摘要
以某型航空发动机压气机四、六级叶片为研究对象,考虑发动机实际工作时的温度及叶片扭向的影响,首先计算了压气机叶片振动的静频值及发动机特定转速下的动频值。通过函数拟合,得到了压气机叶片振动的动频与静频及发动机转速的关系式,给出了在更接近于实际工作状态下计算某型发动机任意转速下叶片动频的方法,指出了所得关系式与传统关系式相比,其优点在于既包括了温度的影响又恰当地反映了叶片扭向的影响。
Taking the fourth and the sixth stage blades of a certain aero - engine compressor for example, the blade static frequencies and the kinetic frequencies in some given revolutions are first calculated in consideration of the effects of both temperature corresponding to compressor blade working state and blade twist. Then, the relationship between the static frequency and the kinetic frequency is obtained by fitting the calculated results. Compared with the traditional relationship, the present relationship reflects the effects of both temperature and blade twist. By this relationship, not only the kinetic frequency can be obtained at any blade velocity, but also the result is close to the real one correlating to the practical blade working state.
出处
《空军工程大学学报（自然科学版）》
CSCD
北大核心
2005年第5期5-7,共3页
Journal of Air Force Engineering University(Natural Science Edition)
基金
陕西省自然科学基金(2003E115)
空军工程大学学术基金资助项目(2002X18)
关键词
叶片振动
叶片扭向
温度
静频
动频
blade vibration
blade twist
temperature
static frequency
kinetic frequency
