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Gravity Flow of Powder in a Lunar Environment. 2. Analysis of Flow Initiation.

PB205504

Publication Date	1971
Personal Author	Pariseau, W. G.
Page Count	26
Abstract	A small displacement-small strain finite element technique utilizing the constant strain triangle and incremental constitutive equations for elastic-plastic media that are nonhardening and obey a Coulomb yield condition has been applied to the analysis of gravity flow initiation in a V-shaped hopper containing a powder under lunar environmental conditions. Three methods of loading were examined. (Author)
Keywords	Soil properties Lunar dust Lunar environment Open channel flow Soil analysis Soil mechanics Mathematical models Strains Flow stress Experimental design Finite element analysis
Source Agency	Invalid Source Agency Code
NTIS Subject Category	54A - Astrogeology
Corporate Authors	BUREAU OF Mines, Washington, D.C.
Supplemental Notes	See also PB-203 654.
Document Type	Technical Report
Title Note	Rept. of Investigations.
NTIS Issue Number	197204

Gravity Flow of Powder in a Lunar Environment. 2. Analysis of Flow Initiation.

Gravity Flow of Powder in a Lunar Environment. 2. Analysis of Flow Initiation.
PB205504

Publication Date	1971
Personal Author	Pariseau, W. G.
Page Count	26
Abstract	A small displacement-small strain finite element technique utilizing the constant strain triangle and incremental constitutive equations for elastic-plastic media that are nonhardening and obey a Coulomb yield condition has been applied to the analysis of gravity flow initiation in a V-shaped hopper containing a powder under lunar environmental conditions. Three methods of loading were examined. (Author)
Keywords	Soil properties Lunar dust Lunar environment Open channel flow Soil analysis Soil mechanics Mathematical models Strains Flow stress Experimental design Finite element analysis
Source Agency	Invalid Source Agency Code
NTIS Subject Category	54A - Astrogeology
Corporate Authors	BUREAU OF Mines, Washington, D.C.
Supplemental Notes	See also PB-203 654.
Document Type	Technical Report
Title Note	Rept. of Investigations.
NTIS Issue Number	197204