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The mechanical damage accumulation occurring in an array of axially loaded nanopillars is studied within the stochastic approa ch. To each nanopillar, an initial strength- -threshold is assigned which is drawn from the Weib ull probability distribution. Under the influence of load exceeding the strength-thresh old the pillar height is reduced. Then the reduced pillar gets new higher strength-thresho ld and its load is transferred to other working pillars. We analyse slip loads causing the system height reductions and avalanches of the pillar height reductions.

Mechanical annealing model of damage in arrays of nanopillars