大型涡轮机组抗冲击性能数值研究

为找出舰船设备在受冲击时的薄弱环节,保证舰船战斗力,有必要分析舰用设备的抗冲击能力。分析了舰用涡轮机组的抗冲击能力,使用ProE软件建立涡轮机组三维几何模型,并利用HyperMesh软件进行有限元网格划分。将有限元模型导入ABAQUS软件,基于显示求解器对涡轮机组抗冲击能力进行时域计算。结果表明：典型部位轴承的响应更剧烈,压气机主轴的响应则相对复杂,应予以保护;涡轮机组在冲击校核工况下具有足够的安全性,且设备的薄弱环节主要集中在框架与底架搭接处,以及轴承、齿轮啮合齿和连接螺栓处等构件连接部位。

Numerical Research on Shock Resistance of Large-Sized Turbines

In order to find the weak links of the ship equipment suffered attack and ensure its fighting strength,it is necessary to analyze the shock resistance of marine turbine.The three-dimensional geometrical model of the turbine was built by the ProE and the finite element（FE） mesh was built by the HyperMesh.Then the FE model is imported in the ABAQUS software and the shock resistance of the turbine was calculated in time domain based on the explicit solution.The results show that the shock responses of the bear at typical parts of the turbine are intense,and the response of the spindle of compressor is relatively complex,which should be protected.The turbine has enough security in shock assessment condition,and weak links of the shock resistance are found out mainly at lapped joint of frame,chassis under frame,the joints among the shaft bearing,gear mate and bolt.