Simulation of Soil Behavior under Blast Loading
Publication: International Journal of Geomechanics
Volume 11, Issue 4
Abstract
A viscoplastic cap model was previously developed to address the high strain rate effect on soil behaviors. Although the model is an improvement over the inviscid cap model, it does not update soil density and bulk modulus as the shock wave propagates through the soil. Further, soil should be modeled as a three-phase porous media to accommodate various degrees of water saturation. This is especially true for the soil mass surrounding the source of energy release because each of the three phases responds differently to shock loading. A revised cap model comprising a Gruneisen equation of state for each of the three phases has been developed. These equations of state for solid, water, and air have been integrated with the viscoplastic cap model to simulate behaviors of soil with different degrees of water saturation. Numerical results from this revised soil cap model compared closely with experimental data from explosive tests in both dry and saturated soil.
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Information & Authors
Information
Published In
International Journal of Geomechanics
Volume 11 • Issue 4 • August 2011
Pages: 323 - 334
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Oct 12, 2009
Accepted: Aug 3, 2010
Published online: Jul 15, 2011
Published in print: Aug 1, 2011
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