ME 4733 Deformation and Fracture of Engineering Materials Instructor: Dr. Honglai Tan [email protected]...

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ME 4733 Deformation and Fracture of Engineering Materials Instructor: Dr. Honglai Tan [email protected] ttp://me. lsu . edu /~tan/teaching/ defrac . h

Transcript of ME 4733 Deformation and Fracture of Engineering Materials Instructor: Dr. Honglai Tan [email protected]...

Page 2: ME 4733 Deformation and Fracture of Engineering Materials Instructor: Dr. Honglai Tan tan@me.lsu.edu tan/teaching/defrac.htm.

Explosive cracking — simulationH. Tan, CSAFE annual report, 2001

Center for the Simulation of Accidental Fires and Explosions

Page 3: ME 4733 Deformation and Fracture of Engineering Materials Instructor: Dr. Honglai Tan tan@me.lsu.edu tan/teaching/defrac.htm.

Explosive cracking — experiment

P.M. Dickson et al., Los Alamos National Laboratories

Ignition of PBX 9501 after first heated to 200°C inaround one hour and then ignited by hot wire at the center.

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Brown University

Nano & micromechanics Laboratory

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Course Outline

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Stress-strain curve

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Necking

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Fatigue Fracture

Cyclic stress

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Case study: how the World Trade Center fell

The design of the WTC saved thousands of lives by standing for well over an hour after the planes crashed into its twin towers.

High temperature for buckling and collapsing.

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Multiscale thinking

D. RaabeComputational Materials Science1998

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After class reading

Hertsburg

Course webpage