The invention relates to a vibration forecasting modeling method for a ring rib cone-column combined shell, which comprises the following steps of: deducing a dynamic stiffness matrix of a conical shell from basic conical shell vibration response solution, degenerating the conical shell into a cylindrical shell and an annular plate by changing a cone vertex angle of the conical shell, and then, carrying out vibration forecasting modeling on the cylindrical shell and the annular plate by taking the conical shell, the annular plate and the cylindrical shell as basic substructures. The method comprises the following steps of: splicing a plurality of substructure shells by utilizing the conditions of displacement continuity and internal force balance on a splicing surface of the combined shell to form an overall dynamic stiffness matrix of the combined shell under a global coordinate system, and forecasting the inherent frequency and vibration response of the combined shell by utilizing the dynamic stiffness matrix.
本发明涉及一种环肋锥‑柱组合壳的振动预报建模方法,从基本的圆锥壳振动响应求解出发,推导圆锥壳动刚度矩阵,通过改变圆锥壳的锥顶角度,将圆锥壳退化成圆柱壳和圆环板,再以圆锥壳、圆环板和圆柱壳三个为基础子结构,利用组合壳拼接面上的位移连续与内力平衡条件,将多个子结构壳体进行拼接,形成在全局坐标系下的组合壳体的整体动刚度矩阵,利用该动刚度矩阵,对组合壳的固有频率和振动响应进行预报。
Vibration forecasting modeling method for ring rib cone-column combined shell
一种环肋锥-柱组合壳的振动预报建模方法
2025-01-28
Patent
Electronic Resource
Chinese
European Patent Office | 2024
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