针对复杂的离心式压缩机的叶轮叶片的载荷识别，提出了一种新的Hermitian小波壳单元。Hermitian小波壳单元代入逆Newmark算法构造激励载荷与响应信号的传递矩阵，从而进行载荷识别。通过响应信号与传递矩阵求解载荷。根据实验数据，Hermitian小波单元识别载荷的精度远远高于商业软件ANSYS。实际工程应用中，商业软件ANSYS可以分析复杂模型，而在关键区域可以采用Hermitian小波单元分析。
Abstract
New Hermitain cubic spline wavelet on interval (HCSWI) shell elements were proposed for the load identification of centrifugal compressor impeller blades. The Hermitian wavelet shell elements and the inverse Newmark algorithm were applied to construct the transfer matrix between excitation and response signals. The load identification was solved based on the transfer matrix method and response signals. The accuracy of the Hermitian wavelet shell elements was verified by comparing the load identification results with those by ANASYS elements as well as the experimental data. The Hermitian wavelet finite element method is of the advantage of high accuracy. In practical engineering, the commercial software ANSYS can be used to analyze a complex mechanical model, however, for the crucial components, the Hermitian wavelet elements might be used instead of ANSYS elements.
关键词
Hermitian小波壳单元 /
载荷识别 /
传递矩阵
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Key words
Hermitian wavelet shell elements /
load identification /
transfer matrix
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参考文献
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