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Dynamic factor in impact, phase transition and fracture. (English) Zbl 0988.74050
From the summary: We discuss the related questions ‘how to avoid oscillations under an impact’ and ‘why a crack or phase-transition wave can/cannot propagate slowly’. The underlying phenomenon is the dynamic overshoot which can show itself in deformation of a body under a load suddenly applied. The manifestation of this phenomenon in a unit cell of the material structure is shown to trigger a fast crack in fracture as well as a fast wave in phase transition. Finally, we discuss two ways for the elimination of the overshoot, to obtain a static-amplitude response.

MSC:
74M20 Impact in solid mechanics
74R15 High-velocity fracture
74N20 Dynamics of phase boundaries in solids
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