Theoretical investigation of the transverse pressing of particulate materials

Zhdanovich, G. M.; Сидоров, В. А.; Yakubovskii, Ch. A.

doi:10.1007/bf00802565

Cited by 4 publications

(16 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results of approximation by the Secondi's Equation ( 18) of these powders are shown in Figure 4, and the values of constant parameters and the coefficient of determination are listed in Table 6. In addition, Figure 4 and Table 6 also show for comparison the results of these powders approximation by Equation (14). As seen, the Equation ( 18) describes PCP for brittle and ductile powders with higher accuracy than Equation ( 14) does.…”

Section: Parametermentioning

confidence: 86%

“…Lüdde ( 16) and the equation of Ge Rong-de, A. B. Yu and Z. H. Gu, L. Parilak and E. Dudrova (14), we used the experimental data on the compaction of powders of iron, copper and nickel presented in Table 1. The results of approximation are presented in the form of graphs in Figure 3, and the values of the constants of Equations ( 16) and ( 14) and the coefficient of determination R 2 are shown in Table 4.…”

Section: Parametermentioning

confidence: 99%

“…where m = 1/n and B = (1/K) m are new constants. It is of interest to check the accuracy of PCP description for different powders by Equation (12), or rather by Equation (14). Prior to this, we need to remember one more equation which also contains the powder initial density and two constants, and which was proposed much earlier than the Equation (12).…”

Section: Parametermentioning

confidence: 99%

“…Later the proposed equations took into account various physical phenomena occurring in PCP such as contact interaction of particles, local and general deformation, hardening, shear between particles and within particles, friction, etc. [12][13][14][15][16][17]. To derive the equations with physical constants, some researchers considered a powder body as a combination of a large number of individual particles contacting each other [14,18,19].…”

Section: Introductionmentioning

confidence: 99%

“…[12][13][14][15][16][17]. To derive the equations with physical constants, some researchers considered a powder body as a combination of a large number of individual particles contacting each other [14,18,19]. An approach based on the evolution of the contact interaction between individual particles under the effect of pressure can be designated as a discrete PCP theory.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

New Die-Compaction Equations for Powders as a Result of Known Equations Correction: Part 1–Review and Analysis of Various Die-Compaction Equations

Laptiev

2024

Powders

View full text Add to dashboard Cite

The well-known equations for the powder compaction process (PCP) in a rigid die published from the beginning of the last century until today were considered in this review. Most of the considered equations are converted into the dependences of densification pressure on the powder’s relative density. The equations were analyzed and their ability to describe PCP was assessed by defining the coefficient of determination when approximating experimental data on the compaction of various powders. It was shown that most of the equations contain two constants the values of which are determined by fitting the mathematical dependence to the experimental curve. Such equations are able to describe PCP with high accuracy for the compaction of powders up to a relative density of 0.9–0.95. It was also shown that different equations can describe PCP in the density range from the initial density to 0.9 with the same high accuracy, but when the process of compaction is extrapolated to higher values of density, the curves diverge. This indicates the importance of equations that can unambiguously describe PCP to a relative density equal to or close to 1.0. For an adequate description of PCP for relative density greater than 0.95, equations containing three or four constants have proven useful.

show abstract

Section: Parametermentioning

confidence: 86%

Section: Parametermentioning

confidence: 99%

Section: Parametermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

New Die-Compaction Equations for Powders as a Result of Known Equations Correction: Part 1–Review and Analysis of Various Die-Compaction Equations

Laptiev

2024

Powders

View full text Add to dashboard Cite

show abstract

Theoretical investigation of the transverse pressing of particulate materials II. Pressure and density distribution in the seat of deformation in transverse pressing with axial prepressing

Zhdanovich

Сидоров

Yakubovskii

1982

Powder Metall Met Ceram

View full text Add to dashboard Cite

New Die-Compaction Equations for Powders as a Result of Known Equations’ Correction. Part 1. Review and Analysis of Various Die-Compaction Equations

Laptiev

2023

Preprint

View full text Add to dashboard Cite

The well-known equations for the process of powder compaction (PCP) in a rigid die published over the period from the beginning of the last century to the present are considered. Most of the considered equations are converted into the dependence of the densification pressure on the relative density. The equations were analyzed and their ability to describe PCP was assessed by determining the coefficient of determination when approximating experimental data on the compaction of various powders. It is shown that most of the equations contain two constants, the values of which are determined by fitting the mathematical dependence to the experimental curve. Such equations are able to describe PCP with high accuracy in the case of compaction of powders up to a relative density of 0.9-0.95. It is also shown that different equations can describe PCP in the range of density change from the initial to 0.9 with the same and sufficiently high accuracy, but when the process of compaction is extrapolated to higher values of density, the curves diverge. This indicates the importance of equations that can unambiguously describe PCP to a relative density equal to or close to 1.0. For an adequate description of PCP to a relative density greater than 0.95, equations containing three or four constants have proven themselves well.

show abstract

Theoretical investigation of the transverse pressing of particulate materials

Cited by 4 publications

References 1 publication

New Die-Compaction Equations for Powders as a Result of Known Equations Correction: Part 1–Review and Analysis of Various Die-Compaction Equations

New Die-Compaction Equations for Powders as a Result of Known Equations Correction: Part 1–Review and Analysis of Various Die-Compaction Equations

Theoretical investigation of the transverse pressing of particulate materials II. Pressure and density distribution in the seat of deformation in transverse pressing with axial prepressing

New Die-Compaction Equations for Powders as a Result of Known Equations’ Correction. Part 1. Review and Analysis of Various Die-Compaction Equations

Contact Info

Product

Resources

About