Learn More
The US Network for Earthquake Engineering Simulation (NEES) operates a shared network of civil engineering experimental facilities aimed at facilitating research on mitigating earthquake damage and loss of life. The NEEShub gateway was created in response to the NEES community's needs, combining data, simulation, and analysis functionality with(More)
In this application paper, we describe the efforts of a multidisciplinary team toward producing a visualization of the September 11 attack on the North Tower of New York's World Trade Center. The visualization was designed to meet two requirements. First, the visualization had to depict the impact with high fidelity by closely following the laws of physics.(More)
Wireless sensor networks (WSNs) have emerged as a novel solution to many of the challenges of structural health monitoring (SHM) in civil engineering structures. While research projects using WSNs are ongoing worldwide, implementations of WSNs on full-scale structures are limited. In this study, a WSN is deployed on a full-scale 17.3m-long, 11-bay highway(More)
In this paper two modal identification approaches appropriate for use in a distributed computing environment are applied to a full-scale, complex structure. The natural excitation technique (NExT) is used in conjunction with a condensed eigensystem realization algorithm (ERA), and the frequency domain decomposition with peak-picking (FDD-PP) are both(More)
Figure 1. Simulation integrated into lower Figure 2. Impact visualization from outside the building. Right image highlights core Manhattan scene using Google Earth. column damage by rendering all other elements with transparent materials. Figure 3. Region between fapade and building core, during (lefi) and after (right) impact. Figure 4. Visualization of(More)
SUMMARY The Secant Method is an iterative method in which the peak displacement response of a structure or structural component is determined from linear dynamic analyses of a model whose stiffness is updated to reflect a computed degree of degradation that is consistent with the computed peak displacement. Numerous descriptions of the Secant Method and(More)
  • 1