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WID-DOW Seminar: On Fast Computers and Their Use in Mechanical Engineering

Event Details

When: January 27, 2014, 4:00 PM–5:00 PM

Location:

Cost: Free and open to campus.

Contact: 608-316-4401, hstampfli@wisc.edu

WID’s Optimization research area welcomes Dan Negrut for a WID-DOW presentation. Negrut is an Associate Professor of Mechanical Engineering at UW-Madison. He is also the Director of the Wisconsin Applied Computing Center and leads the Simulation-Based Engineering Lab (SBEL).

Negrut will lead a talk titled, “On Fast Computers and Their Use in Mechanical Engineering: From the Dynamics of Granular Material to the Motion of the Mars Rover.”

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This event is free and open to campus. Registration is NOT required.

Speaker Abstract:

This talk sets out to discuss recent trends in the hardware industry that make this an opportune time to attack through modeling and simulation problems that up until recently have been considered intractable. The focus is on mechanical systems comprising many elements that interact through bilateral (joint-type) and unilateral (contact-type) constraints. The equations of motion for these systems are posed as collections of Differential Variational Inequalities (DVIs) whose numerical solution is mapped onto hardware that supports parallel computing on a variety of platforms: GPU cards, multi-core CPUs or clusters. Upon time discretization, the DVIs lead to a mathematical program with millions of equality and inequality constraints whose solution poses stiff convergence and scalability challenges. The talk will briefly highlight each solution stage and its implementation into an open source parallel simulation capability called Chrono. Chrono has been used to characterize the mobility of ground vehicles operating on deformable terrain, the flow of granular material and fluid-solid interaction processes.

More about Dan Negrut:

Dan Negrut

Dan Negrut received his Mechanical Engineering Ph.D. in 1998 from the University of Iowa under the supervision of Professor Emeritus Edward J. Haug. He spent six years working for Mechanical Dynamics, Inc., a software company in Ann Arbor, Michigan. In 2004, he served as an Adjunct Assistant Professor in the Department of Mathematics at the University of Michigan, Ann Arbor. He spent 2005 as a Visiting Scientist at Argonne National Laboratory in the Mathematics and Computer Science Division. At the end of 2005, Negrut joined the Mechanical Engineering faculty at the University of Wisconsin-Madison. His interests are in Computational Science and he leads the Simulation-Based Engineering Lab. In 2009, Negrut received a National Science Foundation Career Award. Since 2010, he has been an NVIDIA CUDA Fellow. He is also the co-founder and current Director of the Wisconsin Applied Computing Center.