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| Prediction Method for Thermal-structural-vibrational Environment of Ramjet Engine |
| Received:December 26, 2016 Revised:June 15, 2017 |
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| DOI：10.7643/ issn.1672-9242.2017.06.014 |
| KeyWord:ramjet engine thermal-structural-vibration environment prediction |
| Author | Institution |
| HAN Cang-qin |
Beijing Electro-mechanical Engineering Institute, Beijing , China |
| ZHAO Bao-ping |
Beijing Electro-mechanical Engineering Institute, Beijing , China |
| SUN Jian-liang |
Beijing Electro-mechanical Engineering Institute, Beijing , China |
| WANG Da-peng |
Beijing Electro-mechanical Engineering Institute, Beijing , China |
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| Abstract: |
| Objective To study prediction method for thermal-structural-vibrational environment of ramjet engine under the action of pulsating pressure. Methods A mechanical model was established for the engine structure. The engine structure under normal and high temperature was tested. The finite element model was also compared and corrected. Based on the mechanical model obtained, pulsating pressure was applied to the engine structure in sections to calculate the vibration response of the engine structure. Results The result of prediction was basically in line with that of test. The feasibility and validity of method and technique adopted for vibration response analysis of ramjet engine were verified. Conclusion The thermal-structural analysis method could be used for predicting vibration environment of ramjet engine. Meanwhile, it might also be used for design optimization of ramjet engines. It has important engineering application value for dynamic environment prediction and structure tool design of fight vehicle in the initial development stage. |
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