The latter lies in an excessive pre-twisted angle of the originally designed blade shrouds,a relatively small fillet radius R at the blade shroud concave and improper assembly procedures.

Based on contact forms,a reasonable judgment can be given about structural design;based on contact parameters,the damping effects of blade shrouds are evaluated.

The stresses of LP turbine blades with different pre-twist shroud angles are calculated at aeroengine operating condition.

By applying the harmonic balance method and time-frequency transfer method,the relationship between the shroud structural parameter and shroud mechanics performance at the installation was analyzed.

The development and application of solid turbine technique and twisted blade technique are analyzedin this paper,And then the prospect of solid turbine with ring and twisted blades is also discusse

6 bearing in a turbo-generator of an power plant increased sharply was analyzed in this paper,and the reason was concluded that blade ring broken near the adjusting valve of the second-last stage of LPII rotor,this paper gives a reliable suggestion for the turbo-generator with the result that the default was eliminated.

0,built a finite element model of Ⅰdynamic shrouded blade.

The shrouded blades are useful to reduce the response.

This article analyzes the cause of interlock when using MS - 4201 switch I/o plate as control panel to control stepping motors on industrial control ma chine,and gives the solution to the interlock.

Contrapose the designs of programmes which be used in the current types of intellectual competi- tion quia machine,on the basis of analyzing their advantages and disadvantages of each,to modify the cir- cuit,in order that it can realize interlocking and autolocking,and clue on results on voice and digital at one time well and truly.