Numerical analysis of the influence of the blast wave on the composite structure

The paper presents an application of the meshless smoothed particle hydrodynamic (SPH) method in modeling of the explosion phenomenon. As the example the influence of blast wave on the composite structure is presented. The considered composite structure consists of the aluminium alloy honeycomb core covered by face sheets made of metal matrix composite reinforced with ceramic particles. The material properties of this complex structure are obtained on the base of the multi-scale material modeling technique. The elasto-viscoplastic constitutive material model including strain rate effects is taken into consideration in the presented numerical simulation.Original Abstract: Straipsnyje pateikiamas betinklines vienalyciu daleliu hidrodinamikos (SPH) metodo taikymas sprogimo reiskinio modeliavimui. Kaip pavyzdys pateiktas sprogimo bangos poveikis kompozicinei konstrukcijai. Tiriama kompozicine struktura susideda is aliuminio lydinio korines serdies padengtos lakstais pagamintais is keraminemis detalemis sutvirtintos metalines matricos. Sios sudetines konstrukcijos medziagu savybes randamos pasitelkiant daugiasluoksniu medziagu modeliavimo technika. Pateiktame skaitmeniniame modeliavime tampriosios-viskoplastines sudedamosios medziagos modelis ivertina deformaciju greicio itaka.