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Postharvest biology and technology v.126, 2017년, pp.50 - 56   SCI SCIE SCOPUS
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Mathematical modelling of mechanical damage to tomato fruits

Li, Zhiguo (School of Chemical Engineering, University of Birmingham, B15 2TT Birmingham, UK ); Andrews, James ( School of Chemical Engineering, University of Birmingham, B15 2TT Birmingham, UK ); Wang, Yuqing ( School of Mechanical and Power Engineering, Henan Polytechnic University, 454003 Jiaozuo, China );
  • 초록  

    Abstract A 3D virtual model was developed of compression of a whole tomato fruit to 10% deformation. This included a 1/4 geometrical model of the fruit, an up-plate probe and a bottom-plate base. The fruit model included the cuticle, a pericarp frame and septal tissues, and a nearly incompressible surface-based water-filled locule. The cuticle was meshed into quadrilateral membrane elements whilst the pericarp frame and septal tissues were meshed into hexahedral brick elements with an edge size of 0.4mm, approximating cells in the fruit. Assuming elastic-plastic constitutive behaviour and von Mises yield criterion for the cuticle and cell elements, the cuticle did not yield during simulation whilst the cells that had yielded were mainly distributed inside the pericarp tissues and near the stem-blossom axis. The vertical compression resulted in a main local deformation response in the contact area and a minor equatorial structural response. The internal damage volume increased from 0 to 6672mm 3 when a vertical force from 0 to 6.5N was applied and the corresponding deformation of the model fruit ranged from 0 to 10%. The relationship between internal damage volume and percentage deformation (or compression force) followed the 4-parameter sigmoidal model. Tiny internal damage of fruit at the microscale began from the start of the compression but was not easily observed when the fruit deformation was Highlights A 3D virtual model was developed to simulate compression responses of tomatoes. Pericarp tissue was meshed into elements whose size approximated tomato cells. Internal damage volume of fruit was evaluated quantitatively by FE simulation. A sigmoidal function relates the damage volume to the compression force. Tiny damage of fruit at the microscale began from the start of the compression.


  • 주제어

    Tomato fruit .   Cuticle .   Single cell .   Finite element method .   Damage area and volume.  

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