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Journal articles on the topic 'Nonlinear device analysis'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Low, P. S., R. Ramlan, H. A. Ghani, and N. S. Muhammad. "Experimental Analysis on the Transduction Coefficient of a Non-Linear Electromagnetic Energy Harvesting Device with Softening Stiffness." International Journal of Automotive and Mechanical Engineering 17, no. 2 (2020): 7816–31. http://dx.doi.org/10.15282/ijame.17.2.2020.01.0582.

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Nonlinear energy harvesting devices in the form of stiffness nonlinearity have emerged as among the effective solutions to overcome the performance limit of linear energy harvesting devices. However, up to now, researches on the nonlinear devices are only focusing on the ability to widen the bandwidth while the limit of employing linear transduction coefficient in a nonlinear system has yet to be heavily discussed. This paper investigates on the transduction coefficient for both linear and nonlinear systems of an electromagnetic energy harvesting device as a function of the excitation frequenc

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2

Vodovozov, A. M. "Nonlinear Pulse-Time Conversion in Radioisotope Devices: Analysis and Application Possibilities." Devices and Methods of Measurements 12, no. 2 (2021): 133–38. http://dx.doi.org/10.21122/2220-9506-2021-12-2-133-138.

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The paper considers the operation of radioisotope measuring devices under dynamic conditions, when the Poisson pulse flux at the output of the radiation detector becomes unsteady and the nonlinearity of the calibration curve of the device, the stochasticity of the radiation signal and the inertia of the meter significantly complicate the task of estimating the measured physical parameter. of the device and analysis of the possibility of its application for linearization of the characteristics of the device, increasing the speed of the devices and solving the measuring problem in real time.The

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3

Caetano, Virgilio J., and Marcelo A. Savi. "Nonlinear Dynamics of a Piezoelectric Bistable Energy Harvester Using the Finite Element Method." Applied Sciences 15, no. 4 (2025): 1990. https://doi.org/10.3390/app15041990.

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The conversion of ambient mechanical vibrational energy into electrical energy through piezoelectric devices has received an increasing attention in recent years. The main challenges are to develop efficient devices that operate over a wide frequency range, adapting to diverse environmental energy sources. This work presents a framework for the analysis of a nonlinear vibration-based energy harvesting devices combining the nonlinear finite element method with a reduced-order model, which provides a broader dynamical investigation. On this basis, a flexible tool is developed, allowing the multi

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4

Al-Mamoori, Oday. "Rectangular C-Device with Circular Transitions: Modelling Approaches and Development of an Equivalent Nonlinear Inelastic Spring for Seismic Analysis." Civil Engineering Beyond Limits 3, no. 3 (2022): 1–10. http://dx.doi.org/10.36937/cebel.2022.1579.

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Yield devices of “C” shape, known as C-devices, supplement the energy dissipation sources when installed in earthquake resistant structures. However, the explicit modelling of C-devices is time consuming. Accordingly, this paper presents a new reliable methodology to define and calibrate an equivalent uniaxial inelastic spring that effectively reproduces the expected hysteretic response of a C-device. The shape of the C-device under study resembles that of a rectangular portal frame with circular interior corner transitions to avoid stress concentration and to control the extension of the diss

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5

Cancellara, Donato, and Mario Pasquino. "A New Passive Seismic Control Device for Protection of Structures under Anomalous Seismic Events." Applied Mechanics and Materials 82 (July 2011): 651–56. http://dx.doi.org/10.4028/www.scientific.net/amm.82.651.

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In this paper, the possibility offered by the Base Isolation System, designed according to the strategy of limitation seismic force, in order to ensure a significant level of robustness to the isolated superstructure, has been analyzed. In according to the strategy of limitation seismic force, a new seismic isolator called HDHSI (High Damping Hybrid Seismic Isolator) is proposed, obtained by the assembly in series of a LRB (Lead Rubber Bearing) and a FS (Friction Slider) with high friction coefficient. The HDHSI device is in contrast to the R-FBI (Resilient-Friction Base Isolation) isolator an

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6

Narahara, Koichi. "Full-Wave Analysis of Traveling-Wave Field-Effect Transistors Using Finite-Difference Time-Domain Method." International Journal of Antennas and Propagation 2012 (2012): 1–9. http://dx.doi.org/10.1155/2012/948972.

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Nonlinear transmission lines, which define transmission lines periodically loaded with nonlinear devices such as varactors, diodes, and transistors, are modeled in the framework of finite-difference time-domain (FDTD) method. Originally, some root-finding routine is needed to evaluate the contributions of nonlinear device currents appropriately to the temporally advanced electrical fields. Arbitrary nonlinear transmission lines contain large amount of nonlinear devices; therefore, it costs too much time to complete calculations. To reduce the calculation time, we recently developed a simple mo

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7

Kochi, Ryota, and Mingcong Deng. "Multivariable Fractional-Order Controller Design for a Nonlinear Dual-Tank Device." Fractal and Fractional 8, no. 1 (2023): 27. http://dx.doi.org/10.3390/fractalfract8010027.

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Fractional calculus is defined by expanded integer order integration and differentiation. In this paper, multiple mathematical models of a nonlinear dual-tank device are precisely formulated by fractional calculus. Using the accurate model, a multivariable fractional-order controller is designed for nonlinear devices. The merits of the fractional-order design include: (1) control of multivariable nonlinearities, (2) compensation of uncertainties, and (3) elimination of coupling effects. Simulations and experiments are conducted to verify the precision of the fractional order models and the eff

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8

HORIASHCHENKO, S., K. HORIASHCHENKO, and G. DRAPAK. "DEVELOPMENT OF THE DIAGNOSTIC DEVICE USING SPECTRAL ANALYSIS." Herald of Khmelnytskyi National University. Technical sciences 283, no. 2 (2020): 88–93. https://doi.org/10.31891/2307-5732-2020-283-2-88-93.

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Traditional methods of analysis of physically realized signals, images and time series generated by complex (polymodal) time systems are mainly based on statistical methods, often on special correlation methods in their various variants. Prior to that, due to the statistical approach to the analysis of signals of the dynamic nature of the processes that generate them, as a rule, follows a different plan. And only a dynamic approach to the analysis of complex system characteristics for modern nonlinear dynamics allows us to consider the analysis of signals as a process of identification of dyna

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9

Yao, Ji, Junfeng Liu, Yujun Hu, and Qing Zhang. "Optimal Design and Analysis of Nonlinear Tuned Mass Damper System." Applied Sciences 13, no. 14 (2023): 8046. http://dx.doi.org/10.3390/app13148046.

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The tuned mass damper (TMD), as a representative passive control device, has been widely used in various fields such as mechanical vibration and civil engineering. In practical engineering applications, nonlinear characteristics of the TMD inevitably occur due to the installation of limiting devices or large displacements. Neglecting such nonlinearity may adversely affect the control performance of the TMD. Based on this situation, the parameters of the nonlinear tuned mass damper (NTMD) were analyzed, considering the linear and cubic nonlinear stiffness of the TMD, in order to improve its con

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10

Zhao, Gui Feng, Yu Hong Ma, Yong Shan Zhang, and Zuo Yu Sun. "Nonlinear Analysis of Hysteretic-Friction Isolation System with Displacement-Constraint Device." Applied Mechanics and Materials 90-93 (September 2011): 3173–79. http://dx.doi.org/10.4028/www.scientific.net/amm.90-93.3173.

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For the displacement-constraint device with hysteric-friction isolation system, the judgment condition of soft-collision between the isolation layer and displacement-constraint device is put forward, the motion equation of the isolation system in consideration of friction and soft-collision is established, the nonlinear analysis program is worked out, and several kinds of inflection points in the program are given and the corresponding processing method of the inflection points is introduced. The nonlinear response analysis of the isolation system results indicate the displacement-restraint de

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11

Hoyos Velasco, Carlos Ildefonso, Fredy Edimer Hoyos Velasco, and Julian M. Londoño Monsalve. "Nonlinear Dynamics Analysis of a Dissipation System with Time Delay." International Journal of Bifurcation and Chaos 28, no. 06 (2018): 1830018. http://dx.doi.org/10.1142/s0218127418300185.

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This work is concerned with the bifurcational analysis of nonlinear dissipative systems affected by time delay. This issue typically arises when testing highly nonlinear energy dissipation devices, commonly used in vibration control of civil structures, and carried out experimentally via a hybrid technique known as Real-Time Dynamic Substructuring (RTDS) simulation. Unfortunately, the RTDS simulation is affected by time delay in the control feedback loop due to the actuator response, sensor reading and numerical processing. In essence, this paper focuses on studying the nonlinear dynamics indu

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12

Ke, Changhong, Horacio D. Espinosa, and Nicola Pugno. "Numerical Analysis of Nanotube Based NEMS Devices — Part II: Role of Finite Kinematics, Stretching and Charge Concentrations." Journal of Applied Mechanics 72, no. 5 (2005): 726–31. http://dx.doi.org/10.1115/1.1985435.

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In this paper a nonlinear analysis of nanotube based nano-electromechanical systems is reported. Assuming continuum mechanics, the complete nonlinear equation of the elastic line of the nanotube is derived and then numerically solved. In particular, we study singly and doubly clamped nanotubes under electrostatic actuation. The analysis emphasizes the importance of nonlinear kinematics effects in the prediction of the pull-in voltage of the device, a key design parameter. Moreover, the nonlinear behavior associated with finite kinematics (i.e., large deformations), neglected in previous studie

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13

Nishida, Takashi, Takashi Nozaka, Takuya Tsuchikawa, et al. "Analysis of Nonlinear Dielectric Characteristics of (Ba, Sr)TiO₃ Thin Films and their Frequency Conversion Application." Key Engineering Materials 388 (September 2008): 183–86. http://dx.doi.org/10.4028/www.scientific.net/kem.388.183.

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(Ba,Sr)TiO3 (BST) thin films have been investigated because of significant interest in device applications of their nonlinear dielectric properties such as in frequency tunable devices. We have investigated frequency conversion devices using BST films as new nonlinear devices, such as frequency mixers and multipliers. In this paper, we report the evaluation of nonlinear properties of various capacitors, and the experimental equation of the properties and the equivalent circuit model for frequency converters were established. A frequency multiplier using the BST film capacitor was fabricated, a

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14

Xu, R., and K. Komvopoulos. "A Reduced-Order Dynamic Model of Nonlinear Oscillating Devices." Journal of Dynamic Systems, Measurement, and Control 129, no. 4 (2007): 514–21. http://dx.doi.org/10.1115/1.2745858.

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A reduced-order dynamic model is presented for nonlinear devices subjected to in-plane oscillatory motion. Comparisons between numerical and finite element results demonstrate that the nonlinear behavior of a planar resonator can be predicted accurately by the derived dynamic model with significantly less computation. Simulation results illustrate the effects of nonlinear stiffness, damping ratio, electrostatic driving force, and device dimensions on the nonlinear dynamic behavior. The analysis yields two possible stable responses, depending on the initial rotation angle and rotation rate. The

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15

SATO, Shogo, and Yoshihiro TAKAHASHI. "Analysis of reduction device with nonlinear behavior on vertical vibration." Proceedings of the Tecnology and Society Conference 2024 (2024): 301. https://doi.org/10.1299/jsmetsd.2024.301.

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16

Wang, Aihui, Zhengxiang Ma, and Shengjun Wen. "Operator-Based Robust Nonlinear Control Design and Analysis of a Semiconductor Refrigeration Device." Journal of Robotics and Mechatronics 29, no. 6 (2017): 1065–72. http://dx.doi.org/10.20965/jrm.2017.p1065.

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In this paper, an operator-based robust perfect control for nonlinear semiconductor refrigeration device with uncertainties and perturbation is considered. For the research about the properties of the semiconductor refrigeration, an aluminum plate with Peltier device is very representative. Therefore, the perfect tracking control performance of semiconductor refrigeration can be investigated by using this aluminum plate with Peltier device. Moreover, the operator based robust right coprime factorization (RRCF) approach is convenient in analysis and designing control system of nonlinear plant w

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17

Yan, Haibo, and Ls Yong. "The Local Stability of Solutions for a Nonlinear Equation." Abstract and Applied Analysis 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/781813.

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The approach of Kruzkov’s device of doubling the variables is applied to establish the local stability of strong solutions for a nonlinear partial differential equation in the spaceL1(R)by assuming that the initial value only lies in the spaceL1(R)∩L∞(R).

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18

YAMAMOTO, TADAAKI, YOHEI OHKAWA, TOMOYUKI KITAMOTO, TOMOYUKI NAGAYA, and SHIGETOSHI NARA. "BIFURCATION PHENOMENA IN COUPLED DYNAMIC SELF-ELECTRO-OPTIC-EFFECT DEVICES." International Journal of Bifurcation and Chaos 16, no. 12 (2006): 3717–25. http://dx.doi.org/10.1142/s0218127406017117.

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Dynamic phenomena in a device network consisting of Dynamic Self-Electro-Optic-Effect Devices (D-SEED) are theoretically predicted and discussed via phenomenological and numerical methods, where each D-SEED element shows nonlinear oscillatory behavior. Analysis is based on a phenomenological model for photocarriers proposed in previous works by one of the authors and it treats a set of diffusively coupled nonlinear rate equations for the photocarrier density of each D-SEED.

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19

Vinogradova, Irina L., Azat R. Gizatulin, Ivan K. Meshkov, and Aida R. Ahmethanova. "METHODS OF OBTAINING QUADRATIC NONLINEARITY AND RADIO-PHOTONIC CONVERSION DEVICE." Electrical and Data Processing Facilities and Systems 21, no. 2 (2025): 142–51. https://doi.org/10.17122/1999-5458-2025-21-2-142-151.

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Relevance The research is devoted to the analysis of quadratic nonlinear optical materials and structures suitable for generating difference frequencies in the terahertz and subterahertz ranges. The use of such materials opens up new possibilities for the creation of efficient optical-radio converters. Aim of research To propose the principle for constructing a nonlinear optical-radio converter based on an optical focon. Research methods The mathematical model of the process of propagation and nonlinear interaction of waves inside the focon is used. Results The article analyzes materials with

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20

Golovkov, Alexander A. "Parametrical synthesis of various radio devices with the set quantity of cascades of type «the nonlinear part – the complex two-port network»." Physics of Wave Processes and Radio Systems 26, no. 3 (2023): 40–51. http://dx.doi.org/10.18469/1810-3189.2023.26.3.40-51.

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Background. Presence of possibility of analytical definition of a part of parametres of various radio devices, optimum by criterion of maintenance of preset values of modules and phases of transfer functions on necessary quantity of frequencies, considerably reduces time of numerical optimisation of other part of parametres by criterion of formation demanded PFC and FFC in a strip of frequencies. Till now such problems dared concerning radio devices only with one cascade of type «a nonlinear part - the coordination the device» or «the coordination the device - a nonlinear part». In quality dev

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21

Liu, Chin Chia. "Stability and Dynamic Analysis of the Electrostatic MEMS Actuators." Applied Mechanics and Materials 479-480 (December 2013): 431–35. http://dx.doi.org/10.4028/www.scientific.net/amm.479-480.431.

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The nonlinear dynamic behavior of the micro actuators is analyzed in this paper. In general, analysis of the electrostatic device is quite difficult and complicated due to the electrostatic coupling effect and the nonlinear electrostatic force. In this study, a hybrid method for the micro-structure system, which combines the differential transformation and finite difference approximation techniques, is used to overcome the nonlinear electrostatic coupling phenomenon. The analysis takes account of the electrostatic coupling effect, the fringing field effect, the residual stress, the nonlinear e

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22

Li, Shuijin, Masoud Hayatdavoodi, and R. Cengiz Ertekin. "On Wave-Induced Elastic Deformations of a Submerged Wave Energy Device." Journal of Marine Science and Application 19, no. 3 (2020): 317–38. http://dx.doi.org/10.1007/s11804-020-00142-6.

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Abstract Structural integrity has remained a challenge for design and analysis of wave energy devices. A difficulty in assessment of the structural integrity is often laid in the accurate determination of the wave-induced loads on the wave energy devices and the repones of the structure. Decoupled hydroelastic response of a submerged, oscillating wave energy device to extreme nonlinear wave loads is studied here. The submerged wave energy device consists of an oscillating horizontal disc attached to a direct-drive power take-off system. The structural frame of the wave energy device is fixed o

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23

Bernardin, Frederic, and Arnaud Munch. "Modeling and optimizing a road de-icing device by a nonlinear heating." ESAIM: Mathematical Modelling and Numerical Analysis 53, no. 3 (2019): 775–803. http://dx.doi.org/10.1051/m2an/2018056.

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In order to design a road de-icing device by heating, we consider in the one dimensional setting the optimal control of a parabolic equation with a nonlinear boundary condition of the Stefan–Boltzmann type. Both the punctual control and the corresponding state are subjected to a unilateral constraint. This control problem models the heating of a road during a winter period to keep the road surface temperature above a given threshold. The one-dimensional modeling used in this work is a first step of the modeling of a road heating device through the circulation of a coolant in a porous layer of

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24

Jauhari, M. Firman, Arie Febry Fardheny, and Dr Eng Irfan Prasetia. "Nonlinear Time History Analysis of Anti Seismic Device on Highway Bridges." International Journal of Advances in Scientific Research and Engineering 06, no. 06 (2020): 33–39. http://dx.doi.org/10.31695/ijasre.2020.33833.

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25

Shi, Dongyang, and Peng Jian. "Superconvergence analysis of finite element method for nonlinear semiconductor device problem." Computers & Mathematics with Applications 138 (May 2023): 1–22. http://dx.doi.org/10.1016/j.camwa.2023.02.008.

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26

Hu, Zhong-Wei, Zhao-Dong Xu, Yun Tian, et al. "Test, Modeling, and Vibration Control of a Novel Viscoelastic Multi-Dimensional Earthquake Isolation and Mitigation Device." Actuators 13, no. 12 (2024): 481. http://dx.doi.org/10.3390/act13120481.

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Earthquakes contain complex components in both the horizontal and vertical directions. However, most vibration control strategies work only in a single direction. The existing multi-dimensional isolation devices usually have complex designs and low damping ratios; hence, the stability of structures that incorporate the devices is currently insufficient. This study designs a novel multi-dimensional isolation and mitigation device based on viscoelastic damping technology (VE-MDIMD). The device consists of a core bearing and several cylindrical dampers, providing vibration control capacity in bot

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27

Golovkov, Alexander A. "Parametrical synthesis of various radio devices with the set quantity of identical cascades of type «the nonlinear part – the mixed two-port network»." Physics of Wave Processes and Radio Systems 27, no. 3 (2024): 47–60. http://dx.doi.org/10.18469/1810-3189.2024.27.3.47-60.

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Background. Presence of possibility of analytical definition of a part of parametres of various radio devices, optimum by criterion of maintenance of preset values of modules and phases of transfer functions on necessary quantity of frequencies, considerably reduces time of numerical optimisation of other part of parametres by criterion of formation demanded frequency response and phase response in a strip of frequencies. Till now such problems dared concerning radio devices only with one cascade of type «a nonlinear part - the coordination the device» or «the coordination the device – a nonli

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28

Golovkov, Alexander A. "Parametrical synthesis of various radio devices with the set quantity of identical cascades of type «the nonlinear part – the resistive two-port network»." Physics of Wave Processes and Radio Systems 27, no. 2 (2024): 56–68. http://dx.doi.org/10.18469/1810-3189.2024.27.2.56-68.

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Background. Presence of possibility of analytical definition of a part of parametres of various radio devices, optimum by criterion of maintenance of preset values of modules and phases of transfer functions on necessary quantity of frequencies, considerably reduces time of numerical optimisation of other part of parametres by criterion of formation demanded PFC and FFC in a strip of frequencies. Till now such problems dared concerning radio devices only with one cascade of type «a nonlinear part – the coordination the device» or «the coordination the device – a nonlinear part». In quality сог

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29

Golovkov, Alexander A. "Parametrical synthesis of various radio devices with the set quantity of cascades of type «the complex two-port network – the nonlinear part»." Physics of Wave Processes and Radio Systems 26, no. 3 (2023): 20–31. http://dx.doi.org/10.18469/1810-3189.2023.26.3.20-31.

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Background. Presence of possibility of analytical definition of a part of parameters of various radio devices, optimum by criterion of maintenance of preset values of modules and phases of transfer functions on necessary quantity of frequencies, considerably reduces time of numerical optimization of other part of parameters by criterion of formation demanded PFC and FFC in a strip of frequencies. Till now such problems dared concerning radio devices only with one cascade of type a nonlinear part - the coordination the device or the coordination the device - a nonlinear part. In quality of devi

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30

Golovkov, Alexander A. "Parametrical synthesis of various radio devices with the set quantity of cascades of type «the mixed two-port network – nonlinear part»." Physics of Wave Processes and Radio Systems 27, no. 1 (2024): 48–60. http://dx.doi.org/10.18469/1810-3189.2024.27.1.48-60.

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Background. Presence of possibility of analytical definition of a part of parametres of various radio devices, optimum by criterion of maintenance of preset values of modules and phases of transfer functions on necessary quantity of frequencies, considerably reduces time of numerical optimisation of other part of parametres by criterion of formation demanded PFC and FFC in a strip of frequencies. Till now such problems dared concerning radio devices only with one cascade of type «a nonlinear part - the coordination the device» or «the coordination the device - a nonlinear part». In quality coo

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31

Golovkov, Alexander A. "Parametrical synthesis of various radio devices with the set quantity of cascades of type «the resistive two-port network – the nonlinear part»." Physics of Wave Processes and Radio Systems 27, no. 1 (2024): 35–47. http://dx.doi.org/10.18469/1810-3189.2024.27.1.35-47.

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Background. Presence of possibility of analytical definition of a part of parametres of various radio devices, optimum by criterion of maintenance of preset values of modules and phases of transfer functions on necessary quantity of frequencies, considerably reduces time of numerical optimisation of other part of parametres by criterion of formation demanded PFC and FFC in a strip of frequencies. Till now such problems dared concerning radio devices only with one cascade of type «a nonlinear part - the coordination the device» or «the coordination the device - a nonlinear part». In quality the

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32

Liu, Tao, Aiqun Li, and Hengyuan Zhang. "Optimal Design and Dynamic Analysis of a New Quasi-Zero-Stiffness Isolation Device." Structural Control and Health Monitoring 2023 (July 18, 2023): 1–17. http://dx.doi.org/10.1155/2023/9756226.

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Compared with the linear isolation system, the quasi-zero-stiffness (QZS) nonlinear isolation system has the characteristics of high static stiffness and low dynamic stiffness, which has better low-frequency vibration isolation performance. However, most of the existing QZS isolators only consider the quasi-zero-stiffness characteristic at the static equilibrium position achieved by the parallel connection of positive and negative stiffness structures. To optimize the isolation performance of the QZS system, a new isolation device based on the parallel connection of oblique springs and vertica

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Li, Lu-yu, and Tianjiao Zhang. "Analytical analysis for the design of nonlinear tuned mass damper." Journal of Vibration and Control 26, no. 9-10 (2020): 646–58. http://dx.doi.org/10.1177/1077546319889840.

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A tuned mass damper is a passive control device that has been widely used in aerospace, mechanical, and civil engineering as well as many other fields. Tuned mass dampers have been studied and improved over the course of many years. In practical engineering applications, a tuned mass damper inevitably produces some nonlinear characteristics due to the large displacement and the use of the limiting devices, but this nonlinearity is often neglected. The simulation results in this study confirm that neglecting the nonlinearity in the design process can produce adverse effects on the control perfo

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Azizi, Saber, Hadi Madinei, Javad Taghipour, and Hassen M. Ouakad. "Bifurcation analysis and nonlinear dynamics of a capacitive energy harvester in the vicinity of the primary and secondary resonances." Nonlinear Dynamics 108, no. 2 (2022): 873–86. http://dx.doi.org/10.1007/s11071-022-07271-3.

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AbstractThe objective of the present study is to examine the effect of nonlinearity on the efficiency enhancement of a capacitive energy harvester. The model consists of a cantilever microbeam underneath which there is an electret layer with a surface voltage, which is responsible for the driving energy. The packaged device is exposed to unwanted harmonic mechanical excitation. The microbeam undergoes mechanical vibration, and accordingly, the energy is harvested throughout the output electric circuit. The dynamic formulation accounts for nonlinear curvature, inertia, and nonlinear electrostat

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Hejazi, Farzad, Samira Jilani Kojouri, Jamal Noorzaei, M. S. Jaafar, W. A. Thanoon, and A. Ali Abang Abdullah. "Inelastic Seismic Response of RC Building with Control System." Key Engineering Materials 462-463 (January 2011): 241–46. http://dx.doi.org/10.4028/www.scientific.net/kem.462-463.241.

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Conventional buildings are mainly designed based on elastic analysis of structures subjected to moderate earthquakes. In this case, the seismic forces are much smaller than the forces introduced by strong ground motions with the considered structural behavior going to nonlinear response during these severe earthquakes. Improving the earthquake resistance of reinforced concrete buildings using a variety of earthquake energy dissipation systems has received considerable attention in recent years by civil engineers. In the present study, a nonlinear computational scheme was developed to predict t

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TAFFOTI YOLONG, V. Y., and P. WOAFO. "DYNAMICS OF ELECTROSTATICALLY ACTUATED MICRO-ELECTRO-MECHANICAL SYSTEMS: SINGLE DEVICE AND ARRAYS OF DEVICES." International Journal of Bifurcation and Chaos 19, no. 03 (2009): 1007–22. http://dx.doi.org/10.1142/s0218127409023421.

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The dynamical behavior of micro-electro-mechanical systems (MEMS) with electrostatic coupling is studied. A nonlinear modal analysis approach is applied to decompose the partial differential equation into a set of ordinary differential equations. The stability analysis of the equilibrium points is investigated. The amplitudes of the harmonic oscillatory states in the triple resonant states are obtained and discussed. Chaotic behavior is investigated using bifurcations diagram and the largest Lyapunov exponent. The dynamics of the MEMS with multiple functions in series is also investigated as w

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Opreni, Andrea, Nicolò Boni, Roberto Carminati, and Attilio Frangi. "Analysis of the Nonlinear Response of Piezo-Micromirrors with the Harmonic Balance Method." Actuators 10, no. 2 (2021): 21. http://dx.doi.org/10.3390/act10020021.

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In this work, we address the simulation and testing of MEMS micromirrors with hardening and softening behaviour excited with patches of piezoelectric materials. The forces exerted by the piezoelectric patches are modelled by means of the theory of ferroelectrics developed by Landau–Devonshire and are based on the experimentally measured polarisation hysteresis loops. The large rotations experienced by the mirrors also induce geometrical nonlinearities in the formulation up to cubic order. The solution of the proposed model is performed by discretising the device geometry using the Finite Eleme

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Gebrel, Ibrahim F., and Samuel F. Asokanthan. "Influence of System and Actuator Nonlinearities on the Dynamics of Ring-Type MEMS Gyroscopes." Vibration 4, no. 4 (2021): 805–21. http://dx.doi.org/10.3390/vibration4040045.

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This study investigates the nonlinear dynamic response behavior of a rotating ring that forms an essential element of MEMS (Micro Electro Mechanical Systems) ring-based vibratory gyroscopes that utilize oscillatory nonlinear electrostatic forces. For this purpose, the dynamic behavior due to nonlinear system characteristics and nonlinear external forces was studied in detail. The partial differential equations that represent the ring dynamics are reduced to coupled nonlinear ordinary differential equations by suitable addition of nonlinear mode functions and application of Galerkin’s procedure

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Tuan, Doan Van, Nguyen Luong Thien, and Pham Van Bach Ngoc. "Dynamic Analysis and Design of an SMCNN of a 6-DOF Parallel Mechanisms using Translation Driver Motor." International Journal of Emerging Technology and Advanced Engineering 13, no. 1 (2023): 73–81. http://dx.doi.org/10.46338/ijetae0123_09.

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—Recently, many technological improvement apply in the discovery of various designs of haptic devices. Several mechanism structures including serial, parallel, and hybrid-kinematic manipulators can be considered for making a haptics device. The most successful haptic mechanisms are parallel-type, because of low moving inertia, large force reflection, and high stiffness. This research shows the 6-DOF parallel haptics device based on the parallel mechanism using a translation driver motor mounted on each leg. Firstly, we introduce a 6-DOF parallel mechanism using a translation driver motor hapti

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Zhao, C. Y., P. Y. Chen, and C. M. Zhang. "Numerical analysis of Bragg grating-based slot-micro-ring coupling resonator system for electromagnetically-induced transparency-like effect." Modern Physics Letters B 34, no. 28 (2020): 2050307. http://dx.doi.org/10.1142/s0217984920503078.

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We propose a novel bio-sensor structure composed of double sided-wall Bragg gratings and dual-slot-micro-ring waveguides. The slot waveguide is a better choice to interact the bio-material under investigation with the propagating light with in the slot region. The incident light field propagates clockwise through the slot micro-ring resonator, the reflection light field propagates counterclockwise in the slot Bragg grating. By optimizing the geometric parameters of the device, the spectral response is tailored to obtain a sharp resonant peak simulated by the finite- difference time-domain (FDT

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Gourary, M. M., S. G. Rusakov, S. L. Ulyanov, M. M. Zharov, and B. J. Mulvaney. "Circuit Distortion Analysis Based on the Simplified Newton's Method." Journal of Electrical and Computer Engineering 2011 (2011): 1–11. http://dx.doi.org/10.1155/2011/540305.

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A new computational technique for distortion analysis of nonlinear circuits is presented. The new technique is applicable to the same class of circuits, namely, weakly nonlinear and time-varying circuits, as the periodic Volterra series. However, unlike the Volterra series, it does not require the computation of the second and third derivatives of device models. The new method is computationally efficient compared with a complete multitone nonlinear steady-state analysis such as harmonic balance. Moreover, the new technique naturally allows computing and characterizing the contributions of ind

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Sung, Deokyong. "Nonlinear Analysis Method for Serviceability Investigation of Bridge Deck Ends with a Concrete Slab Track." Advances in Civil Engineering 2018 (November 15, 2018): 1–9. http://dx.doi.org/10.1155/2018/6075686.

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In this study, a nonlinear analysis method was proposed to evaluate the serviceability review of a rail fastening system on concrete slab track at railway bridge ends. The serviceability review of the end deck is time-consuming in that it is necessary to calculate the force of fasteners; also, the design is complex because of the many girders, fasteners, and loads. In addition, there is also a case in which a special, expensive fastening device is installed because the stiffness of the rail fastening device is assumed to be linear, and excessive design results are produced by the linear analys

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Markevich, V. E., and V. V. Legkostup. "Analytical design of the missile control device to intercept aerodynamic target." «System analysis and applied information science», no. 1 (July 5, 2019): 41–49. http://dx.doi.org/10.21122/2309-4923-2019-1-41-49.

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The analytical method of synthesis of devices for joint optimal estimation of parameters and control of the state of nonlinear dynamic stochastic objects is considered. A brief review of the existing and promising methods of missile guidance, as well as a comparative description of the advantages and disadvantages. Methods of improving accuracy and jamming-resistance methods of guidance, one of which is an approach based on joint estimation and state control of nonlinear object with random driving and interfering influences.The main directions of research on this subject, including statistical

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Dequesnes, Marc, Zhi Tang, and N. R. Aluru. "Static and Dynamic Analysis of Carbon Nanotube-Based Switches." Journal of Engineering Materials and Technology 126, no. 3 (2004): 230–37. http://dx.doi.org/10.1115/1.1751180.

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In this paper, we report on molecular dynamics (MD), continuum (based on linear and nonlinear beam theories) and combined molecular dynamics/continuum simulation of carbon nanotube based nanoelectromechanical switches. As a prototype device, we study the pull-in voltage characteristics of a nanoelectromechanical switch made of a suspended single wall nanotube over a ground plane. The various simulations (MD, continuum and combined MD/continuum) have been performed accounting for the electrostatic and van der Waals forces between the nanotube and the ground plane. The results from the nonlinear

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Gan, Buntara Sthenly, Susumu Nakamura, Noriaki Sento, and Kosuke Ito. "Friction-Type Seismic Isolation Device of Steel Pile Foundation in Shaking Table Tests and its Numerical Simulations." Applied Mechanics and Materials 845 (July 2016): 233–39. http://dx.doi.org/10.4028/www.scientific.net/amm.845.233.

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Pile foundation equipped with a low-cost frictional type seismic isolation device is investigated. The frictional mechanism results from a contact between two surfaces of a half steel sphere mounted on the pile cap and the corresponding inner steel sphere embedded in the footing of upper structure. To verify the mechanical behaviors of the pile with frictional type seismic isolation device, tests, and its numerical simulations have been performed. The rotational friction device is found to be very effective in releasing the internal energy transferred from the pile foundation to the upper stru

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Pugno, N., C. H. Ke, and H. D. Espinosa. "Analysis of Doubly Clamped Nanotube Devices in the Finite Deformation Regime." Journal of Applied Mechanics 72, no. 3 (2004): 445–49. http://dx.doi.org/10.1115/1.1875452.

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In this paper, a nonlinear theory applicable to the design of nanotube based devices is presented. The role of finite kinematics for a doubly clamped nanotube device is investigated. In particular, we analyze the continuous deformation and instability (pull in) of a clamped-clamped nanotube suspended over an electrode from which a potential differential is imposed. The transformation of an applied voltage into a nanomechanical deformation indeed represents a key step toward the design of innovative nanodevices. Likewise, accurate prediction of pull-in/pull-out voltages is highly needed. We sho

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Gu, Ji, Wei Wang, Rong Yin, Chinh V. Truong, and Bibhu Prasad Ganthia. "Complex circuit simulation and nonlinear characteristics analysis of GaN power switching device." Nonlinear Engineering 10, no. 1 (2021): 555–62. http://dx.doi.org/10.1515/nleng-2021-0046.

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Abstract To overcome the problem of energy losses in the electrical circuits and to improve the energy conversion efficiency, it is necessary to increase the power switch frequency and reduce the open resistance of the power switch. Moreover, based on energy saving, failure protection, circuit design and other aspects of the research of enhanced devices are also essential, a new static and dynamic model of GaN power transistor is proposed, and the steady-state and dynamic characteristics of GaN power transistors are simulated and tested. The GaN power transistor used in the test has a constant

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Karthikeyan, Dr A., N. Pavithra, S. Priyadharshini, P. Sabarithini, and R. Thavaseela. "Artificial Intelligence-Based Control for Reactive Power of Electric Drive System for Pump." International Journal for Research in Applied Science and Engineering Technology 10, no. 5 (2022): 3006–10. http://dx.doi.org/10.22214/ijraset.2022.43030.

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Abstract: This paper affords an impression device implementation found out for the electrical force device of a pump station supported analysis, this country of the control approach for the electrical force device of a pump station, and present challenges. The operation’s findings display that this type of control plan is feasible , which with the help of using incorporating computing , it'll successfully keep guide diligence while conjointly sleuthing pump station failures, thence growing the voltage pleasant of the power provide device. A nonlinear proportional operation approaches the trans

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RASHMI, L. BEDNARZ, L. GENCE, et al. "ANALYSIS OF BANDWIDTH AND NONLINEAR EFFECTS IN InGaAs-BASED BALLISTIC NANODEVICES FOR APPLICATIONS UP TO THz RANGE." International Journal of Nanoscience 04, no. 05n06 (2005): 1033–38. http://dx.doi.org/10.1142/s0219581x05004030.

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Analysis of nonlinear effects in InAlAs/InGaAs -based channels and three-terminal ballistic junctions (TBJs) is performed for applications up to THz range. Results show that InGaAs -based channels designed for ballistic operation exhibit high intrinsic cut-off frequency (fT ~ 10 THz ). Nonlinear effects in TBJs, which result from device geometry and space charge distribution, show good qualitative agreement with published results.

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Gospodinov, Mitko. "Investigation of the Application of New Mathematical Methods for the Analysis of Cardiac Data." Innovative STEM Education 2, no. 1 (2020): 7–12. http://dx.doi.org/10.55630/stem.2020.0201.

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The article shows the results of the implementation of the first stage of the project "Study of the application of new mathematical methods for analysis of cardiac data", funded by the Research Fund. The results are related to the creation of a portable information system for individual monitoring of the cardiovascular system, which includes a portable device for recording photoplethysmographic (PPG) signals and software for processing, mathematical analysis and assessment of heart rate variability. An important advantage of the portable device is the ability to constantly monitor and record t

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