CAJ | 학술논문

基于机械能守恒定律，推导了旋转叶片-机匣的碰摩表征模型。该模型不仅考虑了碰摩过程中叶片的弯曲变形，同时也考虑了由于碰撞导致的机匣变形，在表征模型中引入了机匣当量刚度。模型除可以对直板叶片-机匣之间的碰摩进行表征，还可应用于锥形叶片-机匣之间的碰摩。并且，该模型还考虑叶片的运行情况，即转速、摩擦因数等参数的影响，讨论碰摩力与各参数之间的关系。通过叶片-机匣碰摩试验得到的碰摩力数据，对该模型进行试验验证。通过分析发现新模型与试验结果吻合较好，并与现有模型对比，证明了新模型能更好地描述旋转叶片与机匣的之间的碰摩力。
기우궤계능수항정률，추도료선전협편-궤갑적팽마표정모형。해모형불부고필료팽마과정중협편적만곡변형，동시야고필료유우팽당도치적궤갑변형，재표정모형중인입료궤갑당량강도。모형제가이대직판협편-궤갑지간적팽마진행표정，환가응용우추형협편-궤갑지간적팽마。병차，해모형환고필협편적운행정황，즉전속、마찰인수등삼수적영향，토론팽마력여각삼수지간적관계。통과협편-궤갑팽마시험득도적팽마력수거，대해모형진행시험험증。통과분석발현신모형여시험결과문합교호，병여현유모형대비，증명료신모형능경호지묘술선전협편여궤갑적지간적팽마력。
A new characterization model for rotating blade-casing rub-impact is deduced based on the law of conservation of mechanical energy. This model includes not only the bending deflection of blade during rub-impact, but also the casing deformation due to impact with introducing the equivalent stiffness into characterization model. The model is used in rub-impact between the taper blade and the casing in addition to straight blade. Besides the operating conditions, such as, rotating speed, friction coefficient and so on, are also considered and the relation between the rub-impact force and each parameters is discussed. The model is verified by the rub-impact force data obtained through blade-casing rub-impact experimental test. It is shown that the model and test data are approximately identical, and the rub-impact force is described preferably by the new model through the comparison with existing models.