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Product Introduction
| Name | Elastic damper |
| concept | Basic concepts of elastic dampers An elastic damper is a device used to absorb and consume energy, which is usually installed in a building structure, mechanical system or other vibration system to reduce the impact of vibration and shock. Elastic dampers are able to provide resistance during motion, and this resistance is proportional to the speed of the object, so it is called "damping". |
| type | 1. Viscoelastic damper: This is a viscous damping device with stiffness, and the types of load-deformation hysteresis curves are linear, deformation-softening and deformation-hardening. It is composed of viscoelastic damping material and restraint plate alternately superimposed and bonded. Besides damping material, restraint plate and binder layer are also included. |
| 2. Velocity dependent dampers: usually composed of viscous or viscoelastic materials, which use the characteristics of materials to dissipate seismic energy under earthquake action. The energy dissipation capacity of this kind of damper is related to the velocity. | |
| 3.** Frequency modulation mass damper (TMD)** : composed of mass block, spring and damping system, by adjusting its vibration frequency to the frequency of the main structure, change the resonance characteristics of the structure, in order to achieve damping. | |
| 4.** Frequency modulation liquid damper (TLD)** : It is a passive energy dissipation vibration reduction device, which uses the dynamic side force generated by the liquid in the fixed tank during the shaking process to provide damping. | |
| 5.** Tuned liquid column damping system (TLCD)** : The auxiliary vibration system is used to eliminate the vibration of the main structure, and the auxiliary vibration system is composed of the restoring force generated by the liquid in the barrel container and the damping effect generated by the hole in the container. | |
| 6. Viscous damper: This is a non-rigid, speed-dependent energy dissipation device that uses the viscosity of the liquid to provide damping to dissipate vibration energy. |
| Application scenarios | Application scenarios of elastic dampers Elastic dampers are widely used in building structures, Bridges, automobiles, aircraft, ships and other fields. They can effectively reduce the vibration caused by wind, earthquake, traffic load, etc., and improve the safety and comfort of structures. |
| Latest research progress | According to the latest research progress, a new type of rotary amplification viscoelastic damper is proposed, which can magnify the relatively small angular deformation at the joint of the beam and column by using the lever principle, thereby increasing the hysteretic deformation energy dissipation of the viscoelastic material and improving the vibration control ability of the structure. In addition, the study of high energy-consuming viscoelastic dampers also shows that they have good damping effect under complex earthquake action, and their mechanical properties remain stable under large strain conditions, and no damage occurs. These new research results are elastic dampers |
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