Phononic Crystal Isolator

APPLICATION SCENARIOS

1. Railway track vibration isolation – reduces vibration transmission caused by train operation

2. Urban rail transit – enhances passenger ride comfort

3. High-speed railway lines – minimizes fatigue damage to track structures

4. Vibration control for track bridges and tunnels – safeguards nearby buildings and infrastructure

Product Description

This isolator leverages the **local resonance mechanism of phononic crystals** to precisely control the propagation of elastic waves within rail structures. It achieves **>18dB insertion loss** across the 20–200Hz frequency band, delivering highly effective broadband vibration isolation. Compared to traditional steel-spring floating slab systems, it offers up to **50% improvement in vibration reduction** while completely eliminating spring breakage risks—providing a next-generation solution that combines superior performance with zero safety concerns for rail vibration mitigation projects.

PRODUCT FUNCTION

Broadband wave control:  

Local resonance units expand the elastic wave bandgap range, specifically suppressing the 20-200Hz main vibration frequency band of tracks.  

Metamaterial structure enables vibration isolation efficiency to exceed ＞18dB, with 40% improvement in high-frequency noise reduction performance.  

Intrinsic safety design:  

All-solid-state non-metallic resonators eliminate the risk of fatigue fracture of metal springs, reducing maintenance costs by 90%.  

Modular pre-installed units support quick replacement, reducing downtime by 80%.  

Enhanced environmental adaptability:  

Bandgap stability ＞95% within the temperature range of -20℃~80℃, resisting freeze-thaw/thermal expansion effects.  

Salt spray resistance rating ＞1000h (ISO 9227), suitable for coastal/tunnel humid environments.  

Empowered by intelligent operation and maintenance:  

Wireless monitoring of resonance unit status enables digital twin management of vibration suppression efficiency.

PERFORMANCE INDEX

Core technology: Phononic crystal local resonance structure  

Vibration isolation performance: Insertion loss ＞18dB (EN 15461 test standard)  

Effective frequency bandwidth: 20-200Hz elastic wave bandgap control  

Mechanical lifespan: ＞30 years (100 million cycles of dynamic load)  

Temperature range: -20℃~80℃ (bandgap frequency deviation ≤3%)  

Load capacity: ≥300kN/m² vertical bearing capacity

APPLICATION AREA

Urban metro: Vibration-sensitive areas of tunnel section tracks (under hospitals, laboratories)  

High-speed railway: Resonance risk prevention and control in bridge sections  

Precision manufacturing: Ultra-quiet environment protection for chip factories/optical laboratories adjacent to tracks  

Medical centers: Protection of equipment such as MRI against micro-vibration interference  

Renovation projects: Safety upgrade and replacement of existing steel spring floating slab systems