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The elastodynamic Peach-Koehler force is computed for a fully-regularizedstraight dislocation with isotropic core in continuum isotropic elasticelasticity, in compact forms involving partial mass or impulsion functionsrelative to shear and compressional waves. The force accounts for both dynamicradiation damping and inertia. The expressions are valid indifferently forsubsonic or supersonic velocities. Results are compared with the case of aflat-core dislocation of the Peierls-Eshelby type, for a motion of jump fromrest to constant velocity. In the steady-state limit, the Lagrangian functionrelevant to expressing the force in the flat-core case must be replaced by arelated but different function for the regularized dislocation. However, bysuitably defining the regularizing dislocation width, the steady-state limitsof the force for the fully-regularized and flat-core dislocations can bematched exactly.

Dynamic Peach-Koehler self-force, inertia, and radiation damping of a regularized dislocation