Actas de congresos
Mechanical Behavior Of Packed Oranges
Acta Horticulturae. , v. 562, n. , p. 319 - 326, 2001.
Dal Fabbro I.M.
This research work reports the mechanical behavior of packed oranges. Individual oranges were submitted to uni-axial load, generating force-deformation curves, from which it was possible to obtain the modulus of elasticity through the Hertz Contact Stress Theory. That theory was again used to calculate the force and deformation at the contact point of two oranges, by considering the segment joining the centers of the fruits as a truss member. A finite element model was written in order to give a proper interpretation for considering non-linear relations of force and deformation in bi and tri-dimensional orange arrangements. The computer program ANSYS 5.2 was then used in parallel with the written program as matter of comparison. The pack of oranges was theoretically loaded in the axial direction and the resulting force and deformation in the contact area compared with experimental data as well as with literature data.562319326Abbot, J.A., Massie, D.R., Watada, A.E., The use of a computer with an instron for textural measurements (1982) Journal of Texture Studies, 13, pp. 413-422Arnold, P.C., Nohsenin, N.N., Recommented techniques for axial compression test on intact agricultural products of convex shape (1970) Transactions of American Society of Agricultural Engineers. (ASAE), 14, pp. 78-84Chesson, J.Y.H., O'Brien, M., Analysis of mechanical vibrations of fruit during transport (1961) Transactions of the A.S.A.E., 14 (2), pp. 222-224Chuma, Y., Shiga, T., Mechanical properties of Satsuma oranges as related to the disign of a container for bulk transportation (1978) Journal of Texture Studies., 9, pp. 461-479Fridley, R.B., Bradley, R.A., Rumsey, L.W., Adrian, P.A., Some aspects of elastic behavior of selected fruits (1968) Transactions of the ASAE, 11 (1), pp. 46-49Laurenti, R., (1997) Influência Da Geometria de Corpos Vegetais na Determinaç ão de Propriedades Mecâncias, 200p. , Campinas: UNICAMP, 1997 Dissertação (Mestrado em Engenharia Agrícola) - Faculdade de Engenharia Agrícola, Universidade Estadual de CampinasLinares, A.W., (1996) Estudo do Comportamento Viscoelástico de Frutos Esféricos, 134p. , Campinas: UNICAMP, 1996 Dissertação (Mestrado em Engenharia Agrícola) - Faculdade de Engenharia Agrícola, Universidade Estadual de CampinasMartin, H.C., (1966) Introdution to Matrix Methods of Structural Analysis, , Mc. Graw Hill. N.J. U.S.AMorrow, C.T., Mohsenin, N.N., Consideration of selected agricultural products as viscoelastic material (1973) Journal of Food Science, 31 (5), pp. 686-698Shahabassi, Y., (1979) Experimental and Numerical Techniques Related to Maximum Allowable Depth of Apples in a Bulk Storage, , Unpublished Ph.D. Thesis. Michigan State University, East Lansing, Michigan. U.S.ASherif, S.M., Segerlind, J.L., Frame, T.S., An equation for modulus of elasticity of radially compressed cylinder (1976) Transations of ASAE, 19, pp. 782-785Timoshenko, S.P., Goodier, J.N., (1970) Theory of Elasticity, , Mc. Graw Hill. New York, N.Y. U.S.AZienkiewicz, O.C., (1977) The Finite Element Method, , Third ed. Mc. Graw Hill. (U.K.) England