瞬态激振下燃气轮机的振动特性

文章说明了利用瞬态激振,即锤击法,研究燃气轮机振动特性的试验及分析方法。指出锤击法比其它激振法如正弦激振等具有设备简单,使用方便,测试分析迅速,结果可靠等优点。利用此方法对复杂结构进行结构振动特性分析是可行的。此法可用于分析汽轮机、锅炉、泵、风机和发电机等结构。这种试验分析方法在工程中有很大的实用价值。

VIBRATION CHARACTERISTICS OF GAS TURBINES UNDER TRANSIENT EXCIT EXCITATIONS

This paper deals with a testing and analytical method for studying gas turbine vibration characteristics by use of transient excitations, i. e. hammering method. In comparision wts other excitation techniques (such as sinusoidal excitations)the hammering method has severalt advantages. It entails only simple equipmnt and is easy to use with the time needed for testine ana analysis being markedly reduced and reliable results assured.It is feasible to use thg above-mentioned method to conduct analyses of structural vibration chararteristics for structures of complicated configurations such as, steam turbines, boilers, pumps, fans and electric generae ors, etc. The method recommended in this paper can be very helpful and effective in varioni hngineering applications.