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Manoj Narwariya

Bio: Manoj Narwariya is an academic researcher from Sir Padampat Singhania University. The author has contributed to research in topics: Finite element method & Vibration. The author has an hindex of 1, co-authored 7 publications receiving 1 citations.

Papers
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Journal ArticleDOI
TL;DR: In this paper, a numerical study of free vibration and harmonics analysis of anti-symmetric cross-ply laminated composite plates is presented, where the effect of damping factor, modulus ratio and orientation on harmonic analysis is also investigated.

2 citations

DOI
04 Mar 2019
TL;DR: In this article, the effects of thickness ratios and diameter ratios on natural frequencies and resonance point for isotropic annular plates have been investigated in order to determine the frequency parameters and resonance amplitude.
Abstract: The vibration and harmonic response of isotropic annular plates have been examined in order to determine the frequency parameters and resonance amplitude. The employment of finite element is made in this study. The effects of thickness ratios and diameter ratios are investigated on natural frequencies and resonance point for isotropic annular plates. Different combinations of three types of boundary conditions i.e. clamped-clamped, clamped-free and free-clamped end conditions are considered at the inner and outer edges of the plate. The resonance amplitudes are also obtained for various damping ratios for same natural frequency. Verification of the accuracy of the results is made using the necessary convergence analysis and checked with available literature. From the comparison study, it has been demonstrated that the presently proposed model is efficient for solving the annular plate structure since the numerical results obtained in the present study are in good accordance with the published ones.
Book ChapterDOI
01 Jan 2021
TL;DR: In this paper, an FEM technique is adopted for modal and harmonic analyses of circular plates with center as well as eccentric holes, and the effect of increasing eccentric holes on frequency parameters and critical amplitude are also investigated.
Abstract: Circular isotropic plates with number of holes are employed in various engineering application, especially in mechanical parts like gears, turbine wheels, circular saws, disc brakes, etc. In this study, an FEM technique is adopted for modal and harmonic analyses of circular plates with centre as well as eccentric holes. The steel material is used to define properties. The effect of increasing eccentric holes on frequency parameters and critical amplitude are also investigated. The element “Solid 185”, appropriate for modelling three-dimensional solid components, is used to mesh the model. The results are validated employing the required convergence analysis and checked with available literatures. From the comparison study, it has been demonstrated that the presently adopted model is suitable for analysing the annular plate structure, since the numerical results obtained in the present study are in good accordance with the published ones.

Cited by
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Journal ArticleDOI
TL;DR: In this article, a comprehensive vibrational behavior analysis is performed on anti-symmetric laminated composite plates resting on visco-elastic foundations undergoing thermal effects, where the governing equations of motion are developed through Hamilton's principle and Reddy's plate theory as higher-order shear deformation theory.

14 citations

Journal ArticleDOI
TL;DR: In this article , a multi-objective optimization model for the anti-symmetric cylindrical shell in the bionic gripper structure was proposed, and the optimization goals were that the first steady state transition load (the transition process of the BFG structure from the open state to the closed state) was minimized, and that the second steady-state transition load was the largest, while the maximum principal plane stress was given as the constraint condition.
Abstract: This paper proposes a multi-objective optimization model for anti-symmetric cylindrical shell in the bionic gripper structure. Here, the response surface method is used to establish multiple surrogate models of the anti-symmetric cylindrical shell, and the non-dominated sorting genetic algorithm-II (NSGA-II) is used to optimize the design space of the anti-symmetric cylindrical shell; the design points of the anti-symmetric cylindrical shell are verified by experimental methods. The optimization goals are that the first steady state transition load (the transition process of the bionic gripper structure from the open state to the closed state) of the anti-symmetric cylindrical shell is minimized, and the second steady state transition load (the transition process of the bionic gripper structure from the closed state to the open state) is the largest. At the same time, in order to prevent stable instability caused by stress concentration in the second steady state of the anti-symmetric cylindrical shell, the maximum principal plane stress is given as the constraint condition. The validity of the optimization results is verified by finite element and experimental methods. Due to the stable transition load of the anti-symmetric cylindrical shell being significantly larger than that of the orthogonal laminated plate, therefore, the anti-symmetric cylindrical shell has potential application prospects in the application of deformable structures and bionic structures that require composite functions such as having light weight, high strength, and large clamping force. The novelty of this paper lies in the multi-objective optimization of the application of the antisymmetric bistable cylindrical shell in the bionic gripper structure.

3 citations