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Faculty of Technological Studies, PAAET, P.O. Box 42325, Shuwaikh 70654, Kuwait

ABSTRACT

This paper attempts to examine the behaviour of concrete containment vessels under impact loads. Three-dimensional dynamic finite element analysis is proposed. The analysis includes the non-linear behaviour of concrete, structural damping and cracking. A combination of solid isoparametric, panel and line elements representing vessel concrete, steel lining- and prestressing tendons or conventional steel, respectively, is suggested. Three-dimensional computer program OBAID is developed which gives timedependent interactive calculations for stresses, deflections, cracks, reinforcement and suitable wall and dome thicknesses. An existing concrete containment vessel for pressurized water reactor (PWR) is examined under aircraftcrash load.