Modelling crimp in woven fabrics subjected to ballistic impact

Tan, V. B. C. and Shim, V. P. W. and Zeng, X. (2005) Modelling crimp in woven fabrics subjected to ballistic impact. International Journal of Impact Engineering, 32 (1-4). pp. 561-574. ISSN 0734-743X

[img]
Preview
Text (Accepted Version)
Article (3).pdf

Download (622Kb) | Preview

Abstract

Woven fabrics are widely used in flexible armour systems for protection against fragments and projectiles from small arms. The woven architecture introduces crimp or undulations in the yarns as they pass alternately over and under orthogonal yarns. An undesirable effect of crimp is excessive deflection in fabric armour during impact. The numerical results of ballistic impact and perforation of woven aramid fabric are presented in this paper. The fabric is modelled as a network of nodal masses connected by one-dimensional viscoelastic elements. The focus of the computational simulation is to compare two different ways of
incorporating yarn crimp into the fabric model. Tensile tests on strips of the woven fabric show an initial toe region in the load–deflection curve before the curve asymptotically converges to an approximately straight line beyond a certain strain. The first method of introducing crimp into the fabric model is to include the toe region of the load–deflection curve in the constitutive equation describing the viscoelastic elements. The second method to account for crimp is to physically reflect the woven architecture in the fabric model by arranging the chain of linear elements that define each yarn in a zigzag manner.


Statistics for USQ ePrint 32605
Statistics for this ePrint Item
Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty / Department / School: No Faculty
Date Deposited: 26 Jun 2017 01:30
Last Modified: 09 Nov 2017 02:30
Uncontrolled Keywords: woven fabric; crimp; ballistic impact; numerical simulation
Fields of Research : 09 Engineering > 0912 Materials Engineering > 091209 Polymers and Plastics
Socio-Economic Objective: A Defence > 81 Defence > 8101 Defence > 810109 Personnel
Identification Number or DOI: 10.1016/j.ijimpeng.2005.06.008
URI: http://eprints.usq.edu.au/id/eprint/32605

Actions (login required)

View Item Archive Repository Staff Only