Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/20474
Title: Dynamic behavior of 3D biaxial spacer weft-knitted composite T-beam under transverse impact
Authors: Zhang, M
Sun, B
Hu, H 
Gu, B
Keywords: Impact responses
3D biaxial spacer weft-knitted composite T-beam
Rib height
Modified split Hopkinson pressure bar (SHPB)
User defined material subroutine
FEM
Issue Date: 2009
Publisher: Taylor & Francis
Source: Mechanics of advanced materials and structures, 2009, v. 16, no. 5, p. 356-370 How to cite?
Journal: Mechanics of advanced materials and structures 
Abstract: The dynamic responses of T-beam structures made of 3D biaxial weft-knitted composite were tested under different impact velocities to characterize strength and energy absorptions of the T-beam with different rib heights. The transverse impact tests were carried out at a modified split Hopkinson pressure bar (SHPB) apparatus and also compared with the quasi-static test results. A user defined material subroutine named MAT/UMAT, which was based on a unit-cell model of the 3D knitted composite was developed to calculate the impact responses with a commercial FEM code ABAQUS. The load-displacement curves of the composite T-beam with different rib height under impact were calculated and compared with those from experiment. Mechanisms of the load-displacement curve fluctuations obtained from experiments are also discussed. The effect of the rib height on the load-displacement cures and energy absorptions have also been analyzed. Such an approach could also be extended to the design of other 3D knitted composite structures with different shapes under impulsive loading.
URI: http://hdl.handle.net/10397/20474
ISSN: 1537-6494
DOI: 10.1080/15376490802710761
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