Tracy C. Becker
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View article: Dynamic In-Situ Testing of a 15-Year-Old Friction-Pendulum Base Isolation System
Dynamic In-Situ Testing of a 15-Year-Old Friction-Pendulum Base Isolation System Open
Base isolation systems represent one of the most effective strategies for the seismic protection of buildings and infrastructure, applicable to both new constructions and retrofitting projects. Base isolation has received significant atten…
View article: Science Overview of the Europa Clipper Mission
Science Overview of the Europa Clipper Mission Open
The goal of NASA’s Europa Clipper mission is to assess the habitability of Jupiter’s moon Europa. After entering Jupiter orbit in 2030, the flight system will collect science data while flying past Europa 49 times at typical closest approa…
View article: Selective online model updating in hybrid simulation of a full‐scale steel moment frame
Selective online model updating in hybrid simulation of a full‐scale steel moment frame Open
This study presents the implementation of an online model updating algorithm within a full‐scale hybrid simulation (HS) of a six story, four bay steel moment frame. The experimental substructure consists of a cruciform subassembly generati…
View article: Inverse design of isolated structures using predicted FEMA P-58 decision variables
Inverse design of isolated structures using predicted FEMA P-58 decision variables Open
Base isolation systems are often chosen in structural engineering to outperform conventional designs, allowing designers to achieve high performance goals. However, achieving specific performance targets requires numerous high-fidelity ana…
View article: Extreme behavior in a triple friction pendulum isolated frame
Extreme behavior in a triple friction pendulum isolated frame Open
Summary While isolation can provide significantly enhanced performance compared to fixed‐base counter parts in design level or even maximum considered level earthquakes, there is still uncertainty over the performance of isolation systems …
View article: STR-875: PREDICTING FAILURE IN SLIDING ISOLATION BEARINGS UNDER LONG-PERIOD MOTIONS
STR-875: PREDICTING FAILURE IN SLIDING ISOLATION BEARINGS UNDER LONG-PERIOD MOTIONS Open
For the majority of structural systems, there has been a push to understand collapse behaviour and to quantify collapse margin ratios. However, for seismic isolation there is still significant work to be done in this area, especially for s…
View article: NDM-518: EFFECTS OF NON-TRADITIONAL ISOLATOR PLACEMENT FOR SEISMIC RETROFIT
NDM-518: EFFECTS OF NON-TRADITIONAL ISOLATOR PLACEMENT FOR SEISMIC RETROFIT Open
Seismic isolation delivers improved performance by means of a flexible layer at which lateral deformation is concentrated. However, for seismic retrofit applications base isolation systems can be of considerable expense, in significant par…
View article: Minimal‐disturbance seismic rehabilitation of steel moment‐resisting frames using light‐weight steel elements
Minimal‐disturbance seismic rehabilitation of steel moment‐resisting frames using light‐weight steel elements Open
Summary This paper presents a rehabilitation technique developed under a design and construction scheme, termed minimal‐disturbance seismic rehabilitation . This scheme pursues enhancing the seismic performance of buildings with the intent…