Based on the excellent cushioning performance of airbag,an ellipsoidal anti-collision airbag for pier was designed,and the protective deformation and energy dissipation process of the airbag were analyzed by LS-DYNA software.The results show that under the protection of the airbag,the stress on the pier is reduced by 64.66％,and the impact time is prolonged by 330.95％.The impact energy dissipated by the airbag in the form of deflation reaches 61.33％of the initial kinetic energy of the ship,which has obvious protective performance for both the ship and the pier,and it can deflate itself to return to the initial state,achieving the"three non-bad"of the pier,the ship and the anti-collision device.The initial internal pressure,exhaust threshold and vent area which affect the airbag protec-tion performance during the airbag deployment are analyzed,and the optimal initial internal pressure interval,optimal exhaust threshold and optimal vent area interval are given.
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万方数据