Response of buried structures to ground-shock loading
A two-dimensional lagrangian finite-difference computer program is developed for wave propagation analysis of buried model structures to ground-shock loading in a unified fashion. The numerical scheme is the standard method originally proposed by Von Neuman and Richtmyer, using artificial viscosity to smooth shock fronts. The analysis includes explosive detonation, ground-shock propagation, and soil-structure interaction. Three test configurations, corresponding to short, intermediate, and long standoff distances were calculated to understand the response of buried structures in terms of their standoff distance. However, since few dynamic data are available for the soil and concrete used in the construction of the test systems, and the computer code is in plane strain, the calculations were intended for generating the qualitative features of model behaviors. Nevertheless, the computational results were consistent with experimental observations and provided a rational basis to interpret modes of failure, loads profiles at concrete surface, and their inter-relationships.
- Research Organization:
- North Carolina State Univ., Raleigh, NC (USA)
- OSTI ID:
- 5233079
- Country of Publication:
- United States
- Language:
- English
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COMPUTERIZED SIMULATION
DETONATION WAVES
EXPLOSIONS
FINITE DIFFERENCE METHOD
ITERATIVE METHODS
NUMERICAL SOLUTION
SHOCK WAVES
SIMULATION
SOIL-STRUCTURE INTERACTIONS
TWO-DIMENSIONAL CALCULATIONS
UNDERGROUND EXPLOSIONS
WAVE PROPAGATION