conditions, and emphasized the impending structural condition, which requires the consideration of full geometric nonlinearity. The study is conducted using a C 0 finite element plate model using third-order and non-polynomial shear deformation theories (TSDT and NPSDT). The principle of virtual work is utilized to formulate the weak-form of governing equations, and discretized using nine-noded Lagrange elements with seven degrees-of-freedom per node. The performance of the present model has been validated by comparing present results with those available in the literature and obtained ANSYS results. The results reveal that the consideration of Green-Lagrange nonlinearity is essential for plates with all sides subjected to movable simply supported boundary conditions or with one free edge. The present study also provides a clear idea about the utilization of TSDT and NPSDT for the anti-symmetric and symmetric cross-ply plate, respectively, to get more accurate solution. Further, the effect of penalty for various theories and problems is also highlighted, and its prominent impact is asserted for some cases.
  • Geometrically nonlinear dynamic analysis of laminated composite plate using a nonpolynomial shear deformation theory
    Babu Ranjan Thakur, Surendra Verma, B.N. Singh, D.K. Maiti
    International Journal of Non Linear Mechanics, 2021
    A computationally efficient C 0 finite element model in conjunction with the nonpolynomial shear deformation theory (NPSDT) is extended to examine the free and forced vibration behavior of laminated composite plates. The employed NPSDT assumes the nonlinear distribution of in-plane displacements which qualify the requirement of traction free boundary conditions at the top and bottom surfaces. The present formulation utilizes both von Karman and Green–Lagrange type of strain–displacement relations to model the geometric nonlinearity. Using Hamilton’s principle, the nonlinear governing equation of motion is derived and then discretized based on the nine-noded Lagrange element. The obtained equations are solved by utilizing unconditionally stable Newmark’s scheme in conjunction with Newton–Raphson method. A damping effect in the transient analysis has been introduced in the framework of the Rayleigh damping model. The steady state forced vibration analysis has also been carried out by employing harmonic force with excitation frequency around the natural frequency. The arc-length continuation method is applied to obtained the frequency response. The present model has been validated for a wide range of problems and a detailed numerical study has been carried out for several types of boundary conditions under various types of loading with different magnitude of the load.
  • Dynamic analysis of folded laminated composite plate using nonpolynomial shear deformation theory
    Babu Ranjan Thakur, Surendra Verma, B.N. Singh, D.K. Maiti
    Aerospace Science and Technology, 2020
    In this paper, an efficient C 0 finite element modeling based on higher-order nonpolynomial shear deformation theory (NPSDT) is proposed for the dynamic analysis of folded laminated composite plate. The theoretical formulations are based on nine-noded Lagrange isoparametric finite element and inverse hyperbolic shear deformation theory (IHSDT) as NPSDT. The employed theory, IHSDT, assumes the nonlinear and realistic distribution of transverse shear stresses, and also satisfies the traction-free boundary conditions at the top and bottom surfaces of the plate. Hamilton's principle has been adopted to derive the system's governing equation. A penalty approach has been used to take into account the artificial constraints generated due to incorporation of C 0 Lagrange element. The free vibration pertaining to eigenvalue problem is solved using subspace iteration method. The transient analysis subjected to pressure load and vertical load is carried out using Newmark's direct integration scheme. The formulation has been validated with the available solution in the literature, and several novel solutions have been proposed to address the various practical aspects of folded plate. Numerical illustrations are presented to investigate the effect of various parameters such as crank angle, fiber angle, lamination scheme, fold location, and boundary conditions on the natural frequency and transient response of laminated composite plate.

RECENT SCHOLAR PUBLICATIONS

  • A unified buckling formulation for linear and nonlinear analysis of laminated plates using penalty based C0 FEM-HSDT model
    S Verma, A Gupta, BR Thakur, D Oguamanam, BN Singh
    International Journal of Non-Linear Mechanics, 104619 , 2023
    2023
    Citations: 8
  • Effect of Hygrothermal Environment on Dynamic Behavior of Folded Laminated Composite Plate
    BR Thakur, S Verma, BN Singh, DK Maiti
    The International Conference on Theoretical, Applied, Computational and … , 2021
    2021
  • Dynamic analysis of flat and folded laminated composite plates under hygrothermal environment using a nonpolynomial shear deformation theory
    BR Thakur, S Verma, BN Singh, DK Maiti
    Composite Structures 274, 114327 , 2021
    2021
    Citations: 41
  • Geometrically nonlinear flexural analysis of multilayered composite plate using polynomial and non-polynomial shear deformation theories
    S Verma, BR Thakur, BN Singh, DK Maiti
    Aerospace Science and Technology 112, 106635 , 2021
    2021
    Citations: 28
  • Geometrically nonlinear dynamic analysis of laminated composite plate using a nonpolynomial shear deformation theory
    BR Thakur, S Verma, BN Singh, DK Maiti
    International Journal of Non-Linear Mechanics 128, 103635 , 2021
    2021
    Citations: 32
  • Dynamic analysis of folded laminated composite plate using nonpolynomial shear deformation theory
    BR Thakur, S Verma, BN Singh, DK Maiti
    Aerospace Science and Technology 106, 106083 , 2020
    2020
    Citations: 43
  • Effect of folding on dynamic behaviour of laminated composite plate
    BR Thakur, S Verma, BN Singh, DK Maiti
    International Conference, AeSI-2020 on Aviation Technology-Current Scenario … , 2020
    2020
  • Dynamic Analysis of Laminated Composite Plate Using Non-Polynomial Shear Deformation Theory Under Hygrothermal Environment
    BR Thakur, S Verma, BN Singh, DK Maiti
    AIAA Scitech 2019 Forum, 1027 , 2019
    2019
    Citations: 2
  • Nonlinear free vibration of laminated composite plate using inverse hyperbolic shear deformation theory
    BR Thakur, S Verma, BN Singh, DK Maiti
    International Conference on Composite Materials and Structures, ICCMS,IIT … , 2017
    2017
  • Vibration Analysis of Piezoelectric Laminated Composite Plate Using Inverse Hyperbolic Shear Deformation Theory
    BR Thakur, S Verma, BN Singh, DK Maiti
    The International Conference on Theoretical, Applied, Computational and … , 2017
    2017

MOST CITED SCHOLAR PUBLICATIONS

  • Dynamic analysis of folded laminated composite plate using nonpolynomial shear deformation theory
    BR Thakur, S Verma, BN Singh, DK Maiti
    Aerospace Science and Technology 106, 106083 , 2020
    2020
    Citations: 43
  • Dynamic analysis of flat and folded laminated composite plates under hygrothermal environment using a nonpolynomial shear deformation theory
    BR Thakur, S Verma, BN Singh, DK Maiti
    Composite Structures 274, 114327 , 2021
    2021
    Citations: 41
  • Geometrically nonlinear dynamic analysis of laminated composite plate using a nonpolynomial shear deformation theory
    BR Thakur, S Verma, BN Singh, DK Maiti
    International Journal of Non-Linear Mechanics 128, 103635 , 2021
    2021
    Citations: 32
  • Geometrically nonlinear flexural analysis of multilayered composite plate using polynomial and non-polynomial shear deformation theories
    S Verma, BR Thakur, BN Singh, DK Maiti
    Aerospace Science and Technology 112, 106635 , 2021
    2021
    Citations: 28
  • A unified buckling formulation for linear and nonlinear analysis of laminated plates using penalty based C0 FEM-HSDT model
    S Verma, A Gupta, BR Thakur, D Oguamanam, BN Singh
    International Journal of Non-Linear Mechanics, 104619 , 2023
    2023
    Citations: 8
  • Dynamic Analysis of Laminated Composite Plate Using Non-Polynomial Shear Deformation Theory Under Hygrothermal Environment
    BR Thakur, S Verma, BN Singh, DK Maiti
    AIAA Scitech 2019 Forum, 1027 , 2019
    2019
    Citations: 2
  • Effect of Hygrothermal Environment on Dynamic Behavior of Folded Laminated Composite Plate
    BR Thakur, S Verma, BN Singh, DK Maiti
    The International Conference on Theoretical, Applied, Computational and … , 2021
    2021
  • Effect of folding on dynamic behaviour of laminated composite plate
    BR Thakur, S Verma, BN Singh, DK Maiti
    International Conference, AeSI-2020 on Aviation Technology-Current Scenario … , 2020
    2020
  • Nonlinear free vibration of laminated composite plate using inverse hyperbolic shear deformation theory
    BR Thakur, S Verma, BN Singh, DK Maiti
    International Conference on Composite Materials and Structures, ICCMS,IIT … , 2017
    2017
  • Vibration Analysis of Piezoelectric Laminated Composite Plate Using Inverse Hyperbolic Shear Deformation Theory
    BR Thakur, S Verma, BN Singh, DK Maiti
    The International Conference on Theoretical, Applied, Computational and … , 2017
    2017