Shape Effects of the Yield Locus on the Rankine Coefficient

Takenaka, Kazuhiko; Iimura, Kenji; Suzuki, Michitaka; Hirotab, M.

doi:10.1163/156855208x291701

Cited by 8 publications

(1 citation statement)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several developments have been made to both shear test equipment [25] and analytical methods [26,27], allowing use of the technique in expanded application areas. In the Jenike shear tester, the normal stress on the powder bed is determined by a weight placed on top of the powder and the normal stress on the horizontal crosssectional area decreases due to the friction between the powder bed and the side wall of the shear cell.…”

Section: Introductionmentioning

confidence: 99%

Analysis of constant-volume shear tests based on precise measurement of stresses in powder beds

Shimada

Kawata

Matsusaka

2018

Advanced Powder Technology

View full text Add to dashboard Cite

a b s t r a c tThis study demonstrates a new constant-volume shear test configuration to analyze the stresses in powder beds and evaluate powder flowability. A novel cylindrical shear cell geometry and load cell arrangement allowed precise measurement of the normal stress acting on the shear planes of the powder beds. The stress transmission ratio between the top and shear planes decreased with increasing ratio of the powder bed height in the upper section of the shear cell to the shear cell diameter. This was due to friction between the powder bed and the side wall of the upper section of the shear cell. Using the measured values of the normal stress on the shear planes, the effects of the powder bed height and shear cell diameter were eliminated from the data. In addition, to evaluate the shear properties of the powder beds, the powder yield locus, consolidation yield locus, critical state line, shear cohesion, and void fraction were obtained from a single shear test. The powder yield locus data were used to obtain flow functions.

show abstract

Section: Introductionmentioning

confidence: 99%

Analysis of constant-volume shear tests based on precise measurement of stresses in powder beds

Shimada

Kawata

Matsusaka

2018

Advanced Powder Technology

View full text Add to dashboard Cite

show abstract

A device for the measurement of the horizontal to vertical stress ratio in powders

Poletto

2013

Granular Matter

View full text Add to dashboard Cite

A new experimental device for the measurement of the hzorizontal to vertical stress ratio was developed. The tester is designed to conduct the requiredmeasurements using a single standard load cell without the need to apply strain gauges on custom built parts.Three different procedures were tested with free-flowing incompressible powders to determine the most precise procedure. This optimal procedure included the preliminary twisting of the cell lid to pre-shear the sample and was modified to conduct experiments with cohesive compressible powders. The results obtained from the best procedure were compared with those from commonly used estimating equations for the horizontal to vertical stress ratio as a function of the angle of internal friction.\ud The obtained results were consistent with the Koenen equation(Koenen in Centralblatt der Bauverwaltung 16:446–449, 1896) for free-flowing materials and with theDIN 1055 equation (DIN 1055 Teil 6, Lastannahmen für Bauten, Lasten in Silozellen, 1987) for cohesive materials

show abstract

A revised methodology for the determination of bulk material cohesion and adhesion

Carr

Roberts

Wheeler

2019

Advanced Powder Technology

View full text Add to dashboard Cite

Shape Effects of the Yield Locus on the Rankine Coefficient

Cited by 8 publications

References 14 publications

Analysis of constant-volume shear tests based on precise measurement of stresses in powder beds

Analysis of constant-volume shear tests based on precise measurement of stresses in powder beds

A device for the measurement of the horizontal to vertical stress ratio in powders

A revised methodology for the determination of bulk material cohesion and adhesion

Contact Info

Product

Resources

About