Episode 71 - Dampers, How to Shake it up and Slow it Down
Dec 13, 2022
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Trevor Haskett from motioneering discusses different types of dampers in structural engineering, including the use of fluid dampers and Tuned Mass Dampers (TMDs). The podcast explores the practical terms of dampers, weight and volume requirements, retrofit projects, and the potential architectural aspects of dampers. They also discuss the financial aspects of observatories, the effects of typhoons on TMDs, and using TMDs to address shaky floors.
Damping systems improve occupant comfort and mitigate potential issues caused by excessive motions in structures.
Dampers play a crucial role in dissipating energy and reducing vibrations through mass oscillation, liquid sloshing, and turbulence generation.
Damping systems are applicable to various structures, including bridges and floors, to address comfort-related issues and reduce vibrations.
Deep dives
Overview of Motionary and Damping Systems
Motionary, a sister company of RWDI, specializes in damping systems for large structures such as bridges and buildings. Their expertise lies in using damping systems to improve the design of these structures. They work with various types of dampers, including solid heavy steel tune mass dampers, liquid-based dampers, and more. Motionary emphasizes the importance of incorporating damping systems in the design process, as it not only improves comfort and occupant experience but also addresses vibration, noise, and fatigue issues.
The Function and Importance of Dampers
Dampers, whether they are solid mass or liquid-based, play a crucial role in dissipating energy and reducing vibrations in structures. By incorporating damping systems, the dynamic behavior of a structure can be controlled, improving occupant comfort and mitigating potential issues caused by excessive motions. Damper systems absorb and dissipate energy through various mechanisms, such as mass oscillation, liquid sloshing, and turbulence generation, ultimately reducing accelerations, displacements, and vibrations in the building or bridge.
Damping Systems for Different Structures
Damping systems are applicable to various types of structures, not just high-rise buildings. Bridges can benefit from damping systems, particularly for rhythmic excitation or comfort-related issues. Architectural features, such as lightweight structures or artistic elements, can pose vibration challenges that dampers can help mitigate. Even floors in buildings, like those in gyms or long narrow bridges, can be improved by incorporating damping to address rhythmic excitation and reduce vibrations.
Considerations for Implementing Dampers
When considering the implementation of damping systems, it is crucial to assess the specific demands of the structure. Factors such as space availability, required performance improvements, and budget constraints need to be taken into account. Consulting with experts in damping systems can provide valuable insights and tailored solutions. It is also important to understand maintenance requirements, ensure the proper functioning of the dampers over time, and account for their impact on the overall safety and structural integrity of the building or bridge.
Additional Resources for Further Exploration
While there are no specific general resources for learning about damping systems, consulting with experts and engaging in technical discussions can provide valuable insights. Considering case studies, research papers, and relevant industry guidance on topics such as structural dynamics, vibrations, and damping can deepen one's understanding of the subject. Additionally, staying updated with advancements in the field of structural engineering can help engineers explore new possibilities in damping system design.
This episode we're talking with Trevor Haskett of motioneering, motioneering is one of the worlds premier firms managing damping systems. If you've ever seen the picture of the large golden ball pendulum type structure in Taipei 101, motioneering would be the team behind it. Enjoy our conversation while we learn a little more about the practical terms of a damper, weight and volume requirements, and the many systems available to the designer.