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某型无人机油箱振动试验夹具模态分析
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Abstract:
油箱振动试验夹具除模拟油箱安装结构以外，还是油箱振动试验验证中的主要传载部件，振动试验夹具的振动性能设计直接影响到振动试验的真实性和可靠性。本论文利用MSC.Patran/Nastran和Ansys两款软件进行了有限元模态和频率响应仿真计算，并通过夹具扫频试验进行了验证，说明了夹具计算分析和建模的准确性，同时验证了夹具满足后续油箱试验要求，为振动试验夹具设计提供了方法和思路，具有一定的工程应用价值和借鉴意义。
In addition to the simulated fuel tank installation structure, the fuel tank vibration test fixture is also the main transmission component in the fuel tank vibration test verification. The vibration performance design of the vibration test fixture directly affects the authenticity and reliability of the vibration test. In this thesis, finite element modal and frequency response simulation calcula-tions are carried out by using MSC.Patran/Nastran and Ansys software, and verified by fixture frequency sweep test. The accuracy of fixture calculation analysis and modeling is verified, and the fixture is verified. It satisfies the requirements of subsequent fuel tank test, and provides methods and ideas for the design of vibration test fixtures. It has certain engineering application value and reference significance.
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