Multi-Scale Simulation of Low-Triaxiality Fracture and Ultra Low Cycle Fatigue in Steel Structures (NEES-2012-1121)

<p><strong>Title:</strong> Multi-Scale Simulation of Low-Triaxiality Fracture and Ultra Low Cycle Fatigue in Steel Structures (NEES-2012-1121)</p> <p><b>Year Of Curation: </b>2013</p> <p><b>Description: </b>Current standards require that welded column splice connections in Special or Intermediate Resisting Frames (IMRFs or SMRFs) feature Complete Joint Penetration (CJP) groove welds to minimize stress concentrations due to the flaw produced by Partial Joint Penetration (PJP) welds. In contrast to PJP welds, CJP welds are often costly, requiring additional material, inspection and back-gouging to ensure complete penetration. However, unlike Welded Beam Column connections which fractured in the 1994 Northridge Earthquake, column splices have modest deformation demands, implying that perhaps with the use of modern, toughness-rated weld filler materials, PJP welded splices may offer acceptable performance. Motivated by these observa-tions a study featuring five full-scale tests on PJP-welded column splices is presented to examine their feasibility for use in IMRFs or SMRFs in seismic environments.</p> <p><b>Award: </b>http://www.nsf.gov/awardsearch/showAward?AWD_ID=0825155</p> <p><b>PIs & CoPIs: </b>Amit Kanvinde</p> <p><b>Dates: </b>October 01, 2011 - September 01, 2013</p> <p><b>Organizations: </b>University of California, Davis, CA, United States</p> <p><b>Facilities: </b>University of California, Berkeley, CA, United States</p> <p><b>Sponsor: </b>AISC</p> <p><b>Keywords: </b>Splice, Column, PJP, CJP, Weld, Moment Frame, Partial Joint Penetration, Complete Joint Penetration</p> <p><b>Publications:</b> "Specimen 14C", "Specimen 24A", "Specimen 14A"</p> <nb:citations></nb:citations>