<div dir="ltr"><span style="font-size:12.8px">Dear colleagues, please share this announcement of an upcoming webinar on Tuesday, 10/10, noon-1pm (PDT). The Early Career Researcher Forum is a webinar series that highlights compelling research and facilitates the exchange of ideas among graduate students, postdocs and early career faculty, but all are welcome to participate.</span><br><div><span style="font-size:12.8px"><br></span></div><div><span style="font-size:12.8px">+++</span></div>NHERI SimCenter – Early Career Researcher Forum<br>Tuesday, October 10, 2017, noon – 1pm (PDT)<div><span style="font-size:12.8px"><br></span></div><div>
<p class="MsoNormal"><b>Numerical
Simulation of Concentrically Braced Frames using OpenSees<br>
SimCenter Series: Early Career Researcher Forum<span></span></b></p><p class="MsoNormal"><b><br></b></p><b>Presenter: </b>Andrew Sen is a doctoral candidate in the Department of Civil and Environmental Engineering at the University of Washington. His research seeks to evaluate the seismic performance of pre-capacity-design concentrically braced frames and provide practical guidance for their seismic retrofit.
<h2><p class="MsoNormal" style="font-size:12.8px;font-weight:normal"><b>REGISTER</b> for this webinar at</p><font color="#1155cc" face="calibri"><span style="font-size:12.8px;font-weight:normal"><u><a href="https://www.designsafe-ci.org/learning-center/training/simcenter/webinar-171010/">https://www.designsafe-ci.org/learning-center/training/simcenter/webinar-171010/</a></u></span></font><br><p class="MsoNormal" style="font-size:12.8px;font-weight:normal">Connection information will be distributed upon receipt of registration.</p></h2>
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<p class="MsoNormal" style="text-align:justify"><b>Abstract: </b>Concentrically braced frames (CBFs) constitute a substantial
proportion of existing steel building inventory in regions with high seismic
risk in the US. Many of these CBFs were built prior to the codification of
capacity-based and ductile design provisions, and CBFs built prior to about
1990 have been recognized as seismically vulnerable structures by the
engineering community. While modeling approaches for special CBFs using <i>OpenSees</i> have been well established,
these are not necessarily appropriate for existing and retrofitted CBFs, since
recent experimental research has identified several distinct yielding and
failure sequences for these systems. Nonlinear response-history analysis is
required to understand the impacts of these complex behaviors on seismic
performance, but adequate simulation necessitates new modeling approaches. This
presentation discusses state-of-the-art CBF modeling approaches in <i>OpenSees</i>, and how this framework has
been adapted at both the conceptual and software levels to meet emerging research
needs. Workflows ranging from subassemblage test simulation to three- and
nine-story building response-history analyses are presented, including how <i>MATLAB</i>, <i>OpenSees</i>, and high-performance computing resources (including TACC)
are leveraged to facilitate research.</p><p class="MsoNormal"><span></span></p>
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<p class="MsoNormal" style="text-align:justify">+++</p><p class="MsoNormal" style="text-align:justify"><br></p><p class="MsoNormal" style="text-align:justify">Thank you,</p><p class="MsoNormal" style="text-align:justify"><br></p><p class="MsoNormal" style="text-align:justify">NHERI SimCenter</p>
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