【摘要】 本文采用改进的自由界面模态综合技术分析船舶轴系扭振问题,即将复杂的多分支扭振系统或含有变参数联轴节的轴系划分为若干个具有简单形式的子结构,选取各子结构低阶模态参加综合,从而减少运算量,提高分析效率,且易于将离散模型和连续模型联合使用。更多还原

【Abstract】 In this paper, an improved technique of free-interface mode synthesis is described. The problem of torsional vibration of marine shafting is analysed by using this new method. The complex system of torsional vibration of marine shafting with multibranches or couples of variable parameters is divided into many substructures. The lower-frequency normal modes of every substructures are selected to participate in the synthesis. Thus, the calculated working load is reduced and the analytical efficiency is raised. In addition, this method is easy to unite separable model and continuous model.更多还原