Finite element analysis of cantilever plate structure excited by patches of piezoelectric actuaturs

2011 ◽

Vol 110-116 ◽

pp. 4212-4219

Author(s):

Abhay M. Khalatkar ◽

Rakesh H. Haldkar ◽

V.K. Gupta

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Cantilever Beam ◽

Piezoelectric Actuator ◽

Smart Structures ◽

Piezoelectric Actuators ◽

Small Scale ◽

Cantilever Plate ◽

Element Analysis ◽

Plate Structure

There is increasing demand for developing smart structures in various electronic and electromechanical systems during past two decades. The modeling analyzing and manufacturing of these small-scale components remained always a challenging job. Finite element capability available in commercial software package ANSYS makes it convenient to perform modeling and analyzing of these smart structures. In this study a 3-D finite element analysis for cantilever plate structure excited by patches of piezoelectric actuator is presented. To investigate the influence of actuator location and configuration of piezoelectric actuators attached to the plate structure in order to identify the optimal configuration of the actuators for selective excitation of the mode shapes of the cantilever plate structure. The finite element modeling based on ANSYS package using modal analysis and harmonic analysis is used in this study for cantilever plate structure excited by patch type of piezoelectric actuators of PZT-5A at different locations of same geometrical parameters on the cantilever beam. The results clearly indicate optimal locations and configuration of the piezoelectric actuator patches for achieving the excitation of plate modes. Consequently, the results indicate that effective active damping of structural vibration of the cantilever plate can be achieved by proper positioning of the piezoelectric actuator patches.

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Study on the Seismic Performance of Box-Plate Steel Structure with Openings Modular Unit

Materials ◽

10.3390/ma12244142 ◽

2019 ◽

Vol 12 (24) ◽

pp. 4142 ◽

Cited By ~ 1

Author(s):

Jinjie Men ◽

Guanlei Fan ◽

Tao Lan ◽

Jiachen Wang ◽

Liquan Xiong

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Seismic Performance ◽

Steel Structure ◽

Lateral Force ◽

Plate Steel ◽

Element Analysis ◽

Plate Structure ◽

Modular Unit ◽

Practical Engineering

The box-plate steel structure residence is a box structure with stiffened steel plates directly used as load-bearing walls and floors. In practical engineering, due to the functional requirements of the building, it is necessary to open door or window openings on the box-plate steel structure walls. To study the seismic performance of the box-plate steel structure with openings system, two three-story single-compartment box-plate steel structures with openings modular units were designed and fabricated according to the 1:3 reduced scale. Through the quasi-static loading test, numerical simulation, and theoretical analysis, the failure process, failure mode, lateral force resistant capacity, and hysteresis performance of the specimens were studied. The impact of the different opening areas and opening position on the seismic performance of the box-plate steel structure was emphatically analyzed. The results of the test indicated that the openings on the steel wall plate would reduce the initial stiffness and the lateral force resistant capacity of the specimen; the destruction of the box-plate steel structure with openings modular unit under the low cyclic loading effect started with the tear in the corner of the openings and ended with the tear in the corner steel wall plate. Then, the finite element analysis (FEA) models were developed to supplement the experimental study, and the comparisons were made between measured and simulated results on load versus displacement relationships and failure modes. On the basis of the stressing mechanism of the box-plate structure modular unit, the calculation equation of the lateral force resistant capacity of the box-plate structure with openings modular unit was put forward. Then, the proved finite element analysis (FEA) models were used for parameter analysis of different influence parameters to verify the proposed calculation equation. The results showed that the proposed calculation equation had high accuracy and could be used as a design basis for practical engineering.

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Development of Energy Finite Element Analysis in Vibration Analysis of Composite Laminate Plate Structures

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.470.1020 ◽

2013 ◽

Vol 470 ◽

pp. 1020-1023

Author(s):

Yang Yang ◽

Xi Liang Chen ◽

Wen Wu Zhang

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Energy Density ◽

Vibration Analysis ◽

Composite Laminate ◽

Laminate Plate ◽

Element Analysis ◽

Plate Structure ◽

Composite Laminate Plate ◽

Energy Finite Element Analysis

The high frequency vibration analysis of a composite laminate plate structure subjected to impact loads was investigated by using method of energy finite element analysis (EFEA). The time and space averaged energy density was used as the primary variable to form the governing differential equations. The multilayer laminate plate is simplified to be equivalent isotropic plate using the average concept, such as the average damping loss factor and the average group speed. The global system of EFEA equations can be solved numerically and the energy density distribution within the whole system can then be obtained. The EFEA numerical results for composite laminate plate structure were validated through comparison with those of very dense conventional finite element analysis (FEA).

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Finite element analysis of the effect M/V ratios on punching shear strength of edge slabcolumn connections of flat plate structure

MATEC Web of Conferences ◽

10.1051/matecconf/201927601012 ◽

2019 ◽

Vol 276 ◽

pp. 01012

Author(s):

I Ketut Sudarsana ◽

I Gede Gegiranang Wiryadi ◽

I Gede Adi Susila

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Shear Strength ◽

Flat Plate ◽

Nonlinear Behavior ◽

Punching Shear ◽

Element Analysis ◽

Plate Structure ◽

Concrete Damage ◽

Good Agreement

The occurrence of unbalanced moment in edge slab-column connections of flat plate structure cannot be avoided and increase the slab shear stress around the column. This paper investigates the effect of M/V ratio on punching shear strength of edge column-slab connections using finite element analysis. The Concrete Damage Plasticity (CDP) and truss model in Abaqus were used to model the nonlinear behavior of concrete and reinforcement, respectively. Ten values of the M/V ratio were applied to a subassembly edge connection model which was part of a properly design of a 5 story flat plate structure. The shear strength prediction of ACI 318-14 code on the effect of unbalanced moment in edge column-slab connection was also studied. The analysis results show that the effect of unbalanced moment on shear strength is not significant for M/V ratio less than 0.3. However, for M/V ratio greater than 0.3, the shear strength is reduced in an exponential order. The ACI 318-14 code overestimates prediction on connection’s shear strength for the M/V ratio less than 0.3. The code predictions are in a good agreement with the analysis results for the edge connection with the M/V ratio greater than 0.3.

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