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对非均匀静子叶片分布影响下的失谐流体激励叶盘结构响应特性进行研究.首先推导叶盘结构强迫共振条件与流体失谐设计理论;其次对工程叶盘结构响应分析的模态减缩方法和精细积分法进行理论描述;最后给出数值算例,对谐调和失谐流体激励特性和实际工程叶盘的响应特性进行研究,分析流体失谐设计方法对叶盘强迫响应的影响.在响应特性计算中,通过有限元方法得到叶盘的系统质量、阻尼和刚度矩阵后,利用MATLAB软件编制程序进行响应特性分析.
The research on the response characteristics of the impeller disc structure under the influence of the distribution of the non-uniform stator vanes is firstly carried out.Firstly, the theory of the forced resonance of the impeller disc structure and the design theory of fluid detuning are derived. Secondly, the modal reduction method Finally, a numerical example is given to study the excitation characteristics of the harmonic mismatch fluid and the response characteristics of the actual engineering leaf disc, and the influence of the fluid detuning design method on the forced response of the leaf disc is analyzed. In the response characteristics In the calculation, the system quality, damping and stiffness matrix of the leaf disc were obtained by finite element method, and then the response characteristics were analyzed by MATLAB software.