Publicación:
TWO-DIMENSIONAL SIMULATION OF MECHANICAL STRESSES DURING ISOTHERMAL DRYING OF EUCALYPTUS NITENS WOOD

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dc.creatorHÉCTOR ANDRÉS VARGAS POBLETE
dc.creatorNATALIA DE LOS ANGELES PÉREZ PEÑA
dc.creatorCARLOS HERNÁN SALINAS LIRA
dc.creatorRUBÉN ANDRÉS ANANÍAS ABUTER
dc.date2020
dc.date.accessioned2025-01-10T15:14:17Z
dc.date.available2025-01-10T15:14:17Z
dc.date.issued2020
dc.description.abstractIN THIS WORK, A TWO-DIMENSIONAL MATHEMATICAL MODEL OF THE MOISTURE TRANSPORT AND STRESS?STRAIN PHENOMENA DURING THE CONVENTIONAL DRYING PROCESS OF EUCALYPTUS NITENS WOOD IS PRESENTED. THE MODEL CONSISTS OF A SYSTEM OF PARTIAL DIFFERENTIAL NONLINEAR SECOND-ORDER EQUATIONS, WHERE THE MOISTURE TRANSPORT PHENOMENON IS MODELED ON THE CONCEPT OF EFFECTIVE DIFFUSION, AND THE STRESSES ARE MODELED ON THE HYPOTHESIS OF VISCOELASTIC DEFORMATION, WHICH IS STRONGLY LINKED TO THE STRAINS BY FREE CONTRACTION AND MECHANO-SORPTION. THE DRYING WAS ASSUMED AS AN ISOTHERMAL PROCESS AND WITHOUT EFFECTS OF SUSTAINED LOADS OVER TIME (CREEP). EXPERIMENTAL TESTS WERE ALSO CARRIED OUT UNDER CONSTANT PSYCHOMETRIC CONDITIONS AT 30/25 (°C/°C) IN ORDER TO OBTAIN TRANSIENT DISTRIBUTIONS OF MOISTURE AND STRESS. FROM THESE EXPERIMENTAL DATA, THE PHYSICAL PARAMETERS OF THE PROPOSED MATHEMATICAL MODEL WERE OBTAINED BY OPTIMIZATION IN A CONTEXT OF INVERSE PROBLEM. THE NUMERICAL SOLUTION OF THE MODEL WAS OBTAINED THROUGH THE METHOD OF CONTROL VOLUMES COMBINED WITH FINITE ELEMENTS. THE RESULTS OF TRANSIENT DISTRIBUTION OF MOISTURE AND STRESS CORRELATE WELL WITH THE EXPERIMENTAL DATA.
dc.formatapplication/pdf
dc.identifier.doi10.1007/s00226-019-01147-3
dc.identifier.issn1432-5225
dc.identifier.issn0043-7719
dc.identifier.urihttps://repositorio.ubiobio.cl/handle/123456789/11065
dc.languagespa
dc.publisherWOOD SCIENCE AND TECHNOLOGY
dc.relation.uri10.1007/s00226-019-01147-3
dc.rightsPUBLICADA
dc.titleTWO-DIMENSIONAL SIMULATION OF MECHANICAL STRESSES DURING ISOTHERMAL DRYING OF EUCALYPTUS NITENS WOOD
dc.title.alternativeSIMULACIÓN BIDIMENSIONAL DE TENSIONES MECÁNICAS DURANTE EL SECADO ISOTÉRMICO DE MADERA DE EUCALYPTUS NITENS
dc.typeARTÍCULO
dspace.entity.typePublication
ubb.EstadoPUBLICADA
ubb.Otra ReparticionRECTORIA
ubb.Otra ReparticionDIRECCION DE INVESTIGACION Y CREACION ARTISTICA
ubb.Otra ReparticionDEPARTAMENTO DE INGENIERIA MECANICA
ubb.Otra ReparticionDEPARTAMENTO DE INGENIERIA EN MADERAS
ubb.SedeCONCEPCIÓN
ubb.SedeCONCEPCIÓN
ubb.SedeCONCEPCIÓN
ubb.SedeCONCEPCIÓN
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