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Investigation on the impact and compression behavior of wet \(\upgamma \)-\(\hbox {Al}_{2}\mathrm{O}_{3}\) granules

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Abstract

The material behavior of dominant elastic–plastic \(\upgamma \)-\(\hbox {Al}_{2}\mathrm{O}_{3}\) granules has been experimentally studied by means of quasi static compression tests and dynamic impact tests until fracture. The obtained distributions of breakage velocity and specific breakage energy are compared. Thus, velocity dependent influences at stressing like viscous behavior can be derived. Additionally, the influences of particle size and moisture content on the material behavior are investigated.

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Abbreviations

\(A\) :

Area (\(\hbox {m}^{2}\))

\(C\) :

Contact point (\(-\))

\(d_{50}\) :

Mean diameter (mm)

\(E_{\mathrm{kin}}\) :

Kinetic energy (J)

\(E_{\mathrm{m}}\) :

Specific breakage energy (J/kg)

\(F\) :

Force (N)

\(m\) :

Mass (kg)

\(R, r\) :

Radius (m)

\(s\) :

Displacement (m)

\(S_{\mathrm{m}}\) :

Specific surface (\(\hbox {m}^{2}/\mathrm{kg}\))

\(V\) :

Volume (\(\hbox {m}^{3}\))

\(v\) :

Velocity (m/s)

\(v_{\mathrm{eq}}\) :

Energetic equivalent breakage velocity (m/s)

\(W_{\mathrm{B}}\) :

Strain energy (J)

\(X_{\mathrm{W}}\) :

Moisture content (\(\hbox {kg}_{{\mathrm{H}}_{2}{\text {O}}}/\mathrm{kg}_{\mathrm{TS}}\))

\(\varepsilon \) :

Porosity (\(-\))

\(\rho \) :

Density (\(\hbox {kg/m}^{3}\))

\(\sigma \) :

Stress (\(\hbox {N/m}^{2}\))

el:

Elastic

g:

Granule

tot:

Total

l:

Liquid

m:

Mean

max:

Maximum

p:

Particle

s:

Solid

TS:

Dry substance

W:

Water

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Authors and Affiliations

  1. Mechanical Process Engineering, Otto-von-Guericke University Magdeburg, Universitätsplatz 2, 39106 , Magdeburg, Germany

    Peter Müller, Sergej Aman & Jürgen Tomas

  2. Institute of Agrophysics PAS, ul. Doświadczalna 4, 20-290 , Lublin 27, Poland

    Mateusz Stasiak

Authors
  1. Peter Müller
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  3. Mateusz Stasiak
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  4. Jürgen Tomas
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Correspondence to Peter Müller.

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Müller, P., Aman, S., Stasiak, M. et al. Investigation on the impact and compression behavior of wet \(\upgamma \)-\(\hbox {Al}_{2}\mathrm{O}_{3}\) granules. Granular Matter 16, 349–357 (2014). https://doi.org/10.1007/s10035-013-0453-5

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