Dynamic behavior of the macauba palm (Acrocomia aculeata) fruit-rachilla system using the stochastic finite element method

dc.creatorRangel, Jéssica Pontes
dc.creatorQueiroz, Daniel Marçal de
dc.creatorPinto, Francisco de Assis de Carvalho
dc.creatorTeixeira, Cleonice Campos
dc.creatorSantos, Fábio Lúcio
dc.creatorValente, Domingos Sárvio Magalhães
dc.date2022-06-07T22:06:27Z
dc.date2022-06-07T22:06:27Z
dc.date2020-11
dc.date.accessioned2023-09-28T20:08:07Z
dc.date.available2023-09-28T20:08:07Z
dc.identifierRANGEL, J. P. et al. Dynamic behavior of the macauba palm (Acrocomia aculeata) fruit-rachilla system using the stochastic finite element method. Acta Scientiarum. Agronomy, Maringá, v. 43, e48565, 2021. DOI: 10.4025/actasciagron.v43i1.48565.
dc.identifierhttp://repositorio.ufla.br/jspui/handle/1/50125
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/9045289
dc.descriptionThe search for alternative energy sources has fomented the study of several crops. The macauba palm crop, for instance, has been highlighted because of its particular relevance in Brazil due to its wide distribution across Brazilian territory and its potential for yielding high amounts of oil per cultivated hectare. However, the species is still most commonly harvested via extractivism, which results in low yields. Therefore, we aimed to analyze the dynamic behavior of the fruit-rachilla system when subjected to mechanical vibration to gather baseline information for the subsequent development of macauba harvesting machines. The fruit-rachilla system of the species was modeled for different fruit maturation stages and plant accessions. Natural frequencies and modes of vibration were determined by the stochastic finite element method (FEM), adopting the specific mass and the modulus of elasticity of the system as random variables, which enabled us to compile a dataset of natural frequencies based on the variability of the system properties. The mean values of the natural frequencies obtained in the vibration assays were 26.02 Hz at the green maturation stage and 21.22 Hz at the ripe maturation stage. The mean values of natural frequencies found in the simulation by stochastic FEM, referring to the third mode of vibration, were 26.05 Hz at the green maturation stage and 21.23 Hz at the ripe maturation stage. We concluded that the natural frequencies of the macauba fruit-rachilla system on the basis of different plant accessions showed a decreasing behavior during fruit maturation. The modes of vibration characterized by pendulum displacement did not differ among plant accessions or between fruit maturation stages.
dc.formatapplication/pdf
dc.languageen
dc.publisherUniversidade Estadual de Maringá
dc.rightsAttribution 4.0 International
dc.rightsacesso aberto
dc.rightshttp://creativecommons.org/licenses/by/4.0/
dc.sourceActa Scientiarum. Agronomy
dc.subjectBiodiesel
dc.subjectStochastic processes
dc.subjectNatural frequencies
dc.subjectModes of vibration
dc.subjectPalm tree
dc.subjectMacaúba
dc.subjectProcessos estocásticos
dc.subjectFrequências naturais
dc.subjectModos de vibração
dc.subjectPalmeira
dc.titleDynamic behavior of the macauba palm (Acrocomia aculeata) fruit-rachilla system using the stochastic finite element method
dc.typeArtigo


Este ítem pertenece a la siguiente institución