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Stress distributions in loaded wheat grains

Journal Article


Abstract


  • For the purposes of understanding the way in which wheat grains are able to withstand the loads to which they are subjected during mechanical handling by conveying and processing equipment, it is necessary to have some knowledge of the stress distributions throughout the grain. For light load conditions it is shown that the grain stresses can be analyzed on the basis of elasticity theory employing the Hertz stress analysis. As the loads are increased up to the point of failure the stress distribution is rather complex and difficult to analyze theoretically. It is shown that with the aid of photo-elastic model studies in conjunction with microscopic deformation investigations on actual grains a qualitative analysis is possible. By means of this technique a better understanding of the mechanism of failure is obtained. © 1966, The British Society for Research in Agricultural Engineering. All rights reserved.

Publication Date


  • 1966

Citation


  • Arnold, P. C., & Roberts, A. W. (1966). Stress distributions in loaded wheat grains. Journal of Agricultural Engineering Research, 11(1), 38-43. doi:10.1016/S0021-8634(66)80007-0

Scopus Eid


  • 2-s2.0-0002719761

Web Of Science Accession Number


Start Page


  • 38

End Page


  • 43

Volume


  • 11

Issue


  • 1

Abstract


  • For the purposes of understanding the way in which wheat grains are able to withstand the loads to which they are subjected during mechanical handling by conveying and processing equipment, it is necessary to have some knowledge of the stress distributions throughout the grain. For light load conditions it is shown that the grain stresses can be analyzed on the basis of elasticity theory employing the Hertz stress analysis. As the loads are increased up to the point of failure the stress distribution is rather complex and difficult to analyze theoretically. It is shown that with the aid of photo-elastic model studies in conjunction with microscopic deformation investigations on actual grains a qualitative analysis is possible. By means of this technique a better understanding of the mechanism of failure is obtained. © 1966, The British Society for Research in Agricultural Engineering. All rights reserved.

Publication Date


  • 1966

Citation


  • Arnold, P. C., & Roberts, A. W. (1966). Stress distributions in loaded wheat grains. Journal of Agricultural Engineering Research, 11(1), 38-43. doi:10.1016/S0021-8634(66)80007-0

Scopus Eid


  • 2-s2.0-0002719761

Web Of Science Accession Number


Start Page


  • 38

End Page


  • 43

Volume


  • 11

Issue


  • 1