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首页> 外文会议>International Symposium on Stability Control of Rotating Machinery(ISCORMA-4); 20070827-31; Calgary(CA) >LOW-PRESSURE TURBINE ROTOR CRACK INFLUENCE ON DYNAMIC STATE OF LARGE POWER TURBO-SET - NUMERICAL ANALYSIS
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LOW-PRESSURE TURBINE ROTOR CRACK INFLUENCE ON DYNAMIC STATE OF LARGE POWER TURBO-SET - NUMERICAL ANALYSIS

机译：低压涡轮转子裂纹对大功率涡轮机组动力状态的影响-数值分析

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The paper presents the study of crack section influence on 200 MW turbo-set dynamics. Rotor is founded on slide bearings. The research was made in a way of computer simulation. The computer code and mathematical model of rotor and its dynamic load are briefly presented. Crack is placed in low-pressure turbine in a few different sections (separately) and four angular positions in each section. It is assumed that crack depth is 45% of shaft diameter. It gives a possibility to compare their influence on machine vibration and find less and more dangerous cases (crack locations). The most interesting computational cases were discussed more particularly - they exemplify some phenomena caused by the crack that may occur in rotor vibratory response.
机译：本文介绍了裂纹截面对200 MW汽轮发电机组动力学的影响的研究。转子基于滑动轴承。该研究是以计算机模拟的方式进行的。简要介绍了转子的计算机代码和数学模型及其动载荷。裂纹被放置在低压涡轮机的几个不同部分中（分别），每个部分中有四个角位置。假定裂纹深度为轴直径的45％。可以比较它们对机器振动的影响，并发现越来越少的危险情况（裂纹位置）。更具体地讨论了最有趣的计算情况-它们举例说明了由转子振动响应中可能出现的裂纹引起的一些现象。

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