Please use this identifier to cite or link to this item:
|Title:||Experimental and numerical study of the response of flexible laminates to impact loading|
|Authors:||Tan, V.B.C. |
|Citation:||Tan, V.B.C., Shim, V.P.W., Tay, T.E. (2003-11). Experimental and numerical study of the response of flexible laminates to impact loading. International Journal of Solids and Structures 40 (23) : 6245-6266. ScholarBank@NUS Repository. https://doi.org/10.1016/S0020-7683(03)00413-X|
|Abstract:||Fabrics and flexible laminates comprising highly oriented polymers possess high impact resistance and are often used in flexible armour applications. This study presents an idealized computational model for flexible [0°/90°] polyethylene fiber-reinforced laminates and show how the model can simulate actual impact tests conducted on the laminates. As these materials are viscoelastic, accurate modeling of their impact and perforation responses requires the formulation of constitutive equations representing such behavior. The material is idealized as networks of one-dimensional pin-jointed fiber elements defined by viscoelastic constitutive relations. Three-element viscoelastic Zener models are used as they are simple yet sufficient to account for the effects of intermolecular and intramolecular bonds, as well as viscous slippage between molecular chains, on the mechanical properties of oriented polymeric fibers. The effects of delamination in laminates are also taken into consideration by modeling flexible laminates as two fiber network layers bonded to each other at corresponding element cross-over points in the adjacent layers. Inter-ply bonding is represented by infinitesimal rigid links which break when the inter-ply bond strength is exceeded resulting in delamination between the plies. Predictions of residual velocity, development of deformation and delamination correlate well with experimental results. © 2003 Elsevier Ltd. All rights reserved.|
|Source Title:||International Journal of Solids and Structures|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jul 11, 2018
WEB OF SCIENCETM
checked on Jun 25, 2018
checked on Jun 30, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.