为了检验一台旋转引擎的过程,主要压缩机由鸟影响了,在板上影响的一只鸟的一个有限元素模型与明确的代码 PAM 碰撞被开发。因为不显示出不稳定性的迹象并且正确地为鸟的打破起来建模进粒子的 SPH 方法,光滑的粒子水动力学(SPH ) 方法被用来模仿鸟。在模拟结果和试验性的结果之间的好同意显示在现在的纸使用的鸟罢工的数字方法是合理的。然后,主要压缩机由三只不同配置鸟影响了的一台旋转引擎说出直结束的柱体鸟,四角形的鸟,半球结束的鸟用数字模拟方法被调查。鸟罢工的整个过程支撑了大约 3.5 ms,鸟被片在罢工期间猛砍,这被发现。鸟的几何学配置严重地影响了排水量和一些片的 von 协定应力,就因为碎鸟团被鸟配置影响。万一鸟在这个地点上罢工在片可以开发的一些上面,塑料变丑和它为引擎的安全工作是很不利的。
In order to examine the process of a rotary engine primary compressor impacted by bird, a finite element model of a bird impacted on plate is developed with the explicit code PAM-CRASH. The smooth particles hydrodynamic (SPH) method is used to simulate the bird because of the SPH method showing no signs of instability and correctly modeling the breaking-up of the bird into particles. Good agreement between the simulation results and experimental results indicates that the numerical method of bird strike used in the present paper is reasonable. Then a rotary engine primary compressor impacted by three different configurations bird named straight-ended cylinder bird, quadrangular bird, hemispherical-ended bird are investigated using the numerical simulation method. It is found that the whole process of bird strike sustained about 3.5 ms and the bird is slashed by blade during the strike. The geometry configuration of bird affected the displacement and von Mises stress of some blades severely, just because the breaking bird's mass is affected by the bird's configuration. In the event of bird striking on the site of"up"some blades may develop plastic deformation and it is very adverse for the safety work of the engine.