Time-dependent behavior of laminated functionally graded beams bonded by viscoelastic interlayer based on the elasticity theory

2020 ◽  
Vol 90 (7) ◽  
pp. 1457-1473 ◽  
Author(s):  
Zhiyuan Yang ◽  
Peng Wu ◽  
Weiqing Liu
Keyword(s):  
Elasticity Theory ◽  
Functionally Graded ◽  
Time Dependent ◽  
Dependent Behavior ◽  
Viscoelastic Interlayer

Analytical Solutions for Functionally Graded Sandwich Plates Bonded by Viscoelastic Interlayer Based on Kirchhoff Plate Theory

2020 ◽  
Vol 12 (06) ◽  
pp. 2050062
Author(s):  
Zhiyuan Yang ◽  
Peng Wu ◽  
Weiqing Liu ◽  
Hai Fang
Keyword(s):  
Sandwich Plate ◽  
Plate Theory ◽  
Functionally Graded ◽  
Time Dependent ◽  
Kirchhoff Plate ◽  
Time Step ◽  
Kirchhoff Plate Theory ◽  
Dependent Behavior ◽  
Present Solution ◽  
Viscoelastic Interlayer

In this paper, an analytical solution for functionally graded sandwich plate adhesively bonded by viscoelastic interlayer is proposed to research its time-dependent behavior. The Kirchhoff plate theory is employed to describe the mechanical property of each gradient layer with elastic modulus defined as the arbitrary function through the thickness direction. The standard linear solid model is applied to simulate the viscoelasticity of the interlayer with considering the strain memory effect. By the use of the vibrational method and the Laplace transformation, the solutions of stresses and displacements are solved analytically. The validation study indicates that the present solution is correct and more effective than the finite element solution because of the fine mesh both in the geometric shape and the time step. In addition, the influences of the geometry and material parameters on the time-dependent behavior of the sandwich plate are investigated in detail.

Time-Dependent Behavior and Fracture of Functionally Graded Thermal Barrier Coatings under Thermal Shock

2005 ◽  
Vol 492-493 ◽  
pp. 379-384 ◽  
Author(s):  
Klod Kokini ◽  
Sudarshan V. Rangaraj
Keyword(s):  
Thermal Shock ◽  
Thermal Barrier Coatings ◽  
Functionally Graded ◽  
Yttria Stabilized Zirconia ◽  
Time Dependent ◽  
Thermal Barrier ◽  
Stabilized Zirconia ◽  
Barrier Coatings ◽  
Dependent Behavior ◽  
Bond Coat Alloy

The thermal fracture and its dependence on time-dependent behavior in functionally graded yttria stabilized zirconia - NiCoCrAlY bond coat alloy thermal barrier coatings was studied. The response of three coating architectures of similar thermal resistance to laser thermal shock tests was considered, experimentally and computationally.

scholarly journals Time-dependent characteristics of two-layer functionally graded plates adhesively bonded by a viscoelastic interlayer based on Kirchhoff plate theory

Mechanika ◽  
2020 ◽  
Vol 26 (6) ◽  
pp. 478-485
Author(s):  
Zhiyuan YANG ◽  
Peng WU ◽  
Weiqing LIU
Keyword(s):  
Finite Element ◽  
Plate Theory ◽  
Functionally Graded ◽  
Time Dependent ◽  
Functionally Graded Plates ◽  
Time Step ◽  
Fine Mesh ◽  
Present Solution ◽  
Stress And Deformation ◽  
Viscoelastic Interlayer

An analytical solution is proposed to investigate the time-dependent characteristics of two-layer functionally graded plates with a viscoelastic interlayer. The elastic modulus in each graded layer varies through the thickness following an arbitrary function, and its mechanical properties are described based on the Kirchhoff theory. The Maxwell-Wiechert model is applied to simulate the viscoelastic adhesive interlayer with the neglect of memory effect. The energy equation of the system is expressed by the deformation components, which are expanded as the double trigonometric series. By virtue of variational method, the solutions of stress and deformation are determined efficiently. The comparison study indicates that the present solution matches the finite element solution well; however, the finite element method is highly time-consuming because of the fine mesh in the geometric shape and the time step. Finally, the influences of the geometry and material on the time-dependent behavior of the structure are discussed in detail.

scholarly journals On the Time-Dependent Behavior of FGM Plates

2008 ◽  
Vol 399 ◽  
pp. 63-70 ◽  
Author(s):  
Holm Altenbach ◽  
Victor A. Eremeyev
Keyword(s):  
Material Properties ◽  
Plate Theory ◽  
Functionally Graded ◽  
Material Behavior ◽  
Time Dependent ◽  
Classical Plate Theory ◽  
Graded Materials ◽  
Dependent Behavior ◽  
Linear Viscoelastic Material ◽  
Linear Viscoelastic

A non-classical plate theory based on the direct approach is introduced and applied to plates composed of functionally graded materials (FGM). The governing two-dimensional equations are formulated for a deformable surface, the viscoelastic stiffness parameters are identified assuming linear-viscoelastic material behavior. In addition, the material properties are changing in the thickness direction. Solving some problems of the global structural analysis it can be shown that in some cases the results based on the presented theory significantly differ from the results based on the Kirchhofftype theory.

Time-dependent behavior of nitric oxide excited states under the effect of electron impact

2021 ◽  
Vol 28 (2) ◽  
pp. 024503
Author(s):  
Mohammed amin Ferdi ◽  
Abdelaaziz Bouziane ◽  
Mourad Djebli
Keyword(s):  
Nitric Oxide ◽  
Electron Impact ◽  
Excited States ◽  
Time Dependent ◽  
Dependent Behavior
Sign in / Sign up

Export Citation Format

Share Document