Journal Articles
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Item Engineers guide to Terfenol-D actuators: Design, performance, and real-world applications(Elsevier B.V., 2024) Patil, M.A.; Kadoli, R.Terfenol-D, a rare earth substance renowned for its remarkable magnetostrictive capabilities, is used in the field of actuators and sensors. The objective of this study is to demonstrate the most recent developments in Terfenol-D actuator technology and its use in many fields such as motors, fuel injectors, inkjet printing heads, servovalves, pumps, and active vibration controllers. The emphasis will be on showcasing the latest accomplishments in this domain. This study offers comprehensive insights into the design, operational features, and performance metrics of several Terfenol-D actuators, accompanied by pertinent schematic illustrations and quantitative measurements. This paper provides an overview of the fundamental structures, consistency of the magnetic field along the Terfenol-D rod, displacement amplification process, and several applications. The focus of the argument has been on the ongoing scientific studies about the actuation capabilities of Terfenol-D actuators. This review paper aims to appeal to the interests and passion of academics, researchers, and engineers involved in the manufacturing, design, analysis, and control of Terfenol-D actuators. © 2024Item State-of-the-Art in Different Formulations of Super Convergent Mesh-Less Differential Quadrature Method(Springer Science and Business Media B.V., 2025) Patil, M.A.; Kadoli, R.The primary objective of this study is to provide a literature review on the use of various kinds of differential quadrature techniques in the area of structural dynamics.The studies mostly focus on analyzing the buckling, free, and forced vibrations of isotropic and anisotropic beams and plates. The research study does not claim to be comprehensive; hence, certain choices must be made. The papers discussed in this article pertain to various formulations of differential quadrature methods, including the generalized method, inverse differential quadrature, differential quadrature element method, variational differential quadrature method, cubic-spline-based differential quadrature method, and radial basis function-based differential quadrature method. We assess the significant publications and challenges that have used these techniques. © The Author(s) under exclusive licence to International Center for Numerical Methods in Engineering (CIMNE) 2025.Item Differential quadrature solution for vibration control of functionally graded beams with Terfenol-D layer(Elsevier Inc. usjcs@elsevier.com, 2020) Patil, M.A.; Kadoli, R.The governing differential equation of motion for vibration control of a functionally graded material (FGM) beam using magnetostrictive layers is solved using differential quadrature method(DQM). It is known that, when differential quadrature is implemented directly for the solution of governing differential equation for vibration control of beam, it is required to convert the generalised eigenvalue problem into standard eigenvalue problem. However in the present work, the original differential equation of vibration control of beam is be separated into two simpler second and fourth order differential equations using the separation of variables in conjunction with the characteristics equation of damped single degree of freedom system. Solution of corresponding two simpler differential equation also yields damped natural frequency and damped factor comparable to that of the former approach. It is to be noted that using either of the solutions using differential quadrature method ? point description of the physical domain at boundary is used to obtained the differential quadrature equations for the various boundary conditions of the beam. In order to assure the accuracy of formulation and solution using DQM, convergence behavior of natural frequencies is examined for five combinations of boundary conditions and comparison studies from the two solution approaches is presented. The effect of the location of the magnetostrictive layers, material properties and control parameters on the vibration suppression are investigated. © 2020 Elsevier Inc.Item Influence of Winkler and viscoelastic foundation on free vibration of functionally graded beam integrated with Terfenol-D layer(Springer Science and Business Media Deutschland GmbH info@springer-sbm.com, 2020) Patil, M.A.; Kadoli, R.Free vibration of functionally graded beam integrated with Terfenol-D layer on Winkler-two parameter and viscoelastic foundation are studied by means of differential quadrature method within the framework of classical beam theory. The material properties of functionally graded beam integrated Terfenol-D layer are estimated by using the rule of mixture. The applied kinematic boundary conditions are implemented using ?-point and modified weighting coefficient approach. The solution of simply supported functionally graded material beam with Terfenol-D layer (FGMT) resting on the Winkler elastic foundation is obtained by using the technique of Navier. The numerical results obtained using differential quadrature method (DQM) and modified differential quadrature method (MDQM) are compared with exact results obtained from analytical formulation where excellent agreement is observed. The parametric study is carried out to encapsulate the influence of Winkler-two parameter and the viscoelastic foundation on the vibration characteristics of functionally graded beams integrated with Terfenol-D layer. © 2020, The Brazilian Society of Mechanical Sciences and Engineering.Item Internet-of-things and mobile application based hybrid model for controlling energy system(Springer Science and Business Media B.V., 2021) Patil, M.A.; Parane, K.; Poojara, S.; Patil, A.The Internet-of-Things (IoT) aims to combines physical objects in the world under a common infrastructure, it gives not only control of things, but also notify the state of the things. The automation for power saving based on the IoT has great business potential. The serious concern about the wastage of energy and this paper proposes an innovative hybrid method for automation system to reduce the wastage of power. The proposed hybrid method allows users to control and operate the electrical appliances manually or automatically. In automatic mode appliances are controlled through passive infrared (PIR) sensors and in manual mode appliances are controlled using android application. The developed system is deployed and tested in Laboratory, where it is used to control the electrical appliances such as, fans and tube lights. The usage of electricity is monitored and it is observed that the system reduced electrical bill of the laboratory by 24%. Finally, we have made a comparative analysis against existing system and it shows that the proposed hybrid system is better as compared to the existing systems. © 2021, Bharati Vidyapeeth's Institute of Computer Applications and Management.Item Effect of two-parameter partial foundation and viscoelastic supports on free vibration of Terfenol-D layered functionally graded fluid conveying pipe using domain decomposition technique(Taylor and Francis Ltd., 2023) Patil, M.A.; Kadoli, R.The purpose of the current research work is to investigate the free vibration control characteristics of a Terfenol-D layered functionally graded fluid-conveying pipe when subjected to partial two-parameter foundation, viscoelastic supports, and multi-span length. The integration of differential quadrature method with domain decomposition and the δ point approach, as well as Terfenol-D layer actuation with viscoelastic supports, distinguishes the current study effort. The equivalent spring stiffness for the two-parameter partial foundation is determined methodically for various elastic soil materials. The effect of varied spans with viscoelastic supports on the stability of fluid conveying pipes is also explored. © 2022 Taylor & Francis Group, LLC.Item Analytical solution for free vibration of symmetric Terfenol-D layered functionally graded beam with different boundary conditions(Springer Science and Business Media Deutschland GmbH, 2023) Patil, M.A.; Kadoli, R.A unified analytical approach is established to predict the frequency behaviour of symmetric functionally layer-wise graded beams with an integrated Terfenol-D layer under simply supported, clamped-clamped, and clamped-simply supported boundary conditions. In contrast to previous research, the analytical solution relies on transcendental equations. Terfenol-D layered functionally graded beam uses Reddy’s generalised beam theory as the basis for its governing equation. First-order shear deformation and rotating inertia were taken into consideration in the study. To ensure the accuracy of the analytical solution, comparisons are made with the current differential quadrature solution based on Euler–Bernoulli beam theory. The current analytical solution yields frequency results that are in good agreement with those obtained by the differential quadrature approach. The present analytical means is straightforward and easy to understand as compared to previous researcher’s work. © 2023, The Author(s), under exclusive licence to The Brazilian Society of Mechanical Sciences and Engineering.Item Differential-integral quadrature numerical solution for free and forced vibration of bidirectional functionally graded Terfenol-D curved beam(Taylor and Francis Ltd., 2024) Patil, M.A.; Kadoli, R.; Saraf, S.; Naskar, S.The dynamic behaviour of a bidirectional functionally graded Terfenol-D curved beam under a moving load is the focus of this study. Combined differential and integral quadrature solve the curved beam boundary value problem. A bidirectional functionally graded Terfenol-D curved beam's damping, damped frequencies for different boundary conditions, and mode shapes were examined in free vibration investigations. Based on accessible literature data, the findings are reliable. Furthermore, DQ-IQ numerical technique findings examine the impact of many factors, including control gain, thickness, moving load velocity, bidirectional gradation index, and multi-moving load. © 2023 Taylor & Francis Group, LLC.Item Investigation of moving load-induced vibrations in layered functionally graded Terfenol-D beams: a differential quadrature method and analytical approach(Taylor and Francis Ltd., 2024) Patil, M.A.; Saraf, S.; Kadoli, R.; Naskar, S.The paper investigates the potential of the full-sinusoidal Fourier series as a solution form for the deflection of layered functionally graded beams associated with smart actuators, drawing on the fundamental principles of classical Fourier series theory. The current method simplifies the difficult beam problem to a set of linear algebraic equations by using the Duhamel integration technique and the orthogonality of the trial function. The study takes into account generalized boundary conditions and moving forces, which are seldom discussed in previous research. Under the action of a moving load, the boundary value problem for a functionally graded beam integrated with Terfenol-D is efficiently addressed using the approach of combined differential and integral quadrature. The generalized boundary conditions may be easily achieved by adjusting the stiffness of the restraining springs. The significant agreement between the differential quadrature solution and the Fourier series solution underlines the efficiency and accuracy of both methods. Furthermore, the influences of various crucial physical characteristics on the natural frequencies and the essential flow velocities are explored, including boundary stiffness, foundation parameters, and geometric parameters. © 2024 Taylor & Francis Group, LLC.Item Magnetostrictive assisted free and forced vibration response of layered functionally graded circular plate with effect of prestress(Institute of Physics, 2024) Patil, M.A.; Kadoli, R.One of the optimization requirements for improving the performance of magnetostrictive materials is prestress, which improves the magnetostriction coefficient. The influence of prestress on the fundamental frequencies and vibration suppression of a smart functionally graded circular plate is examined in the current work. The coupled differential equations regulating the motion are derived using Hamilton’s principle. This paper proposes using Kerr’s foundation as a flexible support structure for the disc braking system assembly. The Dirac-delta function and differential quadrature technique have been used to quantitatively simulate the forced vibration behaviour of a circular plate under moving loads. The accuracy and validity of the method used are tested by comparing numerical results to those that have already been published. © 2024 IOP Publishing Ltd. All rights, including for text and data mining, AI training, and similar technologies, are reserved.