BEM：叶片单元模型

“叶片单元模型”（Blade Element Model，简称BEM）是航空航天及军事工程领域常用的技术术语。该模型主要用于分析螺旋桨、旋翼等旋转部件的力学性能。为便于书写和交流，行业内普遍将其缩写为BEM，既简洁又高效，广泛应用于相关技术文档及专业讨论中。

This paper discussed the methods for treating the boundary conditions of T steam turbine blade by finite element model analysis, analyzed the influence of various of the boundary conditions on the natural frequency of blade, and advanced the elastic computing model simulated the boundary conditions.
对汽轮机叶片有限元模态分析的边界条件处理方法进行了探讨，分析了各种边界条件对叶片自振频率的影响。
Research on Boundary Conditions of T Steam Turbine Blade by Finite Element Model Analysis
汽轮机T型叶根有限元模态分析边界条件的研究
Based on blade element methods, calculation model of multi-stage axial flow compressor is built in the paper.
基于基元叶栅法建立了多级轴流式压气机的计算模型。
In the model, the modified blade element analysis theory is used to model the rotor, and the modified momentum theory is used to calculate the induced velocity.
其中旋翼模型采用改进了的叶元法，旋翼诱导速度计算采用改进了的动量法。
The Campbell chart is drawn to analyze the resonance speed of the turbine blade. ( 3 ) The finite element model of turbine blade with zigzag shroud is built. The stress of the blade is analyzed under different work rotation speeds.
绘制了叶片的Campbell图，分析了该汽轮机叶片的共振转速。（3）建立了带Z型冠叶片的有限元模型，分析了工作转速下的叶片应力。

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