Dynamic Instability of CNT-Reinforced Composite Plate Under Non-uniform In-plane Loading

2022 ◽  
pp. 381-396
Author(s):  
Vishal Singh ◽  
Rajesh Kumar ◽  
S. N. Patel
Keyword(s):  
Composite Plate ◽  
Dynamic Instability ◽  
Reinforced Composite

Multi-scale simulation of temperature on braided fibers reinforced composite plate considering the fluctuations

2021 ◽  
Vol 172 ◽  
pp. 121144
Author(s):  
Zecan Tu ◽  
Longkai Li ◽  
Junkui Mao ◽  
Chenwei Zhao ◽  
Xinyu Wu
Keyword(s):  
Composite Plate ◽  
Multi Scale ◽  
Reinforced Composite

The group velocity variation of Lamb wave in fiber reinforced composite plate

Ultrasonics ◽  
2007 ◽  
Vol 47 (1-4) ◽  
pp. 55-63 ◽  
Author(s):  
Sang-Ho Rhee ◽  
Jeong-Ki Lee ◽  
Jung-Ju Lee
Keyword(s):  
Group Velocity ◽  
Lamb Wave ◽  
Composite Plate ◽  
Velocity Variation ◽  
Fiber Reinforced ◽  
Fiber Reinforced Composite ◽  
Reinforced Composite

Modes of Wave Propagation and Dispersion Relations in Inclusion Reinforced Composite Plates

2010 ◽  
Author(s):  
Yu Cheng Liu ◽  
Jin Huang Huang
Keyword(s):  
Composite Plate ◽  
Elastic Moduli ◽  
Lamb Waves ◽  
Plate Thickness ◽  
Composite Plates ◽  
Dispersion Relations ◽  
Elastic Behavior ◽  
Effective Elastic Moduli ◽  
Aspect Ratios ◽  
Reinforced Composite

This paper mainly analyzes the wave dispersion relations and associated modal pattens in the inclusion-reinforced composite plates including the effect of inclusion shapes, inclusion contents, inclusion elastic constants, and plate thickness. The shape of inclusion is modeled as spheroid that enables the composite reinforcement geometrical configurations ranging from sphere to short and continuous fiber. Using the Mori-Tanaka mean-field theory, the effective elastic moduli which are able to elucidate the effect of inclusion’s shape, stiffness, and volume fraction on the composite’s anisotropic elastic behavior can be predicted explicitly. Then, the dispersion relations and the modal patterns of Lamb waves determined from the effective elastic moduli can be obtained by using the dynamic stiffness matrix method. Numerical simulations have been given for the various inclusion types and the resulting dispersions in various wave types on the composite plate. The types (symmetric or antisymmetric) of Lamb waves in an isotropic plate can be classified according to the wave motions about the midplane of the plate. For an orthotropic composite plate, it can also be classified as either symmetric or antisymmetric waves by analyzing the dispersion curves and inspecting the calculated modal patterns. It is also found that the inclusion contents, aspect ratios and plate thickness affect propagation velocities, higher-order mode cutoff frequencies, and modal patterns.

Buckling Mode Interaction in Composite Plate Assemblies

1995 ◽  
Vol 48 (11S) ◽  
pp. S52-S60 ◽  
Author(s):  
Ioannis G. Raftoyiannis ◽  
Luis A. Godoy ◽  
Ever J. Barbero
Keyword(s):  
Linear Elasticity ◽  
Composite Plate ◽  
Mode Interaction ◽  
Equilibrium Path ◽  
Buckling Mode ◽  
Fiber Reinforced Composite ◽  
Composite Columns ◽  
Reinforced Composite ◽  
Coupled Solution ◽  
Coordinate Basis

The analysis of buckling mode interaction of fiber-reinforced composite columns, modeled as plate assemblies, is presented. The main assumptions are linear elasticity; a linear fundamental equilibrium path; the existence of critical states that are coincident or near coincident; and a coupled path rising from a quadratic combination of modal displacements due to interaction. The formulation adopted is known as the W-formulation, in which the energy is written in terms of a sliding set of incremental coordinates, measured with respect to the fundamental path. The energy is then expressed with respect to a reduced modal coordinate basis, and the coupled solution arising from interaction is computed. An example of a pultruded composite I-column subjected to axial compression illustrates the procedure.

Dynamic Instability of Delaminated Composite Plates under Parametric Excitation

2006 ◽  
Vol 326-328 ◽  
pp. 1765-1768 ◽  
Author(s):  
Meng Kao Yeh ◽  
Kuei Chang Tung
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Parametric Excitation ◽  
Composite Plate ◽  
Dynamic Instability ◽  
Composite Plates ◽  
Modal Parameters ◽  
The Finite Element Method ◽  
Electromagnetic Device ◽  
Instability Regions

The dynamic instability behavior of delaminated composite plates under transverse excitations was investigated experimentally and analytically. An electromagnetic device, acting like a spring with alternating stiffness, was used to parametrically excite the delaminated composite plates transversely. An analytical method, combined with the finite element method, was used to determine the instability regions of the delaminated composite plates based on the modal parameters of the composite plate and the position, the stiffness of the electromagnetic device. The delamination size and position of composite plates were varied to assess their effects on the excitation frequencies of simple and combination resonances in instability regions. The experimental results were found to agree with the analytical ones.

Microstructure Effects of Ultrasonic Waves in a Fiber Reinforced Composite Plate

2000 ◽  
Vol 17 (10) ◽  
pp. 740-742
Author(s):  
Han Jun-Bo ◽  
Tang Li-Guo ◽  
Cheng Jian-Chun ◽  
Berthelot Yves
Keyword(s):  
Composite Plate ◽  
Ultrasonic Waves ◽  
Fiber Reinforced ◽  
Fiber Reinforced Composite ◽  
Reinforced Composite ◽  
Microstructure Effects
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