Hello everybody
Despite a few TMD cost models available in the literature, I am searching for more accurate initial and lifetime cost models of translational TMDs for Life Cycle Cost Analysis (LCCA) of TMD-equipped structures.
In fact, the provided cost model affiliated with one of the companies designs and manufactures transitional TMD (such as LeMessurier CO.), which this model consists TMD initial cost (construction and installation of the TMD) and TMD damage cost (maintenance and repair losses of TMD before structural collapse)
The most basic type of TMD has no ongoing cost beyond the initial purchase price. And, there is no on-going maintenance cost apart from basic corrosion control. There are larger systems like those installed in very tall slender buildings that come with complicated hydraulic actuation. These systems are often tested annually and the hydraulic components have a limited service life. So, it comes down to what type of TMD installation are you considering?
dear Eric Ancich
I am talking about passive tuned mass damper with any technology, that's why I mentioned that translational TMD which belons to a specific company sush as LeMessurier with its own manufacturing technology. alternatively I am searching a suitable cost model consisting initial cost (for construction and installation) which its cost model usually are based on only TMD mass in the literature, and also I intend to find damage cost of TMD (with assuption, loss if TMD before strucrtural collapse), which the latter usually is not considered in LCCA.
About maintenance cost you said that there is no on-going maintenance cost apart from basic corrosion control: It should be said that finally, there are costs involved in maintaining and inspecting TMD components, such as its viscous damper, as well as servicing components. For example, the bidirectional TMD installed on Huis Ten Bosch.
It is not always necessary to purchase a TMD from a commercial supplier. Where this happens, the likely maintenance cost is normally available from that supplier. My own experience is with bespoke TMD's designed after dynamic measurements. Damping was usually available from automotive shock absorbers to reduce the initial cost and on-going maintenance. Does this help?
The effectiveness of tuned mass dampers (TMDs) in reducing the seismic response of civil structures is still a debated issue. The few studies regarding TMDs on inelastic structures indicate that they would perform well under moderate earthquake loading, when the structure remains linear or weakly nonlinear, while tending to fail under severe ground shaking, when the structure experiences strong nonlinearities. TMD seismic efficiency should be therefore rationally assessed by considering to which extent moderate and severe earthquakes respectively contribute to the expected cost of damages and losses over the lifespan of the structure.
- Badges
- Science topic
- Similar topics
- Engineering
- Control Theory
- Control Systems
- Control Systems Engineering