Res. Agr. Eng., 2004, 50(1):11-14 | DOI: 10.17221/4920-RAE

Influence of moisture content on pressure ratio of rape seeds

R. Rusinek, J. £ukaszuk
Institute of Agrophysics, Polish Academy of Sciences, Lublin, Poland

The pressure ratio of rape seeds was determined for four levels of moisture content in a model silo. The silo was 0.6 m in diameter and 0.6 m high. Ratio of horizontal to vertical pressure and distributions of local horizontal to vertical pressure along the radius of the floor in the model silo were determined for cycles of loading and unloading simulated conditions observed in a silo (in a range of 0-13 kPa). The sample was poured into the model silo through centrally located spout, without vibration or other compacting actions. The pressure ratio rape seeds generally decreased with an increase in moisture content. Experimental results were compared with simplified approximation recommended by the Eurocode 1 (2003) and theoretical values obtained for active and passive stress case.

Keywords: pressure ratio; granular material; rape seed; model silo

Published: March 31, 2004  Show citation

ACS AIP APA ASA Harvard Chicago Chicago Notes IEEE ISO690 MLA NLM Turabian Vancouver
Rusinek R, £ukaszuk J. Influence of moisture content on pressure ratio of rape seeds. Res. Agr. Eng. 2004;50(1):11-14. doi: 10.17221/4920-RAE.
Share...
Download citation
  • BibTeX (.bib)
  • Bookends (.ris)
  • EasyBib (.ris)
  • EndNote (.enw)
  • EndNote 8 (.xml)
  • ISI WoS (.isi)
  • Medlars (.medlars)
  • Mendeley (.ris)
  • MODS (.xml)
  • Papers (.ris)
  • RefWorks (.txt)
  • RefManager (.ris)
  • RIS (.ris)
  • MS Word (.xml)
  • Zotero (.ris)
    • Open full article

    References

    1. ATEWOLOGUN A.O., RISKOWSKI G.L., 1991. Experimental determination of Janssen's stress ratio by four methods for soybeans under static conditions. Trans. ASAE, 34: 2193-2197. Go to original source...
    2. EUROCODE 1, 2003. Actions on structures. Part 4. Actions in silos and tanks. DD ENV 1991-1994.
    3. HORABIK J., MOLENDA M., 2000. Device for determination of pressure ratio of granular materials. Patent Application 340017 (in Polish).
    4. HORABIK J., RUSINEK R., 2000. Determination of the pressure ratio of plant granular solids. Part I and II. Experimental investigations (in Polish). Acta Agrophysica, 37: 61-81.
    5. HORABIK J., RUSINEK R., 2002. Pressure ratio of cereal grains determined in uniaxial compression test. Int. Agrophysics, 16: 23-28.
    6. JAKY J., 1948. Pressures in silo. Proc. 2nd Int. Conf. On Silo Mech. & Found. Engng., 1: 103-107.
    7. JANSSEN H.A., 1895.Versuche über Getreidedruck in Silozellen. Verein Deutscher Ingenieure, Zeitschrift (Düsseldorf), 39: 1045-1049.
    8. LOHNES R.A., 1993. Lateral stress ratios for particulate materials. Powder Handling and Processing, 5: 331-335.
    9. £UKASZUK J., HORABIK J., 2002. Determination of the angle of internal friction of plant granular solids (in Polish). Acta Agrophysica, 64.
    10. MOYSEY E.B., 1979. Active and passive pressures in deep grain bin. Trans. ASAE, 77: 1409-1413. Go to original source...
    11. RANKINE W., 1857. On the stability of loose earth. Phil. Trans. Roy. Soc., London, 147: 9-28. Go to original source...
    12. WILMS H., 1991. Criteria for evaluation of silo design codes. Bulk Solids Handling, 11: 55-61.

    This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY NC 4.0), which permits non-comercial use, distribution, and reproduction in any medium, provided the original publication is properly cited. No use, distribution or reproduction is permitted which does not comply with these terms.


    Return to the content