Nonlinear Dynamic Analysis of Macrofiber Composites Laminated Shells

Guo, Xiaoqin; Liu, Dameng; Zhang, Wei; Sun, Lin; Chen, Shuping

doi:10.1155/2017/4073591

Cited by 7 publications

(7 citation statements)

References 30 publications

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“…Then, taking all these derived expressions in (8a)-(8e), (9a)-(9f) hooked on (6a)-(6e), then using the Galerkin technique, we got a two-degree-of- After adding PD-controllers to equtaion (11), the following modified normalized equations of motion over the framework [1] is as follows as presented in figure 3 2 )   are the non-linear control forces.…”

Section: Derivation Equations Of Mfc Laminated Shell Motionmentioning

confidence: 99%

“…Moreover, Prasath and Arockiarajan [13,14] measured the impact of holding layer volume division on the effective thermo-electro-elastic constants of both d 33 and d 31 -type MFCs by utilizing the finite element method and experiments. Furthermore, Guo et al [1,15] studied nonlinear energetic investigation of MFC shells on the unmanned aerial vehicle (UAV) wings structures. Also, the result of the electric field, external excitation force and nonlinear parameters acts on the framework stability is examined under 1:1 internal resonance.…”

Section: Introductionmentioning

confidence: 99%

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Act of nonlinear proportional derivative controller for MFC laminated shell

Bauomy

EL-Sayed

2020

Phys. Scr.

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This manuscript presents connect a Proportional-Derivative (PD) controller with a macro-fiber composite (MFC) laminated shell system. Nonlinear equations of the MFC laminated shell have been established. The simultaneous resonance case considered as worst resonance. The main motivation of this research is applying a suitable vibration control to reduce or diminish the high vibration caused by the model. So, we used here PD controller in controlling the behavior MFC laminated shell structure. The goal of using the PD controller is to increase the system stability by improving control since it has an ability to predict the future error of the framework response. This control method makes stability increased, maximum peak overshoot decreased, settling time decreases. This controller is applied to recover the framework transient response. A second-order approximate solution has gained via applying multiple time scale perturbation (MTSP) technique. Every expected resonance case at this approximation order is extracted. After adding the PD-controller of the current framework, it eliminates the vibration amplitudes of the considered structure. Frequency (angular speed) response curves examined at special uncontrolled and controlled coefficients of the system. Finally, the conclusion shows a high efficiency of the measured control algorithm for eliminating vibrations of the modified system. A comparison between other approaches control algorithms had been prepared. The results are compared with the numerical simulations, and this shows a good verification for the approximate solution and for the control algorithm used in this manuscript. A comparison with earlier available papers is involved at the end.

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Section: Derivation Equations Of Mfc Laminated Shell Motionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Act of nonlinear proportional derivative controller for MFC laminated shell

Bauomy

EL-Sayed

2020

Phys. Scr.

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“…In addition to the bending effect, the finite element formula should also include the torsion and tensile effects to reflect the large deformation effect [27,28]:…”

Section: Nonlinear Fem For Beam Elementsmentioning

confidence: 99%

Application and Analysis of an Ionic Liquid Gel in a Soft Robot

Zhang

Wang

et al. 2019

Advances in Materials Science and Engineering

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Due to their light weight, flexibility, and low energy consumption, ionic electroactive polymers have become a hotspot for bionic soft robotics and are ideal materials for the preparation of soft actuators. Because the traditional ionic electroactive polymers, such as ionic polymer-metal composites (IPMCs), contain water ions, a soft actuator does not work properly upon the evaporation of water ions. An ionic liquid polymer gel is a new type of ionic electroactive polymer that does not contain water ions, and ionic liquids are more thermally and electrochemically stable than water. These liquids, with a low melting point and a high ionic conductivity, can be used in ionic electroactive polymer soft actuators. An ionic liquid gel (ILG), a new type of soft actuator material, was obtained by mixing 1-butyl-3-methylimidazolium tetrafluoroborate (BMIMBF4), hydroxyethyl methacrylate (HEMA), diethoxyacetophenone (DEAP) and ZrO2 and then polymerizing this mixture into a gel state under ultraviolet (UV) light irradiation. An ILG soft actuator was designed, the material preparation principle was expounded, and the design method of the soft robot mechanism was discussed. Based on nonlinear finite element theory, the deformation mechanism of the ILG actuator was deeply analyzed and the deformation of the soft robot when grabbing an object was also analyzed. A soft robot was designed with the soft actuator as the basic module. The experimental results show that the ILG soft robot has good driving performance, and the soft robot can grab a 105 mg object at an input voltage of 3.5 V.

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“…Lezgy-Nazargah [24] estimated the effective coupled thermo-electro-elastic material coefficients of three-phase piezoelectric structural fiber composites under multiple loading conditions. Guo et al [25] established the nonlinear dynamical model of a multilayer MFC laminated shell and studied the effects of transverse excitations and piezoelectric properties on the dynamic stability of the structure.…”

Section: Several Analytical Models Have Been Formulated To Predict Thmentioning

confidence: 99%

Nonlinear dynamic analysis of composite piezoelectric plates with graphene skin

Guo

Jiang

Zhang

et al. 2018

Composite Structures

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This paper studies the nonlinear dynamical characteristic of a composite plate made of new three-phase materials which include the graphene (GP) combined with macro fiber composite (MFC) in the polymer. The GP is supposed to be uniformly dispersed in the upper and lower surfaces of the composite laminated plate with 1-3 mode of macro fiber. The cross-ply MFC composite laminated plate is subjected to transversal excitations. The constitutive laws for the MFC-GP composite material are obtained based on the rule of mixture for multi-components of composite material. The nonlinear governing equations of motion of the MFC-GP plate are derived by Hamilton's principle and the von Kármán geometrical kinematics. Galerkin's approach is employed to discretize the partial differential governing equations into a two-degree-of-freedom nonlinear system. Then, stability analysis is conducted to investigate the influences of various parameters on natural frequencies of the MFC-GP plate, with a particular focus on the effects of GP volume fraction, initial conditions and damping coefficients on nonlinear vibration behaviours of the composite plate.

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Nonlinear Dynamic Analysis of Macrofiber Composites Laminated Shells

Cited by 7 publications

References 30 publications

Act of nonlinear proportional derivative controller for MFC laminated shell

Act of nonlinear proportional derivative controller for MFC laminated shell

Application and Analysis of an Ionic Liquid Gel in a Soft Robot

Nonlinear dynamic analysis of composite piezoelectric plates with graphene skin

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