Numerical Study of Compressive Behavior of Concrete at High Strain Rates
Publication: Journal of Engineering Mechanics
Volume 125, Issue 10
Abstract
High strain rate unconfined compressional tests on concrete are simulated by a 3D discrete-element method. The laboratory data set was provided by three unconfined experiments on a split Hopkinson pressure bar apparatus at very high strain rates (350–700 s−1). This numerical method was chosen because it is well adapted to problems involving the characterization of fracturing and fragmentation in geomaterials. The simulations input data are the recorded experimental velocities, whereas the simulations output data are the computed forces that are compared with the experimental ones. The fit between the experimental and the numerical data is quite good. Based on this fit, it is shown that the strain rate dependency of the material strength can be explained by inertial effects.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 125 • Issue 10 • October 1999
Pages: 1154 - 1163
History
Received: Apr 27, 1998
Published online: Oct 1, 1999
Published in print: Oct 1999
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