Three-element vibration damping device connecting damper element with inerter in parallel manner, design method of three-element vibration damping device and assembly method of three-element vibration damping device
A vibration damping device and damping unit technology, which is applied in the direction of inertial effect shock absorbers, shock absorbers, shock absorbers, etc., can solve the problems of positive stiffness energy consumption of spring units, difficult adjustment, easy oil leakage, etc. Eddy current damping coefficient, compact structure, easy disassembly and assembly
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Embodiment 1
[0050] like Figure 1 to Figure 6 As shown, a kind of ternary damping device with parallel damping and inertial unit in this embodiment includes a spring unit, a damping unit and an inertial unit, and the damping unit and the inertial unit are connected in parallel with the spring unit in series; the The damping unit includes a ball screw system, a plurality of conductor plates 5, two E-shaped iron cores 16 and multiple sets of first energized coils 15. In this embodiment, the number of conductor plates 5 is three, and they are arranged parallel to each other. It is a circular plate, and the first energized coil 15 adopts four groups; the ball screw system includes a ball screw 2 and a ball nut 18 sleeved on the ball screw 2, the inertia unit includes a flywheel 17, and the ball screw The screw mandrel 2 passes through the ball nut 18, the flywheel 17 and the conductor plate 5 sequentially from top to bottom; the spring unit includes a moving electromagnet 8, a fixed electroma...
Embodiment 2
[0075] Embodiment 2. This embodiment provides a calculation example of the design method of a ternary damping device with parallel damping and inertial mass units, specifically:
[0076] Yueyang Dongting Lake Bridge is located at the interface between Dongting Lake and the Yangtze River. It is a super-large highway bridge connecting Yueyang and Huarong, with a total length of 5747.82m. A total of 222 cables are arranged on the whole bridge. After testing, the A11 cable force downstream of the Yueyang side tower is 3095N, the first-order modal frequency is 1.11Hz, the cable length is 114.72m, and the unit mass is 51.8kg / m.
[0077] Taking the A11 cable as the damping object, the optimal design of the ternary damping device with parallel damping and inertial units for the first-order mode: a refined analysis model for the coupling system of the cable-stayed cable and the ternary damping device based on the finite difference method , using the Runge-Kutta method to solve the free...
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