South Bay Dinner: Simulation of Ductile Fracture Initiation in Steel Structures with Applications to Seismic Design

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Nonlinear finite element simulations are increasingly used by structural engineers to characterize the seismic performance of structural components and systems. However, interpreting the results (i.e., limiting values of stress and strain demands) of finite element simulations is not straightforward, especially when they are used to assess fracture safety. This is particularly challenging for seismic design where structural components are designed to undergo large-scale yielding and traditional fracture mechanics is less reliable. This lecture will summarize recent research on continuum-based fracture mechanics, where cyclic void growth models are used to assess fracture initiation under large scale cyclic yielding. The models are implemented through finite element analyses and validated through a series of tests on notched axial bars, compact tension specimens, and large scale steel subassembly tests of braces and column base connections. Practical engineering application of the models will be described.


Registration: 5:15 pm - 5:45 pm
Dinner: 5:45 pm - 6:30 pm
Program: 6:30 pm - 7:45 pm



Gregory Deierlein
J.A. Blume Professor of Engineering
Stanford University

Deierlein’s research focuses on improving limit states design of constructed facilities through the development and application of nonlinear structural analysis methods and performance-based design criteria. Recent projects include the development and application of strength and stiffness degrading models to simulate steel and reinforced concrete structures, seismic design and behavior of composite steel-concrete buildings, analysis of inelastic torsional-flexural instability of steel members, and a fracture mechanics investigation of seismically designed welded steel connections.


February 27th, 2018 5:15 PM   through   9:00 PM
Michael's At Shoreline
2960 N Shoreline Blvd
Mountain View, CA 94043
United States
Phone: 415-974-5147
Member $ 33.00
Non-Member $ 38.00
Junior Member $ 25.00
Student $ 20.00