NUMERICAL MODELLING OF IGNITION IN TNT DEFLAGRATION

Autor/autori: Lecturer Eng. Ioan Sorin LEOVEANU, PhD., Assistant Prof. Eng. Kamila KOTRASOVA, PhD. (Slovacia)

Rezumat: Asigurarea unei cat mai bune comportari in exploatare a cladirilor impune, mai ales pentru constructii cu destinatie speciala, un proces de cercetare in continua dezvoltare. Astfel, metodele numerice de analiza s-au dezvoltat intr-un ritm alert atat in domeniul modelarii neliniare a comportarii structurilor de rezistenta cat si in evaluarea incarcarilor exceptionale pe care anumite structuri vor trebui sa le preia. In acest sens, lucrarea de fata isi propune determinarea conditilor initiale legate de amorsarea unei incarcaturi explozive in incinta unei cladiri, cu scopul de a determina caracteristicile initiale ale undelor de soc produse de o incarcatura exploziva. Astfel de solicitari intra in categoria incarcarilor exceptionale, iar presiunile, vitezele si temperaturile cu care acestea se manifesta asupra peretilor cladirii sunt influentate de o multitudine de factori. Scopul acestei lucrari este asigurarea unui model matematic si a unei modelari numerice cat mai exacte.

Cuvinte cheie: ecuatii de stare JWL, fenomene de transport, modelarea exploziilor, metoda volumelor finite.


Abstract: The research process in civil engineering are became more and more most complexes and the numerical methods play an important role in the development of the design and catastrophe estimations effects In the present stage of design and verifications of civil engineering processes the numerical methods are currently used and almost all the art working projects are designed and verified using dedicated software programs. The present paper and software application is dedicate to blast waves effect on a room wall modelling and his but consist in the estimation of the exceptional loads that are not included in any known dedicated software

Keywords: JWL state equations, transport phenomenon, explosion modelling, volume finite methods

 

DOWNLOAD PDF