Abstract
Results of numerical simulation of a high-density pulse current-induced stress-strain state in a metallic body with such defects as macrocracks or pores are presented. Nonstationary local stress-strain kinetics of the metal in the vicinity of defects under current pulses and mechanical loads was investigated by the finite element method. Local areas of residual stresses influencing the level of maximum stresses under further mechanical loading were shown to be formed in the vicinity of defects as a result of the above thermomechanical effects. Potential “healing” of crystal lattice microdefects under local thermomechanical loading is illustrated by simulation results obtained with the method of molecular dynamics.
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