舰船内高能量密度电容过载爆炸损伤分析

Damage Analysis of High Energy Density Capacitor Overload Explosion in Warship Cabin

文中通过建立电容单元的过载爆炸能量等效模型,运用任意拉格朗日-欧拉(ALE)方法求解冲击波与结构的流固耦合过程,模拟电容组中电容单元的爆炸过程随不同电容单元间距,不同位置电容单元爆炸对整个电容组的损伤.分析不同工况下电容组的损伤结果,发现增加电容单元间距可以有效地降低电容组整体的损伤程度.在相同位置电容单元爆炸时,不同电容单元间距对正前方和正侧方的电容单元损伤不同:间距增加至2倍时,正前方最大位移约降低32.17%,正侧方电容单元的最大位移约降低24.19%;间距增至3倍时,正前方电容单元的最大位移约降低48.69%,正侧方电容单元的最大位移约降低41.13%.

By establishing the equivalent model of the overload explosion energy of the capacitor unit,the fluid-solid coupling process between the shock wave and the structure was solved by using the arbitrary Lagrangian-Euler(ALE)method,and the damage to the whole capacitor group caused by the explosion of the capacitor unit with different spacing and different positions was simulated.The damage results of capacitor banks under different working conditions were analyzed,and it was found that increasing the spacing of capacitor units can effectively reduce the damage degree of capacitor banks as a whole.When the capacitor unit explodes at the same position,the damage to the capacitor unit in front and right side is different with different spacing:when the spacing is increased to 2 times,the maximum displacement of the capacitor unit in front is reduced by 32.17%,and the maximum displacement of the capacitor unit in right side is reduced by 24.19%.When the spacing is increased to 3 times,the maximum displacement of the front capacitor unit is reduced by 48.69%,and the maximum displacement of the front capacitor unit is reduced by 41.13%.