Abstract
The paper reviews recent work at Northwestern University in which the apparent increase of strength of concrete at very high strain rates experienced in projectile impact (10 per second to 10 million per second), called `dynamic overstress', is explained by the release of local kinetic energy of shear strain rate field in finite-size particles that about to be produced by interface fracture. The theory predicts the particle size and the additional kinetic energy density that must be dissipated in finite element codes. The additional energy dissipation explains the so-called “dynamic overstress” - an apparent drastic increase of strength that had to be introduced to fit the data on deceleration of missile penetrating concrete or rock.
Original language | English (US) |
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Pages | 500-501 |
Number of pages | 2 |
State | Published - Jan 1 2017 |
Event | 14th International Conference on Fracture, ICF 2017 - Rhodes, Greece Duration: Jun 18 2017 → Jun 20 2017 |
Conference
Conference | 14th International Conference on Fracture, ICF 2017 |
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Country/Territory | Greece |
City | Rhodes |
Period | 6/18/17 → 6/20/17 |
ASJC Scopus subject areas
- Civil and Structural Engineering
- Building and Construction