双蒙皮热气防冰腔在加热防冰过程中,内、外蒙皮的温度相差较大,热膨胀变形将导致两层蒙皮之间的间隙发生变化,进而影响防冰效果,甚至堵塞防冰通道。以发动机唇口热气防冰系统为研究对象,为解决双蒙皮防冰腔的热变形问题,选择了在双蒙皮之间增加垫板进行补偿的方式,采用有限元方法对防冰腔的热变形情况进行仿真分析,得到了不同垫板数量条件下的防冰腔最大热变形区域、防冰腔的热变形情况及变化规律,为双蒙皮防冰腔的设计提供依据。 During the anti-ice heating process, the temperatures of the inner and outer skins vary greatly. The thermal expansion and deformation will cause the gap between the two skins to change, thus affecting the anti-ice effect and even plugging the anti-ice aisle. In order to solve the hot deforming problem of double-skin anti-icing cavity, a method of compensating for the increase of shim plates between the two skins was adopted. The finite element method The simulation results show that the maximum deformation area of ​​the anti-ice chamber and the thermal deformation of the anti-ice chamber are obtained under different pad numbers.