Influences of Tendon Prestressing Force on the Damage Effect of Aircraft Impacting on the Nuclear Containment

In order to study the influences of tendon prestressing force on the protective performance, the fine FE models of Ling-ao prestressed containment and the A320 large commercial aircraft were established, respectively. The impact process was simulated by using the commercial FE software LS-DYNA, and the aircraft velocity was set 215 m/s impacting on the weakest position of nuclear containment. The results show that the impact force-time history curves are similar to those presented by other related literatures. With the increase of prestressing force, the containment damage becomes slighter and the maximum impact displacement decreases to a stable value. Besides, a formula of maximum impact displacement with different prestressing forces is fitted.