Multitech

MULTITECH Vibration Control
Multitech is a specialist of slender structures design and of various solution of damper (TMD of different types) and of Liquid damper. Our target is to support on long term basis our partners and consequently we offer free evaluation of your practical problem.
• Liquid damper
• Tuned Mass Damper (cable coil, dashpot, viscous)
• Laboratory testing
• Stack design

VIBRATION STUDIES
In order to be more competitive Engineers design more and more lighter and slender structures to save weight and transport costs.
Structure becomes more economical but are also more sensitive to wind induced vibration (vortex shedding), mechanical induced vibration (fans); waves, earthquake…. Solution is given by the use of appropriate damper type or in some occasion in design modification. Multitech will be your partner to design the best economical structure-damper solution.
TUNED MASS DAMPER
Multitech is designer of many types of Tuned Mass Damper. There is no universal damper. Some are excellent if ambient conditions are very aggressive; some when modal mass are huge; some others when vibration cycles is low, some when vibration amplitude is small or huge etc.
Each structure a is different and Multitech is able to give the most appropriate solution to any problem.
LIQUID DAMPER
Liquid damper can be used in many cases. They are not universal depending of frequency and level of vibration excitation but they cover a large band of application.
In a lot of cases they can be used as a top platform or as connection device between 2,3 or 4 slender structure and paly a second role and not be just a damper. Consequently, they are generally a global cheap solution.
STACK DESIGN
Multitech is a specialist to design slender structures for more than 25 years and has gained a lot of experience in the design of steel stack of any kind. Our goal is to provide the best economical solution: structure + transport + damper to give our partners the best competitiveness on the international markets.
In the field of steel stacks, we can design all types of stacks such as single flue; double skin, multiflue, refractory lined; steel lined, FRP lined, borosilicate lined, flake/resin lined etc. and able to with hand operation conditions ranging from 50°C to 850°C or more.

TYPES OF DAMPERS
A. LIQUID DAMPER
• Very efficient in most of the cases
• Economical especially if the damper is used as a top platform
• Do not need any maintenance
• No wear
B. CABLE TUNED MASS DAMPER
• Very efficient in most of the cases
• Very little need of maintenance
• No wear in most cases
C. DASHOP TUNED MASS DAMPER
• Efficient and economical in most some cases especially if critical velocity is high and number of vibration cycles is low.
• Need of maintenance especially if high number of vibrating cycles
• Wear and replacement to be considered if high number of vibrating cycles
D. VISCOUS TUNED MASS DAMPER
• Very efficient in most of the cases
• Do not need any maintenance
• No wear