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应用Euler-Bernouli梁理论建立薄壁杆系结构件的连续体模型,通过适当处理该模型中的边界条件,提高了建模精度。在对该类结构进行动态子结构综合时用连续体模型的特征函数确定子结构特征向量,避免了常规子结构综合法的特征向量的多次计算。本文子结构综合法的计算结果与有限元进行了对比,两者结果较好的吻合
The Euler-Bernouli beam theory is used to establish the continuum model of the thin-walled pole structure, and the modeling accuracy is improved by appropriately processing the boundary conditions in the model. When this kind of structure is used for dynamic substructure synthesis, the substructure feature vector is determined by the feature function of continuum model, which avoids the multiple computation of the eigenvectors of the conventional substructure synthesis method. The results of the son structure synthesis method are compared with those of the finite element method. The results of the two methods are in good agreement