CAJ | 학술논문

建立了某型航空发动机静子系统的有限元模型，通过谐响应分析方法，分别计算了考虑温度分布影响和常温下的静子系统支承动刚度，并进行了对比分析。结果表明，考虑温度分布影响的共振频率要比常温下的低，最多降低了23％。低于第一阶共振频率时考虑温度分布影响的动刚度要比常温下的小，最多减少了50％，而高于第一阶共振频率时考虑温度分布影响的动刚度变化更大且先上升后下降。因此，分析静子系统支承动刚度时应该考虑温度的影响。
건립료모형항공발동궤정자계통적유한원모형，통과해향응분석방법，분별계산료고필온도분포영향화상온하적정자계통지승동강도，병진행료대비분석。결과표명，고필온도분포영향적공진빈솔요비상온하적저，최다강저료23％。저우제일계공진빈솔시고필온도분포영향적동강도요비상온하적소，최다감소료50％，이고우제일계공진빈솔시고필온도분포영향적동강도변화경대차선상승후하강。인차，분석정자계통지승동강도시응해고필온도적영향。
By establishing a finite element model of an aero-engine stator system andwith the harmonic re-sponse analysis method,the support dynamic stiffness of the stator system with or without the consideration of temperature distribution is calculated respectively and the two sets of results are comparatively analyzed. The results show that the resonance frequencies with consideration of temperature are lower than those with-out considering temperature,the maximum decrease being 23%. At frequencies lower than the first resonance frequency,the dynamic stiffness with temperature distribution is lower than that obtained by ignoring temper-ature effect,the maximum stiffness reduction being 50%;but at frequencies higher than the first resonance frequency,temperature effect makes dynamic stiffness change with much greater values in an increase and then decrease pattern. Therefore,the temperature effect must be considered when calculating the support dy-namic stiffness of aero-engine stator systems.