Dynamic Response of Two-Core Sandwich Composite Structures under Impact |
| Journal |
Solid State Phenomena (Volume 136) |
| Volume |
Advanced Structural and Functional Materials for Protection |
| Edited by |
William Lau, Shang Huai Min, Lee Nam Sua, Ma Jan and Alfred Tok |
| Pages |
115-124 |
| DOI |
10.4028/www.scientific.net/SSP.136.115 |
| Online since |
February, 2008 |
| Authors |
Da Zhi Jiang,
Fu Biao Yang,
Su Li Xing,
Jia Yu Xiao
|
| Keywords |
Composite Laminate, Finite Element Analysis (FEA), Impact Behaviour, Sandwich Structure |
| Abstract |
Traditional sandwich structure consists of two face sheets and a core. With an internal
sheet inserted into the core, a two-core sandwich structure is then formed. Two-core sandwich
structures with composite laminated face sheets and a thin internal sheet subjected to low velocity
impact are studied in this paper. Local displacement of the core under the point of impact is
investigated. Simulated results show that the local displacement of the core along the direction of
the impact has been decreased significantly by introducing the internal sheet into a traditional single
sandwich structure and by reducing the space between the internal sheet and the impacted face sheet.
Shear deformation in the cores of a two-core sandwich structure is also investigated and attention is
focused on shear strains on interfaces between face/internal sheets and the cores. Results further
show that strain levels in selected elements at the interested interfaces depend upon locations of the
selected elements and arrangements of the internal sheet. |
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