摘要
以透平叶片为研究对象,采用LMS系统对叶片的静频和振型进行了测试。单只叶片的试验测试结果与数值计算结果吻合良好,说明所提供的叶片分析模型和静动态分析方法具有良好的工程精度,验证了有限元计算的准确性。结果显示,装配后叶片固有频率的分散度加大,因此在以后的装配过程中,需要对装配后各叶片固定力进行控制;如果控制难以实现,则必须对装配后的叶片的固有频率进行测试,使固有频率及其分散达到设计要求,为此类叶片的结构优化或性能优化以及叶片的再设计提供理论依据。
Static frequency and vibration mode of turbine blade were tested by LMS system. To the single turbine blade, compared the relative experimental test results with numerical conclusion, both are consistent. Analyzing model and turbine blade model of turbine blade were of good accuracy, and the finite element calculation was used to validate the method. The results showed that the blade natural frequency disperse was increased by after assembling,, so the turbine blade of fixing force for the assembly process was controlled, if the controlling of fixing force was difficult to realize, the turbine blade natural frequency was tested by after assembling and make its performance reach the design requirements. It can provide theoretical basis for redesign of the blade.
出处
《新技术新工艺》
2011年第8期90-93,共4页
New Technology & New Process
基金
陕西省教育厅科研计划项目(11JK0847)
宝鸡文理学院院级重点项目(ZK09157)
关键词
透平叶片
固有频率
测试
Turbine blade, Natural frequency, Test
