Viscoelastic Damper (VED)
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Viscoelastic Damper (VED)
Product Introduction
The Viscoelastic Damper (VED) is a device that dissipates vibrational energy by utilizing the viscoelastic properties of materials (such as polymers, specially formulated silicone oil media, etc.). Its core operating principle involves attenuating vibrations through the material's hysteresis (energy loss) under alternating stress. It combines the dual functions of elastic restoration and damping energy dissipation, and is widely used in areas like bridge vibration control and building seismic resistance.
To better accommodate various vibration mitigation requirements, we have specifically designed a pre-load function into the viscoelastic damper. Its constitutive relation is generally as follows:
F = F₀ + Kx + C·Vα
F₀: Pre-load force
Kx: Elastic force of the spring
C·Vα: Damping force
Depending on the actual engineering requirements, either the pre-load function or the elastic function can be selected. The pre-load force F₀ causes the product to behave like a rigid link under normal service conditions (e.g., braking force, wind load, minor earthquakes), preventing relative movement. The elastic force Kx helps the bridge return to its initial position after an earthquake.
Advantages and Features
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High-Efficiency Energy Absorption and DissipationIn its pre-loaded state, it can efficiently absorb and dissipate energy during structural vibrations.
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Enhanced Stability and Safety
The pre-load enhances the damping effect, contributing to improved structural stability and safety.
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Facilitates Post-Earthquake Rehabilitation
The spring provides a certain restoring stiffness to the bridge, aiding its return to the initial position after an earthquake and facilitating post-earthquake repairs.
