Theoretical and experimental modal analysis of polymeric hybrid lap joint structure with and without damage Dhananjay Kumar, Naveen Kumar Akkasali, Ankit Gangwar, Pradeep Kumar Mishra, Gaurav Kumar, Mostafizur Rahaman, Subrata Kumar Panda, Jayant Giri, Saurav Mallik Polymer Composites, 2025 This research reported the eigenvalue responses of delaminated hybrid (adhesive and bolted) polymeric joint components using a simulation model via ABAQUS. First, a simulation model is developed into by combining two different eight‐noded elements for the glass‐fiber‐reinforced polymeric adherents (quadrilateral in‐plane general‐purpose continuum shell element, SC8R) and the adhesives (linear brick) for the discretization of the component. The necessary end boundary conditions are now adopted to compute the desired eigenvalues using Lanchzo's solution steps. Further, the model validity, including the element‐sensitive analysis, is performed by computing a few examples. In this regard, the responses are initially compared with numerical results available in the published domain and further verified with in‐house experimentation (intact and damaged). The frequency response of the developed model deviates from the published data by a maximum of 15%. Similarly, the numerical frequency response deviates from the experimental findings, ranging from a minimum of 1.13% to a maximum of 18.5%. Based on the model's accuracy and consistency, the simulation model of the hybrid polymeric joint structure is extended further to evaluate the influences of geometrical parameters and delamination. Finally, a set of recommendations is illustrated from the numerical experimentation of the intact/damaged hybrid lap joint structure. The fiber layup orientation, boundary condition, and aspect ratio significantly impact the natural frequency response of adhesively bonded joints.Highlights The hybrid joint modal responses are investigated numerically, including delamination. Two types of joints (adhesive and anchored with bolt) are utilized for the component fabrication. The simulated frequency values are verified with in‐house experimentation. The effect of delamination on hybrid joint frequency is computed via numerical experimentation.
Effect of Build Orientation and Infill Density on Mechanical Properties of FDM Build ABS Parts Kumar Aviseck Jati, Pradeep Kumar Mishra Fused Deposition Modeling Technology Applications and Developments, 2025 Fused deposition modeling (FDM) is a technique for building three-dimensional specimens by depositing fused layers of material as per the predefined cross-sectional geometry from a computer-aided design (CAD) model. The various process parameters used have a big effect on the quality of the parts produced by FDM. The present study examines how build orientation and infill density affect the mechanical characteristics of FDM-printed parts, such as tensile strength and compressive strength of the parts. The orientation of the parts during part fabrication in FDM is crucial because it affects the part’s strength, including its tensile and compressive strengths. According to American Society for Testing and Materials standards, specimens are prepared for tensile and compression tests. It is found that the specimen’s build orientation has a greater effect on strength. The D638 standard allows a variety of shapes during tensile testing. Compression testing is carried out according to the D695 standard, which permits steady compression testing. From the tensile test result, it is found that the ultimate tensile strength reduces as the build orientation increases from 00 to 300. In both high infill density and low infill density, it reaches its maximum at 00 orientations and minimum at 300 orientations, respectively. The compressive test results show that the final compressive strength decreases as part orientation increases from 00 to 300. It has a maximum orientation of 00 and a minimum orientation of 300, respectively. In both cases of high infill and low infill density, it was found that the tensile strength and compressive strength are maximum when the build orientation is toward the axial direction and minimum when the construct orientation is toward the transverse direction. Higher tensile strength and compressive strength are achieved with high infill density.
Minimization of delamination effect on laminated composite plates using functional materials (piezoelectric and magnetostrictive) Pradeep Kumar Mishra, Subhransu K. Panda, S. N. Pati, Erukala Kalyan Kumar, Subrata Kumar Panda Mechanics Based Design of Structures and Machines, 2024 AbstractIn this paper, minimization of delamination effect on laminated composite plates using smart (piezoelectric and magnetostrictive) materials has been investigated. The static and dynamic responses of the smart composite plates with/without delamination have been obtained using the finite element method. The validation and comparison studies of the laminated composite plate have also been performed to show the level of accuracy of the presently adopted model by solving a few examples related to static and frequency cases. For control and minimization of delamination effect, smart materials have been introduced at the various layers of the laminated panel. Further, the influence of delamination size, location, orientation scheme, aspect ratio, modular ratio and different boundary conditions on the dynamic response of the smart delaminated composite plate has been analyzed. Finally, optimization study has been carried out to find the optimal value of these parameters by minimizing the difference between the frequency responses. Here, two optimization algorithms TLBO and PSO have been considered to carry out the optimization study and results obtained from both techniques are validated and compared.Keywords: Aspect ratiodelaminationmagnetostrictive materialmodular ratioorientation schemepiezoelectric materialpSOtLBO Data availability statementThe results are derived step-wise and interconnected and no separate data or results are adopted to complete this article. Additionally, authors of the article extending their willingness to provide the details on a specific request and the research in evolving stage to reach the final stage.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingSERB India supports this research work under Teachers Associateship for Research Excellence (TARE) scheme. The authors are thankful to TARE (SERB India) for their constant support. File no TAR/2020/000168 dated 19 December 2020.
The effect of delamination in free vibration responses of adhesively bonded spar wingskin joints P. K. Mishra, A. K. Pradhan, M. K. Pandit, S. K. Panda Mechanics Based Design of Structures and Machines, 2023 In this article, the effects of damage (delamination) on the structural vibration characteristics of spar wingskin joints (SWJs) made with curved laminated composites are investigated. Three dimensional finite element analysis is employed to evaluate the natural frequencies and corresponding mode shapes of the joint structure considered. Virtual elements are implemented in the delamination region to prevent inter element penetration. The effectiveness of the finite element analysis technique used is validated with available results. Additionally, the effects of various parameters such as delamination size, curvature effect (shallowness angle), laminate stacking sequence, overlap length, and material anisotropy (modular ratio) on the free vibration responses of the curved SWJ are analyzed in details. The present delamination modeling and simulated results could serve as guidelines in designing curved laminated composite joint structures with/without delaminations.
Modelling and analysis of static and modal responses of leaf spring used in automobiles A. Balakrishna, P.K. Mishra International Journal of Hydromechatronics, 2022 The finite element-based static and modal analysis of the automobile leaf spring has been carried out using ANSYS workbench. The von-Mises stress, total deformation and weight reduction of the leaf spring have been evaluated for various geometric, material and loading conditions. The model validation and comparison studies have been performed with the available literatures. The free vibrational analysis has also been evaluated for the first five modes to avoid the resonance condition. It is found that the boron/Al-graphite/epoxy with an aspect ratio of 6.36 as the best combination for reduction of weight, deflection and modal response of the leaf spring used.
Static and dynamic analysis of spur gear Subhransu Kumar Panda, Pradeep Kumar Mishra, Biswaranjan Patra, Subrata Kumar Panda International Journal of Hydromechatronics, 2020
Performance evaluation of MWCNT-reinforced hybrid lap joints under static and dynamic loading: An experimental validation SK Panda, CB Mishra, L Sahu, PK Mishra Structures 84, 111118 , 2026 2026
Numerical hygrothermal frequency of pre-damage shallow shell panel: A nonlinear FE approach CK Hirwani, S Tiwari, PK Mishra, HC Dewangan, SK Panda Waves in Random and Complex Media 35 (4), 7823-7837 , 2025 2025 Citations: 9
Theoretical and experimental modal analysis of polymeric hybrid lap joint structure with and without damage D Kumar, NK Akkasali, A Gangwar, PK Mishra, G Kumar, M Rahaman, ... Polymer Composites , 2025 2025
Minimization of delamination effect on laminated composite plates using functional materials (piezoelectric and magnetostrictive) PK Mishra, SK Panda, SN Pati, EK Kumar, SK Panda Mechanics Based Design of Structures and Machines 52 (8), 5849-5870 , 2024 2024 Citations: 7
Free Vibration Frequency Prediction to Design Optimum Adhesively Bonded Composite Double Lap Joint PK Mishra, N Padhee, SK Panda, EK Kumar, SK Panda Journal of Vibration Engineering & Technologies 12 (4), 5571-5584 , 2024 2024 Citations: 7
Strain energy release rates in the curved spar wingskin joints with pre-embedded delaminations PK Mishra, AK Pradhan, MK Pandit, SK Panda Structural Engineering and Mechanics 87 (1), 47-56 , 2023 2023
Multi-objective optimization of wire-EDM of Inconel 625 by using desirability function approach SK Kar, PK Mishra, AK Sahu, SS Mahapatra, J Thomas International Journal on Interactive Design and Manufacturing (IJIDeM) 17 (2 … , 2023 2023 Citations: 22
The effect of delamination in free vibration responses of adhesively bonded spar wingskin joints PK Mishra, AK Pradhan, MK Pandit, SK Panda Mechanics Based Design of Structures and Machines 51 (2), 914-931 , 2023 2023 Citations: 5
Damaged composite structural strength enhancement under elevated thermal environment using shape memory alloy fiber KK Erukala, PK Mishra, HC Dewangan, SK Panda, M Dwivedi Acta Mechanica 233 (8), 3133-3155 , 2022 2022 Citations: 20
Thermal post-buckling strength prediction and improvement of shape memory alloy bonded carbon nanotube-reinforced shallow shell panel: a nonlinear finite element … K Mehar, PK Mishra, SK Panda Journal of Pressure Vessel Technology 143 (6), 061301 , 2021 2021 Citations: 27
Damage propagation prediction of adhesion failure in composite T-joint structure and improvement using PZT patch SK Panda, PK Mishra Scientia Iranica 28 (6), 3232-3245 , 2021 2021 Citations: 6
Numerical investigation of thermal frequency responses of graded hybrid smart nanocomposite (CNT-SMA-Epoxy) structure K Mehar, PK Mishra, SK Panda Mechanics of Advanced Materials and Structures 28 (21), 2242-2254 , 2021 2021 Citations: 66
Nonlinear steady-state responses of weakly bonded composite shell structure under hygro-thermo-mechanical loading CK Hirwani, PK Mishra, SK Panda Composite Structures 265, 113768 , 2021 2021 Citations: 22
Thermal buckling strength of smart nanotube-reinforced doubly curved hybrid composite panels K Mehar, PK Mishra, SK Panda Computers & Mathematics with Applications 90, 13-24 , 2021 2021 Citations: 33
Thermal Post-Buckling Strength Prediction and Improvement of SMA Bonded Carbon Nanotube-Reinforced Shallow Shell Panel: A Nonlinear FE Micromechanical Approach K Mehar, PK Mishra, S Panda Journal of Pressure Vessel Technology , 2021 2021
Modelling and analysis of static and modal responses of leaf spring used in automobiles A Balakrishna, PK Mishra International Journal of Hydromechatronics 4 (4), 350-367 , 2021 2021 Citations: 29
Influence of debonding on nonlinear deflection responses of curved composite panel structure under hygro-thermo-mechanical loading–macro-mechanical FE approach CK Hirwani, SK Panda, PK Mishra International Journal of Non-Linear Mechanics 128, 103636 , 2020 2020 Citations: 18
Modelling and prediction of free vibration response of adhesive bonded corner joint structures A Bidyadhar, PK Mishra Structures 29, 185-198 , 2020 2020 Citations: 8
Static and dynamic analysis of spur gear SK Panda, PK Mishra, B Patra, SK Panda International Journal of Hydromechatronics 3 (3), 268-280 , 2020 2020 Citations: 31
Numerical investigation for improved heat transfer characteristics in micro‐fin tubes K Dhamudia, PK Mishra Heat Transfer 50 (1), 688-711 , 2020 2020 Citations: 3
MOST CITED SCHOLAR PUBLICATIONS
Numerical investigation of thermal frequency responses of graded hybrid smart nanocomposite (CNT-SMA-Epoxy) structure K Mehar, PK Mishra, SK Panda Mechanics of Advanced Materials and Structures 28 (21), 2242-2254 , 2021 2021 Citations: 66
Thermal buckling strength of smart nanotube-reinforced doubly curved hybrid composite panels K Mehar, PK Mishra, SK Panda Computers & Mathematics with Applications 90, 13-24 , 2021 2021 Citations: 33
Static and dynamic analysis of spur gear SK Panda, PK Mishra, B Patra, SK Panda International Journal of Hydromechatronics 3 (3), 268-280 , 2020 2020 Citations: 31
Modelling and analysis of static and modal responses of leaf spring used in automobiles A Balakrishna, PK Mishra International Journal of Hydromechatronics 4 (4), 350-367 , 2021 2021 Citations: 29
Thermal post-buckling strength prediction and improvement of shape memory alloy bonded carbon nanotube-reinforced shallow shell panel: a nonlinear finite element … K Mehar, PK Mishra, SK Panda Journal of Pressure Vessel Technology 143 (6), 061301 , 2021 2021 Citations: 27
Theoretical and experimental modal responses of adhesive bonded T-joints MC Kunche, PK Mishra, HB Nallala, CK Hirwani, PV Katariya, S Panda, ... Wind & structures 29 (5), 361-369 , 2019 2019 Citations: 23
Multi-objective optimization of wire-EDM of Inconel 625 by using desirability function approach SK Kar, PK Mishra, AK Sahu, SS Mahapatra, J Thomas International Journal on Interactive Design and Manufacturing (IJIDeM) 17 (2 … , 2023 2023 Citations: 22
Nonlinear steady-state responses of weakly bonded composite shell structure under hygro-thermo-mechanical loading CK Hirwani, PK Mishra, SK Panda Composite Structures 265, 113768 , 2021 2021 Citations: 22
Damaged composite structural strength enhancement under elevated thermal environment using shape memory alloy fiber KK Erukala, PK Mishra, HC Dewangan, SK Panda, M Dwivedi Acta Mechanica 233 (8), 3133-3155 , 2022 2022 Citations: 20
Influence of debonding on nonlinear deflection responses of curved composite panel structure under hygro-thermo-mechanical loading–macro-mechanical FE approach CK Hirwani, SK Panda, PK Mishra International Journal of Non-Linear Mechanics 128, 103636 , 2020 2020 Citations: 18
Inter-laminar delamination analyses of Spar Wingskin Joints made with flat FRP composite laminates PK Mishra, AK Pradhan, MK Pandit International Journal of Adhesion and Adhesives 68, 19-29 , 2016 2016 Citations: 12
Numerical hygrothermal frequency of pre-damage shallow shell panel: A nonlinear FE approach CK Hirwani, S Tiwari, PK Mishra, HC Dewangan, SK Panda Waves in Random and Complex Media 35 (4), 7823-7837 , 2025 2025 Citations: 9
Delamination propagation analyses of spar wingskin joints made with curved laminated FRP composite panels PK Mishra, AK Pradhan, MK Pandit Journal of adhesion science and Technology 30 (7), 708-728 , 2016 2016 Citations: 9
Modelling and prediction of free vibration response of adhesive bonded corner joint structures A Bidyadhar, PK Mishra Structures 29, 185-198 , 2020 2020 Citations: 8
Minimization of delamination effect on laminated composite plates using functional materials (piezoelectric and magnetostrictive) PK Mishra, SK Panda, SN Pati, EK Kumar, SK Panda Mechanics Based Design of Structures and Machines 52 (8), 5849-5870 , 2024 2024 Citations: 7
Free Vibration Frequency Prediction to Design Optimum Adhesively Bonded Composite Double Lap Joint PK Mishra, N Padhee, SK Panda, EK Kumar, SK Panda Journal of Vibration Engineering & Technologies 12 (4), 5571-5584 , 2024 2024 Citations: 7
Adhesion failure propagation analyses of Spar Wingskin Joints made with curved laminated FRP composite and FGM panels PK Mishra, AK Pradhan, MK Pandit International Journal of Adhesion and Adhesives 85, 77-87 , 2018 2018 Citations: 7
Damage propagation prediction of adhesion failure in composite T-joint structure and improvement using PZT patch SK Panda, PK Mishra Scientia Iranica 28 (6), 3232-3245 , 2021 2021 Citations: 6
Numerical modeling and prediction of adhesion failure of adhesively bonded composite T-Joint structure SK Panda, PK Mishra, SK Panda Structural Engineering and Mechanics, An Int'l Journal 74 (6), 723-735 , 2020 2020 Citations: 6
The effect of delamination in free vibration responses of adhesively bonded spar wingskin joints PK Mishra, AK Pradhan, MK Pandit, SK Panda Mechanics Based Design of Structures and Machines 51 (2), 914-931 , 2023 2023 Citations: 5
