Abstract
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.
Highlights
Composite materials are widely used in aerospace structures, they are usually vulnerable to accidental and eccentric impacts from various multitude and complex loading conditions, such as dropped tools, gravels collision, bird strike, hails and so on
The results showed that the contact force and the absorbed energy will increase, and the failure will more likely occur in the low velocity eccentric impact
Under the eccentric impact point B are higher than that of several other impact cases, reinforced square laminated composite plate subjected to low velocity central impact (Point A) and eccentric impact (Point B/C/D/E)
Summary
Composite materials are widely used in aerospace structures, they are usually vulnerable to accidental and eccentric impacts from various multitude and complex loading conditions, such as dropped tools, gravels collision, bird strike, hails and so on. The study of low velocity eccentric impact has only been reported by Shariyat et al [11,12,13,14] in literature First of all, they only investigated the low velocity eccentric impact analysis of rectangular laminated composite plates subjected to in-phase/anti-phase biaxial preloads (see reference [11]). The major novelty of their approach is a novel double superposition power-exponential global-local theory and a refined contact law to investigate low velocity eccentric impact responses of rectangular sandwich plates with viscoelastic cores (see reference [13]) In this work, they investigated effects of the pre-stresses on the indentation and contact force, and the effects of the eccentricity on the impact responses of the sandwich plates for the first time.
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call