Premium
Explosion‐induced dynamic soil–structure interaction analysis with the coupled Godunov–variational difference approach
Author(s) -
Karinski Y. S.,
Feldgun V. R.,
Yankelevsky D. Z.
Publication year - 2008
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.2436
Subject(s) - envelope (radar) , mechanics , godunov's scheme , shell (structure) , riemann problem , shock (circulatory) , dynamic compaction , symmetry (geometry) , shock wave , rarefaction (ecology) , finite difference , physics , riemann hypothesis , geotechnical engineering , geology , compaction , mathematics , geometry , mathematical analysis , numerical analysis , materials science , engineering , composite material , telecommunications , paleontology , medicine , radar , species richness
The paper presents a coupled 2D Godunov–variational difference approach for soil–structure interaction due to a nearby explosion. Owing to the high‐intensity dynamic loads, complex processes take place, including transient separation of the buried structure from the surrounding soil, large deformations of the buried structure including loss of stability, and so on. The approach takes into account the irreversible bulk compaction of the soil medium and is based on the relationships of the shock and rarefaction waves with finite‐difference equations of the shell motion, using a simple iteration method. The model reduces the contact problem to the self‐similar symmetric Riemann problem. The proposed approach is demonstrated by the solution of a buried explosion in the proximity of a lined tunnel buried in soil. The peak contact pressure envelope along the lining was studied. It was found that for an explosion in the proximity of a relatively rigid shell, the maximum value of this envelope is located at some distance from the lining's axis of symmetry. Copyright © 2008 John Wiley & Sons, Ltd.