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研究以连接效结构中置入粘弹性材料时，预紧力大小改变时引起铰点约束刚度变化对模态性能的影响．给出了平移约束刚度和旋转约束刚度变化时结构模态参数变化的解析表达式．可以分析两个参数同时变化的固有频率和损耗因子变化的三维图．可获得对应最大损耗因子约束参数．可为结构的被动控制设计提供一定的指导．
The effect of changing the constraint stiffness of the hinge point on the modal properties caused by the change of the pretightening force when the viscoelastic material is inserted into the connection structure is studied. The analytical expressions of the modal parameters of the structure under the constraints of the translationally constrained stiffness and the rotational restraint stiffness are given. It is possible to analyze three-dimensional plots of both natural frequency and loss factor changes simultaneously for both parameters. Corresponding to the maximum loss factor constraint parameters. It can provide some guidance for the passive control design of the structure.