GT MAP Seminar: Dr. Tomas Zegard and Ms. Xiaojia Zhang (GT CE)

This is a part of GT MAP activities. There will be light refreshments through out the event. There is a room change this semester, seminars will be held at Skiles 257 and refreshments at Skiles 256.

 

See PHOTOS from the event.

 

A couple of members of Prof. Paulino, Glaucio's group will present their research on the topic of "Topology Optimization of Structures and Materials".

3:00 PM - 3:45PM  Dr. Tomas Zegard will give a talk.

3:45PM -- 4:00PM Break with Discussions

4:00PM - 4:25PM Ms. Xiaojia (Shelly) Zhang will give a talk. 

4:25PM - 5PM Discussion of open problems stemming from the presentations.

 

Talk Title:

    "Topology Optimization of Structures and Materials"

 

Abstract:Topology optimization, an agnostic design method, proposes new and innovative solutions to structural problems. The previously established methodology of sizing a defined geometry and connectivity is not sufficient; in these lie the potential for big improvements. However, topology optimization is not without its problems, some of which can be controlled or mitigated.

The seminar will introduce two topology optimization techniques: one targeted at continuum, and one targeted at discrete (lattice-like) solutions. Both will be presented using state-of-the-art formulations and implementations. The stress singularity problem (vanishing constraints), the ill-posedness of the problem, the large number of variables involved, and others, continue to challenge researchers and practitioners. The presented concepts find potential applications in super-tall building designs, aircrafts, and the human body.

The issue of multiple load cases in a structure, a deterministic problem, will be addressed using probabilistic methodologies. The proposed solution is built around a suitable damping scheme based on simulated annealing. A randomized approach with stochastic sampling is proposed, which requires a fraction of the computational cost compared to the standard methodologies.

 

Bio: Tomas Zegard is a postdoctoral fellow in the School of Civil and Environmental Engineering at Georgia Tech. He received a PhD in Structural Engineering from the University of Illinois at Urbana-Champaign in 2014. Afterwards, he took a position at SOM LLP in Chicago, an Architecture + Engineering firm specializing in skyscrapers. He has made significant contributions to the field of topology optimization through research papers and free open-source tools.

Xiaojia Zhang is a doctoral candidate in the School of Civil and Environmental Engineering at Georgia Tech. She received her bachelor’s and master’s degrees in structural engineering from the University of Illinois at Urbana-Champaign. Her major research interests are structural topology optimization with material and geometric nonlinearity, stochastic programming, and additive manufacturing.

Event Details

Date/Time:

  • Friday, September 30, 2016
    3:00 pm - 5:00 pm
Location: Room 257, Skiles Building

For More Information Contact

Sung Ha Kang

kang@math.gatech.edu

404-385-7678