| 组数与组间刚度对成组叶盘振动局部化的影响 |
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| 引用本文： | 王艾伦,龙辉.组数与组间刚度对成组叶盘振动局部化的影响[J].广西大学学报(自然科学版),2012,37(3):567-572. |
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| 作者姓名： | 王艾伦 龙辉 |
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| 作者单位： | 中南大学高性能复杂制造国家重点实验室,湖南长沙,410083 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 组数和组间刚度是影响成组叶盘振动特性的两个重要结构参数。本文基于成组叶盘的集中参数模型,推导了成组叶盘的振动方程,计算得到了不同组数和组间刚度下失谐成组叶盘的振动响应局部化因子,分析了组数和组间刚度对失谐成组叶盘的振动响应局部化的影响规律。结果表明:在叶片总数一定的情况下,随着叶片组数的减少,失谐成组叶盘的局部化程度明显降低;而随着组间刚度的增大,失谐成组叶盘的局部化程度先增大后减小,最终保持在相对稳定状态。研究结果可以为成组叶盘的优化设计提供一定的理论支持。
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| 关 键 词： | 组数 组间刚度 成组叶盘 失谐 振动局部化 |
Effect of group number and group coupling stiffness on vibration localization of grouped blade disk |
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| WANG Ai-lun
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LONG Hui.Effect of group number and group coupling stiffness on vibration localization of grouped blade disk[J].Journal of Guangxi University(Natural Science Edition),2012,37(3):567-572. |
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| Authors: | WANG Ai-lun LONG Hui |
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| Institution: | (National Key Laboratory of High performance and Complex Manufacturing, Central South University,Changsha 410083,China) |
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| Abstract: | Group number and group coupling stiffness are two important structural parameters of grouped blade disk.Based on the lumped parameter model,the vibration equation of grouped blade disk was derived.The vibration response localization factor of mistuned grouped blade disk was calculated for different group number and group coupling stiffness.The effect of the group number and group coupling stiffness on localization was analyzed.The results show that when the sum of blades is certain,the reduction of group number can significantly reduce the level of localization.With the increasing of group coupling stiffness,the localization increases first and then decreases,and remains relatively stable state finally.The results can serve for the optimization design of the grouped blade disk |
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| Keywords: | group number group coupling stiffness grouped blade disk mistuning vibration response localization |
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