R&D Center
This is the NSV R&D center, which leads technical
development in the noise, vibration, and shock fields.
Building Noise & Vibration Evaluation
Structural Noise & Vibration Evaluation
Structural Noise & Vibration Evaluation
Structural Noise & Vibration Evaluation

Evaluation of usability of areas where damage is expected when noise/vibration-generating equipment is in operation such as construction facilities (vibration/low vibration, dynamic stiffness, air conditioning noise, transmission noise, Structural Noise, etc.)

Necessity
01
Prevention of Civil Complaints
Prevention of civil complaints from households when facilities related to building operation are in operation
Verification of vibration influence in areas where precision equipment is installed
Proactive measures against economic damage caused by tarnishment of corporate image and damage compensation that can occur when there are civil complaints
02
Pre-evaluation of influence
Cause analysis through data examination and field investigation
Evaluation of influence of vibration on precision equipment through structure when new business sites (precision equipment facilities) are designed
Prediction of influence of vibration and air-conditioning noise between upstairs and downstairs in air conditioning room/machine room
03
Optimal Measures
Design of optimal measures for noise/vibration source through simulation
Prevention of increase in construction costs caused by over-design Double investment due to insufficient investment through forecast and overinvestment due to overdesign
PROCESS
Noise/vibration source (rotator facility, loudspeaker, heavy equipment, walking impact, pipe, etc.)Examining design-related data such as construction drawing/structural drawing
ANSYS / NASTRAN / RAYNOISE
Analysis modeling
Creation of Simulation and Level Contour
Examination of analysis results
Drawing optimal plan
Consultation with client (economic feasibility, facility operability)
Confirmation of measures
Evaluation Case 1
Semiconductor plant (Examination of low vibration)
Semiconductor factory (Micro motion review)
Project Overview

- Construction of semiconductor plant
- Examination of low vibration influence of facilities on section with precision equipment installed when plant is in operation
- Checking against precision equipment tolerance standards and applying vibration isolation measures when standards are exceeded
- Vibration isolation using violation isolation measures-HD-MAT-50T and shock-absorbing desk
- Recommended vibration standards were met after taking vibration isolation measures

3D Modeling
Prediction of Status
Comparison of low vibration analysis results
Vibration Isolation Measures
CASE1 - Vibration isolation measures using damping mat
CASE2 - Vibration control system through installation of Air-Spring Mount
Evaluation Case 2
Office building (examination of noise/vibration)
Office buildings (vibration/Structural Noise review)
Project Overview

- Construction of office building
- Examining noise/vibration influence on residential area from noise/vibration occurring in building internal facilities (air conditioner, pump, cooling top)
- Checking against recommended vibration standards and applying vibration isolation measures when standards are exceeded
- Vibration isolation using vibration measures-vibration isolation spring and Po-MAT-50T
- Vibration/noise recommended standards were met after taking vibration isolation measures

3D Modeling
Prediction of Status
Prediction of Vibrations
Prediction of Noise
Vibration Isolation Measures
Double floor detail of the whole air conditioning room
SIROCCO FAN Vibration isolation detail
MULTI STAGE PUMP DETAIL
Prediction after measures
Prediction of Vibrations
Prediction of Noise
Evaluation Case 3
Hospital Building (Examination of vibrations)
Hospital buildings (Vibration review)
Project Overview

- Construction of hospital building
- Examining influence of vibrations generated by subway and building indoor facilities (air conditioner, pump, cooling tower) on precision equipment section (operation room)
- Comparing with recommended vibration standards and taking vibration isolation measures when standards are exceeded
- Vibration isolation using Vibration Measures-vibration isolation spring and Po-MAT-50T
- Vibration/noise recommended standards were met after taking vibration isolation measures

3D Modeling
Prediction of Status
Prediction of Vibrations
Vibration Isolation Measures
Subway vibration measures: Vibration isolation measures using Po-mat 50t (Vibration isolation mat)
Vibration measures for indoor facility: Installation of a double floor system using HD-MAT-25t (damping mat)
Prediction after measures taken
Prediction of Vibrations