Mathematical modelling of mechanical damage to tomato fruits
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.
- 원문이 없습니다.
- DOI : http://dx.doi.org/10.1016/j.postharvbio.2016.12.001
- Elsevier : 저널> 권호 > 논문
유료 다운로드의 경우 해당 사이트의 정책에 따라 신규 회원가입, 로그인, 유료 구매 등이 필요할 수 있습니다. 해당 사이트에서 발생하는 귀하의 모든 정보활동은 NDSL의 서비스 정책과 무관합니다.
원문복사신청을 하시면, 일부 해외 인쇄학술지의 경우 외국학술지지원센터(FRIC)에서
무료 원문복사 서비스를 제공합니다.
NDSL에서는 해당 원문을 복사서비스하고 있습니다. 위의 원문복사신청 또는 장바구니 담기를 통하여 원문복사서비스 이용이 가능합니다.
- 이 논문과 함께 출판된 논문 + 더보기