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针对通用流固耦合算法在模拟实体元结构破坏上的不足,以MSC.DYTRAN软件为平台,研究了不考虑和考虑失效的实体元平板叶片流固耦合数值模拟方法。在此基础上,建立了实体元空心叶片鸟撞瞬态动力学有限元模型,计算分析了叶片在稳定旋转状态下遭受不同密度、长度、半径及速度鸟体撞击下的叶片应力的瞬态响应,计算表明:上述参数值增加均会增大叶片的应力峰值,并且对应力峰值的影响都不是线性的。最后模拟了叶片的失效过程。
Aimed at the deficiency of general solid-liquid coupling algorithm in simulating solid element structure destruction, the numerical simulation method of fluid-solid coupling of solid element plate blade without considering and considering failure is studied by using MSC.DYTRAN software as platform. On this basis, the transient dynamic finite element model of aviary impact of solid elemental hollow blade was established, and the transient response of the blade subjected to impact with different density, length, radius and velocity was calculated and analyzed. The results show that the increase of the above parameters will increase the stress peak of the blade, and the impact on the stress peak is not linear. Finally, the failure of the blade simulation process.