scholarly journals Simulation of Eccentric Impact of Square and Rectangular Composite Laminates Embedded with SMA

Materials ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 2371 ◽  
Author(s):  
Min Sun ◽  
Mengzhou Chang ◽  
Zhenqing Wang ◽  
Hao Li ◽  
Yanfei Liu
Keyword(s):  
Finite Element ◽  
Damage Zone ◽  
Laminated Composite ◽  
Composite Plates ◽  
Low Velocity Impact ◽  
Zone Model ◽  
Laminated Composite Plates ◽  
Low Velocity ◽  
Interface Elements ◽  
Damage Initiation

In the present work, we study the low velocity impact, both central and eccentric, on square and rectangular laminated composite plates with embedded shape memory alloy (SMA) wires, which are stitched on the top and bottom surfaces of the plate, by using the finite element method. In finite element methods (FEM) simulations, a super-elastic SMA constitutive model is implemented in Abaqus/Explict by using a user defined material subroutine to describe the behaviors of SMAs. The three-dimensional (3D) Hashin failure criterion is adopted to model the damage initiation of laminated composite plates. To model the delamination failure, a cohesive damage zone model is introduced in interface elements. A comprehensive parametric study has been carried out to analyze the effects of eccentricity for the case of square and rectangular laminated composite plates.

scholarly journals Finite Element Modeling of Laminated Composite Plates with Locally Delaminated Interface Subjected to Impact Loading

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Saddam Hussein Abo Sabah ◽  
Ahmad Beng Hong Kueh
Keyword(s):  
Finite Element ◽  
Impact Loading ◽  
Laminated Composite ◽  
Composite Plates ◽  
Low Velocity Impact ◽  
Interface Element ◽  
Laminated Composite Plates ◽  
Low Velocity ◽  
Maximum Displacement ◽  
Absorption Increase

This paper investigates the effects of localized interface progressive delamination on the behavior of two-layer laminated composite plates when subjected to low velocity impact loading for various fiber orientations. By means of finite element approach, the laminae stiffnesses are constructed independently from their interface, where a well-defined virtually zero-thickness interface element is discreetly adopted for delamination simulation. The present model has the advantage of simulating a localized interfacial condition at arbitrary locations, for various degeneration areas and intensities, under the influence of numerous boundary conditions since the interfacial description is expressed discretely. In comparison, the model shows good agreement with existing results from the literature when modeled in a perfectly bonded state. It is found that as the local delamination area increases, so does the magnitude of the maximum displacement history. Also, as top and bottom fiber orientations deviation increases, both central deflection and energy absorption increase although the relative maximum displacement correspondingly decreases when in contrast to the laminates perfectly bonded state.

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