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Controlled Micro-Impact with a Brittle Rupture Phase: A Study Using the Hertz Contact Model

Authors: Magomedov M.Kh., Yakovlev A.V. Published: 13.02.2014
Published in issue: #1(94)/2014  
DOI:

 
Category: Design and technology  
Keywords: controlled micro-impact, contact-impact force, initial kinetic energy, critical compressive stress, brittle rupture phase, lost speed and potential energy of local damage, forming of a halftone socket, impact etching technology

Within the Hertz theory of impact, a problem of a shape formation of multiplicity of relief halftone elements on the surface of H blank through the initial multi-pixel image is stated and solved. This statement of the problem is reduced to the control of the beginning of avalanche-like transition of the elastic stressed state of the passive-body material to the brittle-rupture phase under exposure to impact pulse. As a result of each micro-impact, a halftone image element appears in the appropriate local zone of the H blank. A practical importance of solving this problem is the use of derived analytical relationships at the stages of development and operation of computer-aided impact-etching machines.

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