Dislocation Dynamics and Plasticity - California Institute of Technology

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$An eigenerosion approach to brittle fracture - Solid Mechanics Home ...$

Outline of Lecture #4 • Dislocation motion is governed by kinetics • Dislocations react with each other irreversibly • Energy-minimization is not enough to describe dislocation dynamics, hardening • Need kinetics, time-dependent problems! (Humphreys and Hirsch, 1970) Michael Ortiz ROME0611
The forest-hardening problem Glissile dislocation moving through forest dislocations Micro-to-macro transition, single slip Michael Ortiz ROME0611
Page 1 and 2: Multiscale models of metal plastici
Page 3 and 4: Crystal plasticity - Macroscopic be
Page 5 and 6: Etch pits on a LiF crystal Dislocat
Page 7: Thermal softening T. Suzuki, S. Tak
Page 11 and 12: Classical rate variational problems
Page 13 and 14: Forest hardening - Stored energy mo
Page 15 and 16: Forest hardening − Dissipation at
Page 17 and 18: Forest hardening - Summary random o
Page 19 and 20: Rate-independent problems Michael O
Page 21 and 22: Forest hardening - Pinning/depinnin
Page 23 and 24: Forest hardening - Pinning/depinnin
Page 25 and 26: Forest hardening − Single disloca
Page 27 and 28: Forest hardening − Summary & outl
Page 29 and 30: 2½D phase-field model - Energy Cor
Page 31 and 32: Phase-field dislocation dynamics St
Page 33 and 34: 1 τ/τ0 0.5 0 -0.5 -1 Line-tension
Page 35: time ms µs Metal plasticity − Mu

Dislocation Dynamics and Plasticity - California Institute of Technology

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