Drilling and coring mechanics slip line fields in plasticity soil and granular mechanics
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Drilling and coring mechanics: Slip line fields in plasticity, soil and granular mechanics. Y S Ouyang BIME/NTU Class notes. Frictional surface indentation mode: τ max = 45°-ψ/2 at free surface (ψ: friction angle) . Mohr-Coulomb failure criterion.

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Drilling and coring mechanics slip line fields in plasticity soil and granular mechanics

Drilling and coring mechanics:Slip line fields in plasticity, soil and granular mechanics

Y S Ouyang

BIME/NTU

Class notes

BIME/NTU


Frictional surface indentation mode max 45 2 at free surface friction angle

Frictional surface indentation mode:τmax = 45°-ψ/2 at free surface (ψ: friction angle)

BIME/NTU



Meyerhof s theory subsurface indentaion admissible r and inadmissible l fields
Meyerhof’s theorySubsurface indentaion: Admissible (R) and inadmissible (L) fields

BIME/NTU




Frictionless surface indentation mode in plastic processing of metals:Physical diagram (L) vs. Hodograph (R)

BIME/NTU


Sticky surface indentation mode in plastic processing of metals physical diagram l vs hodograph r
Sticky surface indentation mode in plastic processing of metals:Physical diagram (L) vs. Hodograph (R)

BIME/NTU


Jet sputtering mode
Jet sputtering mode metals:

BIME/NTU


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