Modeling Dislocations and Disclinations with Finite Micropolar Elastoplasticity
Abstract
Presented are aspects of a constitutive model for crystalline metals containing dislocation and disclination defects. Kinematics and balance laws are developed simultaneously at two scales of observation. The macroscopic kinematic description is characterized by a multiplicative decomposition of the deformation gradient, while the meso-level description follows from an additive decomposition of a connection into objects reflecting dislocations and disclinations. At the macroscale, the standard linear and angular momentum balances are enforced, while at the mesoscale, we postulate additional momentum equations for driving forces conjugate to defect densities.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2001
- Accession Number
- ADA417830
Entities
People
- D. J. Bammann
- D. L. Mcdowell
- J. D. Clayton
Organizations
- Georgia Tech