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The indentation of a flat punch into a rigid-plastic half-space

✍ Scribed by R.I. Nepershin

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
579 KB
Volume
66
Category
Article
ISSN
0021-8928

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✦ Synopsis

The indentation of a flat punch into a rigid-plastic half-space is modelled by a centred field of slip lines with rotation of the rectilinear free boundary about the comer point of the punch. Adjacent to the rectilinear boundary, there is a rigid, stress-free region which is calculated using a velocity hodograph and determines the curvature of the initial horizontal boundary of the half-space during indentation up to the steady-state stage of the motion of the punch in the unbounded rigid-plastic medium.

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Calculations are presented of the indentation of a spherical punch into an ideally plastic half-space under condition of complete plasticity and taking account of contact friction, which is modelled according to Prandtl and Coulomb. Friction leads to the formation of a rigid zone at the centre of th