某发动机进气管热模态分析

掌握波纹管的振动特性并使其固有振动频率合理分布是发动机动力学研究的重要内容之一。在分析发动机进气管振动对发动机影响的基础上，建立了某发动机进气管的有限元分析模型。通过仿真计算得到了热振动模态参数，验证了进气管设计的合理性。结果表明，结构温度发生显著变化并引起热应力，进一步影响到结构的固有振动特性，为发动机进气管的动力响应分析和进一步的结构优化设计提供理论参考依据。

Thermal Mode Analysis of Engine Inlet

Corrugated tubes is important for designer to study the vibration characteristics and vibration frequency distributions.This paper builds an FEM model for the engine barrel tube and obtains its Thermal vibration modal parameters.The result validates the design of the Corrugated tubes is rationality.The calculation results show Structural temperature will increase evidently so as to have a serious effect on the characteristic of structural natural vibration during the process of heating.and offers some refer...