| 燃烧室模型倒角对结构声影响的数值计算 |
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| 引用本文： | 郭晓玲,艾延廷,姜苏,李松金.燃烧室模型倒角对结构声影响的数值计算[J].沈阳航空工业学院学报,2012,29(3):10-15. |
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| 作者姓名： | 郭晓玲 艾延廷 姜苏 李松金 |
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| 作者单位： | 1. 沈阳航空航天大学航空航天工程学部(院),沈阳,110136
2. 中国人民解放军93032部队73分队,吉林松原,138000 |
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| 摘 要： | 针对贫油预混燃烧的研究，建立了燃气涡轮发动机燃烧室实验装置。研究在实际的制造过程中结构倒角对整体装置的影响。取燃烧稳定部分结构段进行计算分析，通过有限元软件ANSYS模拟计算了倒角对结构模型和声模型固有频率的影响；并结合SYSNOISE，计算了燃烧室结构段模型分别在理想情况和考虑倒角情况下的振动特性和声学特性；得出了结构振动响应和产生的瞬态声场特性与结构模型几何特性密切相关。
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| 关 键 词： | 声振特性 结构模态 声模态 有限元 倒角 声场 |
The numerical calculation of the effects of combustion chamber chamfering on structure-borne sound |
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| GUO Xiao-ling
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AI Yan-ting
,
JIANG Su
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LI Song-jin.The numerical calculation of the effects of combustion chamber chamfering on structure-borne sound[J].Journal of Shenyang Institute of Aeronautical Engineering,2012,29(3):10-15. |
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| Authors: | GUO Xiao-ling AI Yan-ting JIANG Su LI Song-jin |
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| Institution: | 1. Faculty of Aerospace Engineering, Shenyang Aerospace University, Shenyang 110136; 2. PLA Unit 93032 Element73, Songyuan Jilin 138000) |
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| Abstract: | A test rig representative of a gas turbine combustion chamber is built for the study of lean premixed combustion. This article is to study the influence of the chamfer on the overall device during the actual manufacturing process. The structure with stable burning was calculated and analyzed. The influence of the chamfer on the natural frequency of the structural model and the acoustic model was simulated and calculated by finite element software ANSYS. The vibration characteristics and acoustic characteristics were calculated respectively in the ideal situation and in the situation considering chamfer, using SYSNOISE. The results show that the structural vibration response and the generated transient sound field are closely related to the geometric characteristics of the structural model. |
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| Keywords: | acoustics and vibration characteristics structure modal sound modal finite element method chamfering sound filed |
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