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A Mathematical Model for Predicting Soybean Seedcoat Cracking During Drying
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1985
Year
Materials ScienceEngineeringDesiccationBoltzmann Superposition PrincipleMechanical BehaviorMechanicsSoybean Seedcoat CrackingMechanical EngineeringStressstrain AnalysisRheologySolid MechanicsSoybean SeedcoatFood EngineeringCrack FormationDynamic Crack PropagationMechanics Of MaterialsShrinkage Stresses
ABSTRACT Auni-axial viscoelastic model, applying the finite difference approach and the Boltzmann Superposition Principle, was developed for simulating shrinkage stresses tending to cause soybean seedcoat cracking during drying. The model was used to predict tensile stresses developed within the seedcoat for several drying conditions. For the experimental drying conditions used in this study for verification, the model did not predict the exact onset of cracking. However, it predicted stress profiles consistent with cracking trends observed in practice with regard to (a) probable cracking period, (b) air temperature effects and (c) air relative humidity effects.