摘要
针对民用飞机水上迫降撞击压力问题缺乏合适的理论分析方法的问题,基于Dytran考虑水-空气两相流体与飞机结构之间的相互耦合作用,通过一般耦合算法实现流固耦合计算;对民用飞机水上迫降过程中机身底部着水压力载荷和着水过程中的飞机俯仰角进行有效数值模拟与水上迫降载荷处理.飞机结构入水时压力在初期达到峰值,然后衰减,在峰值过后会出现小幅波动.
Because there is no rational theoretic analysis method for the ditching impact pressure load of civil aircraft, based on Dytran, the fluid-solid coupling calculation is implemented by the general coupling algorithm considering the coupling interaction between water-air biphasic fluid and aircraft structure; the pressure at the bottom of civil aircraft and pitch angle during ditching are numerically simulated and the ditching load is processed effectively. The pressure of aircraft during landing in water reaches maximum value at the initial stage and then begins to decrease, and it fluctuates slightly after the peak value.
出处
《计算机辅助工程》
2013年第6期51-54,共4页
Computer Aided Engineering
