This device reduces the vertical vibration of floors and stairs caused by walking, equipment vibration, traffic vibration, etc. The system absorbs and suppresses vertical vibrations by tuning a vibration mass (weight) to the vertical shaking of floors, stairs, etc. TMDs for horizontal vibration can also be manufactured for wind vibration countermeasures. For more information on TMDs for horizontal vibration, please contact us,this way (direction close to the speaker or towards the speaker)Please contact us from
cantilever type
Spring-supported
Product name
TMD for vertical vibration
model number
TMDV series (cantilever type) TMDV-100sc (vibrating mass 100 kg type) TMDV-300sc (vibrating mass 300 kg type) TMDV-500sc (vibrating mass 500 kg type) TMDV-800sc (vibrating mass 800 kg type) TMDV-1000sc (vibrating mass 1000 kg type) TMDV-1500sc (vibrating mass 1500 kg type) TMDV-2000sc (Vibrating Mass 2000 kg type)
TMDV series (spring-supported) TMDV-1000cb (vibrating mass 1000 kg type) TMDV-1500cb (vibrating mass 1500 kg type) TMDV-2000cb (Vibrating Mass 2000 kg type)
*We can also accommodate vibrating mass masses not listed in the model number. For more information, please contact us.
structure
elements
Cantilever type
It consists of a frame, shaft, arm, vibration mass, coil spring, damping device, and stopper. It is a cantilevered structure. An arm with a pivot point on an axis is attached to a frame fixed to the structure, and a vibration mass is attached to the arm. A coil spring and damping device are attached to the end of that arm. As a result, the arm and vibrating mass vibrate in the vertical direction around the axis, and the damping effect is more efficient than the spring-supported type. Vibration frequency adjustment is performed by moving the vibration mass.
Spring-supported
It consists of a frame, a vibrating mass, a coil spring, a damping device, and a stopper. A coil spring is installed on a frame fixed to the structure, on top of which is placed a vibrating mass. Frequency adjustment is made by increasing or decreasing the type and number of auxiliary springs.
principle
By synchronizing the frequency of the TMD with the vibration control object, the vibrating mass of the TMD is shaken by the vibration of the vibration control object. This swaying of the vibration control object is absorbed by the TMD and reduces the swaying of the vibration control object.
Case Studies
Example of Walking Vibration Countermeasures I
Walking Vibration Countermeasures Case Ⅱ
Walking Vibration Countermeasures Case III
Walking Vibration Countermeasures Case IV
Examples of Earthquake Vibration Countermeasures
Examples of Machine Vibration Countermeasures
Example of floor sway vibration countermeasure
Related Pages
AMD vs TMD In-depth Comparison
This report compares AMD (Active-Mass-Damper) and TMD (Tuned-Mass-Damper), which are commonly used for vibration control of building floors, in terms of features, cost, and maintainability.
Introduction of related useful contents
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Introduction of TMD Series This page explains the "features, principles, structure, installation examples, effects, etc." of Yacmo's TMDs, which can handle a wide range of vibration from small vibrations caused by walking to large shaking caused by wind and earthquakes. Read this to deepen your understanding of TMDs. ⇒Let's look at some of the materials
Introduction of Horizontal TMD Features and installation examples of horizontal TMDs that reduce lateral sway from earthquakes, strong winds, and traffic vibrations are introduced. ⇒Let's look at some of the materials
Resolving TMD Questions! Frequently Asked Questions Q&A Frequently asked questions about TMD are summarized in a Q&A format. Please use it as a reference for product selection and countermeasures. ⇒Let's look at some of the materials
Points and weaknesses of TMD that you need to know in order to achieve optimal results. TMD is often used as an effective floor sway countermeasure, but it does not work for all types of sway. This section explains the principles of TMD and provides an easy-to-understand explanation. ⇒Let's look at some of the materials
Vibration Problems in Steel Construction Reasons and Countermeasure Points This section explains the reasons for the swaying of steel-framed structures and summarizes the key points to keep in mind during the design phase to determine how to reduce vibration and ensure livability. ⇒Let's look at some of the materials
Wind sway countermeasures for mid- and high-rise buildings increase occupant performance! Wind sway can be a problem not only in skyscrapers but also in long, narrow mid-rise buildings that are built on narrow lots in urban areas. This section introduces the causes of wind sway in mid-rise buildings and examples of horizontal TMD installations that are effective as wind sway countermeasures. ⇒Let's look at some of the materials
Vertical Nori Vibration Control in Buildings In recent years, there has been an increase in the number of complexes and tenant buildings that house facilities for various purposes. In particular, the vertical groove vibration of dances and live performances in sports facilities, studios, halls, etc. is often a problem because the vibration is so large that it travels through the building and adversely affects other stores and other facilities. What is vertical groove vibration? What countermeasures are available? This section summarizes actual examples of improvements. ⇒Let's look at some of the materials
Walking vibration countermeasure for long-span floors Spacious, open offices with long spans and no pillars are popular, but such long-span structures can cause the floor to sway easily when walking, which can lead to a poor working environment. In this document, we will explain why walking vibration occurs and how to prevent it. How can walking vibration be prevented? What kinds of floors have caused problems? Actual examples of long-span floor vibration countermeasures are explained and introduced in a comprehensive manner. ⇒Let's look at some of the materials
Database of TMD mass mass performance for vertical vibration The following is a list of 808 TMD mass masses for vertical vibration that Yacmo has installed to date, sorted by structure and application, for your reference when considering TMD sizes and mass masses. ⇒Let's look at some of the materials
Past Webinars on Demand
Lineup of Vibration Damping Devices for Vertical Vibration (TMD) Examples We will introduce the structure and features of each lineup of Yakumo's Vibration Damping Devices (TMD) for Vertical and Vertical applications and their case studies.
Countermeasure points and improvement examples for machine vibration problems generated from production equipment, etc. We will explain countermeasure points on the theme of machine vibration countermeasures for production equipment and other machinery, along with examples of improvements.
Concept of walking vibration countermeasures The lecture will explain the basics of knowing walking vibration, design concepts to avoid complaints, and how to deal with complaints in case they do occur, using actual examples.
