000013271 001__ 13271
000013271 005__ 20161114160334.0
000013271 04107 $$aeng
000013271 046__ $$k2009-06-22
000013271 100__ $$aDesmet, B.
000013271 24500 $$aNumerical prediction of blast-induced wave propagation in the soil

000013271 24630 $$n2.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013271 260__ $$bNational Technical University of Athens, 2009
000013271 506__ $$arestricted
000013271 520__ $$2eng$$aThe prediction of the effect of blast induced vibrations on structures is a complex problem due to the specific nature of the load. Where empirical or analytical methods fall short, numerical modeling can offer a solution. The occurrence of shock waves and the high strain rates, pressures and deformations involved in this process call for the use of hydrocodes in the area close to the explosion. Linear elastic calculation tools are preferable at larger distances from the blast. A combination of both tools can lead to efficient and complete modeling of an underground blast event. In this paper, a methodology is proposed in which the Autodyn hydrocode is combined with a linear elastic simulation. The possibilities and limitations of the different solvers and modeling tools of Autodyn are examined to determine their use for the simulation of an underground explosion. A finetuned Autodyn model is proposed, dealing with the quality of the transmitting boundary conditions, the deformation of the grid, the solver and material interaction and the prevention of numerical material diffusion.

000013271 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013271 653__ $$aBlast, Soil shock, Vibration prediction, Hydrocode, Autodyn. Abstract. The prediction of the effect of blast induced vibrations on structures is a complex problem due to the specific nature of the load. Where empirical or analytical methods fall short, numerical modeling can offer a solution. The occurrence of shock waves and the high strain rates, pressures and deformations involved in this process call for the use of hydrocodes in the area close to the explosion. Linear elastic calculation tools are preferable at larger distances from the blast. A combination of both tools can lead to efficient and complete modeling of an underground blast event. In this paper, a methodology is proposed in which the Autodyn hydrocode is combined with a linear elastic simulation. The possibilities and limitations of the different solvers and modeling tools of Autodyn are examined to determine their use for the simulation of an underground explosion. A finetuned Autodyn model is proposed, dealing with the quality of the transmitting boundary conditions, the deformation of the grid, the solver and material interaction and the prevention of numerical material diffusion.

000013271 7112_ $$aCOMPDYN 2009 - 2nd International Thematic Conference$$cIsland of Rhodes (GR)$$d2009-06-22 / 2009-06-24$$gCOMPDYN2009
000013271 720__ $$aDesmet, B.$$iVantomme, J.$$iDegrande, G.
000013271 8560_ $$ffischerc@itam.cas.cz
000013271 8564_ $$s5562954$$uhttps://invenio.itam.cas.cz/record/13271/files/CD407.pdf$$yOriginal version of the author's contribution as presented on CD, section: Contact-impact problems.
000013271 962__ $$r13074
000013271 980__ $$aPAPER