Random vibration response analysis of hypersonic flight vehicle ramjet combustor chamber structure
-
摘要: 利用高超声速冲压发动机燃烧室结构试验结果完成了地面试验状态下燃烧室壳体复杂结构随机振动响应分析,并与试验结果进行了对比分析,试验验证了所采用的飞行器复杂结构随机振动响应分析方法和技术途径.在此基础上,采用试验压力载荷数据,对飞行状态下燃烧室结构的随机振动响应进行了分析,得到燃烧室结构加速度响应的功率谱密度曲线及均方根值,该项工作对飞行器的动力环境初步预示工作具有重要的工程应用价值.Abstract: The testing results of combustion chamber structure of hypersonic ramjet were used, which finished the analysis to structure random vibration response of combustion chamber shell. Meanwhile, both of them were compared ,which gave us a satisfied consequence. The analysis and technology method of random vibration response of vehicle complex structure were verified by this test. On the basis of that by taking advantage of pressure load data and analysising the random vibration response of combustor chamber in flight regime, the RMS(Root Mean Square) and PSD(Power Spectral Density) of acceleration response were presented, which was very important to the work of preliminary of dynamic environment of fight vehicle.
-
Key words:
- hypersonic /
- ramjet /
- combustor chamber /
- random vibration /
- response analysis
-
[1] 徐孝诚,王成华,韩增尧. 再入飞行器复杂结构随机振动响应分析研究[J].强度与环境,2002,29 (3):1-4 Xu Xiaocheng,Wang Chenghua,Han Zengyao. Study on random vibration response analysis of reentry vehicle complex structure[J]. Structure & Environment Engineering,2002,29 (3) : 1-4(in Chinese) [2] Wei Gao. Random seismic response analysis of truss structures with uncertain parameters[J]. Engineering Structures,2007(29):1487-1498 [3] Alkhaleefi A M,Ali A. An efficient multi-point support-motion random vibration analysis technique[J]. Computers and Structures,2002(80):1689-1697 [4] 成伟,何铁宁. 随机振动响应计算在ANSYS中的一种实现方法[J]. 西南交通大学学报,2002(34):102-104 Cheng Wei,He Tiening. New calculation method for calculating structural responses to random vibrations[J]. Journal of Southwest Jiaotong University,2002(34):102-104(in Chinese) [5] 尹立中,徐孝诚. 再入飞行器的气动噪声响应分析和试验验证[J].导弹与航天运载技术,2002(3):113-115 Yin Lizhong,Xu Xiaocheng. Response analysis and experimental verification for reentry vehicle subjected to aerodynamic noise[J]. Missiles and Space Vehicles,2002 (3):113-115 (in Chinese) -
点击查看大图
计量
- 文章访问数: 3305
- HTML全文浏览量: 216
- PDF下载量: 1189
- 被引次数: 0
下载:
