Effect of imperfect bonding on the dynamic response of a pre-stressed sandwich plate-strip with elastic layers and a piezoelectric core

2017 ◽  
Vol 30 (6) ◽  
pp. 658-667 ◽  
Author(s):  
Ahmet Daşdemir
Keyword(s):  
Dynamic Response ◽  
Sandwich Plate ◽  
Imperfect Bonding ◽  
Plate Strip ◽  
Elastic Layers

Dynamic response of a pre-stressed bi-layered plate-strip subjected to an arbitrary inclined time-harmonic force

2017 ◽  
Vol 26 (3) ◽  
pp. 255-262
Author(s):  
AHMET DASDEMIR ◽  
Keyword(s):  
Dynamic Response ◽  
Equations Of Motion ◽  
Three Dimensional ◽  
Layered Plate ◽  
Field Problem ◽  
Time Harmonic ◽  
Governing System ◽  
Plate Strip ◽  
Linearized Theory ◽  
Complete Contact

Within the scope of the piecewise homogeneous body model with utilizing of the three dimensional linearized theory of elastic waves in initially stressed bodies the dynamical stress field problem in a bi-layered plate-strip with initial stress under the action of an arbitrary inclined timeharmonic force resting on a rigid foundation is investigated. The concrete materials such as a pair of Aluminum and Steel are selected. It is assumed that there exists a complete contact interaction between the layers. The mathematical modeling of the problem under consideration is carved out, and the governing system of the partial differential equations of motion is approximately solved by employing Finite Element Method. The numerical results related to the influence of certain parameters on the dynamic response of the plate-strip are presented.

Numerical Simulation of Penetration Effect of the Rhombic Fragment on Square Honeycomb Sandwich Plate

2012 ◽  
Vol 466-467 ◽  
pp. 347-351
Author(s):  
Tao Wang ◽  
Wen Li Yu ◽  
San Qiang Dong ◽  
Yun Liang Gao
Keyword(s):  
Numerical Simulation ◽  
Dynamic Response ◽  
Energy Loss ◽  
Oblique Incidence ◽  
Sandwich Plate ◽  
Impact Angle ◽  
Penetration Effect ◽  
Honeycomb Sandwich ◽  
Honeycomb Sandwich Plate ◽  
Movement Rules

In this paper, the penetration effect of a rhombic fragment penetrating sandwich in an oblique incidence with 30º impact angle at the velocity of 300 m•s-1, 350 m•s-1, 400 m•s-1, 450 m•s-1, 500 m•s-1 and 600 m•s-1 is simulated by LS-DYNA. The dynamic response and the damage patterns of sandwich plate and the movement rules of the rhombic fragment are acquired. The ratio of energy loss and the maximum resultant acceleration of the rhombic fragment are compared with that of the spherical respectively.

scholarly journals A Mathematical Model for Forced Vibration of Pre-Stressed Piezoelectric Plate-Strip Resting On Rigid Foundation

MATEMATIKA ◽  
2018 ◽  
Vol 34 (2) ◽  
pp. 419-431
Author(s):  
Ahmet Daşdemir
Keyword(s):  
Mathematical Model ◽  
Dynamic Response ◽  
Initial Stress ◽  
Piezoelectric Plate ◽  
Equations Of Motion ◽  
Three Dimensional ◽  
Rigid Foundation ◽  
Time Harmonic ◽  
Governing System ◽  
Plate Strip

A mathematical model to investigate the dynamic response of a piezoelectric plate-strip with initial stress under the action of a time-harmonic force resting on a rigid foundation is presented within the scope of the three-dimensional linearized theory of electro-elasticity waves in initially stressed bodies (TLTEEWISB). The governing system of equations of motion is solved by employing the Finite Element Method (FEM). The numerical results illustrating the dependencies of different problem parameters are investigated. In particular, the influence of a change in the value of the initial stress parameter on the dynamic response of the plate-strip is discussed.

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