Sensitivity of Model Parameter on Dynamic Behavior Simulation of HPC
Publication: Journal of Materials in Civil Engineering
Volume 22, Issue 12
Abstract
This paper investigates the effect of friction angle and flow ratio on stress-strain relationship of high performance concrete (HPC) subjected to dynamic load. The simulation reveals that ultimate compressive strength of HPC shows a discrepancy from 111 to 139 MPa for friction angles between 30° and 50° at a loading rate of 800 GPa/s compared to 87 MPa under static loading. The influence of friction angle on strain is found to be nearly constant, that is, at 0.004. Lower value of flow ratio leads to larger deformation. In turn, the strength is lower. The results show that both friction angle and flow ratio exhibit some degree of sensitivity on either the stress or strain or both. The dynamic strength dependencies on friction angle and flow ratio are correlated. The equation contributes in defining material model parameters in the analysis of HPC dynamic behavior.
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Acknowledgments
This research is sponsored by the Ministry of Higher Learning Malaysia under Grant No. UNSPECIFIEDUKM-KK-02-FRGS0014-2006.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 22 • Issue 12 • December 2010
Pages: 1244 - 1251
Copyright
© 2010 ASCE.
History
Received: Sep 3, 2009
Accepted: Jun 2, 2010
Published online: Jun 4, 2010
Published in print: Dec 2010
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