Friday, March 10, 2006

Towards A Regularized Dislocation Dynamics

Professor Wei Cai of Stanford University and his colleagues have recently developed a non-singular continuum theory of dislocation, which could lead to a regulized dislocation dynamics.
One of the major problems of the current dislocation dynamics is its ill conditioning and convergence problem, which is rooted in the continuum dislocation theory itself, because of its singular core. Dr. Wei Cai and his co-workers cleverly uitlize the idea of the Peierls-Nabarro model and extended it to three-dimensional space to formulate a non-singular continuum theory of dislocation, which may lead to a regularized dislocation dynamics.
Their paper is published in a recent issue of Journal of Mechanics and Physics of Solids (Vol. 54, 561-587).

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