The invention discloses a free vibration suppression structure based on bistable-linear coupling, and a linear grillage. The suppression structure comprises a linear beam, a vertical linear spring, atruss, and a truss supporting structure for supporting the truss. The linear beam is parallel to the truss supporting structure, and a sliding groove is formed in the length direction of the truss supporting structure. The truss comprises two rigid supporting rods and transverse linear springs, one ends of the two rigid supporting rods are hinged, and the other ends of the two rigid supporting rods are connected with the truss supporting structure through the transverse linear springs. The truss is installed in the sliding groove, the other ends of the rigid supporting rods of the truss can slide along the sliding groove, and in the initial state, an included angle is formed between the rigid supporting rods and the sliding groove. The top of the truss is coupled with the linear beam through the vertical linear spring. The suppression structure is completely composed of the rigid components and the springs, so no viscous damping material exists, static high rigidity and dynamic high dissipation of each single component are achieved, and the free vibration suppression efficiency is improved under the condition that structural bearing is guaranteed.
本发明公开了一种基于双稳态‑线性耦合的自由振动抑制结构及线性板架,其中,抑制结构包括线性梁、竖向线性弹簧、桁架以及支撑桁架的桁架支撑结构;所述线性梁与桁架支撑结构平行设置,沿桁架支撑结构长度方向设有滑槽;所述桁架包括刚性撑杆和横向线性弹簧,所述刚性撑杆为两根,两根刚性撑杆的一端铰接,另一端通过横向线性弹簧与桁架支撑结构连接;所述桁架安装在滑槽内,其刚性撑杆的另一端可沿滑槽滑动,在初始状态下,刚性撑杆与滑槽呈夹角设置;所述桁架的顶部通过竖向线性弹簧与线性梁耦合;本发明抑制结构完全由刚性构件和弹簧构成,无粘性阻尼材料,实现了单一构件静态高刚度和动态高耗散,在保证结构承载条件下提高自由振动抑制效能。
Free vibration suppression structure based on bistable-linear coupling, and linear grillage
基于双稳态-线性耦合的自由振动抑制结构及线性板架
2020-04-10
Patent
Electronic Resource
Chinese