TY - JOUR

T1 - Nonlinear FEM based high-speed shell shattering simulation for shelled edible agricultural products

T2 - Pecan fruit shattering

AU - Celik, H. Kursat

AU - Caglayan, Nuri

AU - Rennie, Allan Edward Watson

N1 - This is the peer reviewed version of the following article: Celik HK, Caglayan N, Rennie AEW. Nonlinear FEM based high-speed shell shattering simulation for shelled edible agricultural products: Pecan fruit shattering. J Food Process Eng. 2017;40:e12520. https://doi.org/10.1111/jfpe.12520 which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1111/jfpe.12520/abstract This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.

PY - 2017/10

Y1 - 2017/10

N2 - This paper introduces an advanced engineering simulation procedure for the nonlinear finite element method (FEM) based high-speed shattering case of shelled edible agricultural products. A high-speed impactor which is targeted at the Pecan fruit (kernel-in-shell) was considered in this case study. Physical compression tests were conducted on Pecan fruit specimens and experimental deformation characteristics were utilized to describe realistic material models in the FEM based engineering simulation. Subsequently, a reverse engineering approach was employed in the solid modeling stage and the Pecan shell shattering case under high-speed loading was simulated, considering the explicit dynamics approach. The effect of the high loading rate on the deformation characteristics of the Pecan fruit components was observed. Visual outputs from the simulation revealed the shattering behavior of the Pecan fruit components under defined boundary conditions. In addition to useful visual simulation outputs, time-dependant stress distributions on the Pecan fruit under high-speed loading rates were represented using graphs. Simulation results have revealed that maximum equivalent stress values were 7.1 (MPa), 5.1 (MPa), and 0.336 (MPa) for shell, packing material, and kernel, respectively. Maximum reaction force at impact was calculated as 996,000 (N). This work contributes to further research into the use of nonlinear numerical method based high-speed deformation simulation studies for shelled edible agricultural products.

AB - This paper introduces an advanced engineering simulation procedure for the nonlinear finite element method (FEM) based high-speed shattering case of shelled edible agricultural products. A high-speed impactor which is targeted at the Pecan fruit (kernel-in-shell) was considered in this case study. Physical compression tests were conducted on Pecan fruit specimens and experimental deformation characteristics were utilized to describe realistic material models in the FEM based engineering simulation. Subsequently, a reverse engineering approach was employed in the solid modeling stage and the Pecan shell shattering case under high-speed loading was simulated, considering the explicit dynamics approach. The effect of the high loading rate on the deformation characteristics of the Pecan fruit components was observed. Visual outputs from the simulation revealed the shattering behavior of the Pecan fruit components under defined boundary conditions. In addition to useful visual simulation outputs, time-dependant stress distributions on the Pecan fruit under high-speed loading rates were represented using graphs. Simulation results have revealed that maximum equivalent stress values were 7.1 (MPa), 5.1 (MPa), and 0.336 (MPa) for shell, packing material, and kernel, respectively. Maximum reaction force at impact was calculated as 996,000 (N). This work contributes to further research into the use of nonlinear numerical method based high-speed deformation simulation studies for shelled edible agricultural products.

KW - engineering simulation

KW - explicit dynamics

KW - high-speed shell shattering

KW - Pecan fruit

KW - shelled agricultural products

U2 - 10.1111/jfpe.12520

DO - 10.1111/jfpe.12520

M3 - Journal article

VL - 40

JO - Journal of Food Process Engineering

JF - Journal of Food Process Engineering

SN - 1745-4530

IS - 5

M1 - e12520

ER -