The objective of our work was to determine the influence of UV radiation and environmental temperature on the strength and rheological characteristics of multi-layer agricultural packaging foils. A Finite-Element-Meth...The objective of our work was to determine the influence of UV radiation and environmental temperature on the strength and rheological characteristics of multi-layer agricultural packaging foils. A Finite-Element-Method （FEM） model was developed for analyzing the foil-silo interactions at different environmental conditions. The constitutive equation of the different foils was based on Poynting-Thomson model. The measured relaxation curve was found to have a close correlation both for -10℃ and 45 ℃ with the calculated results. The result of the FEM modeling shows that both the vertical distortion of the tubular foil peak and the highest reduced tension decrease with the increase of the temperature. Therefore, the probability of foil tears increases with the decrease of the temperature because the tension strength of the tubular foil decreases under cold conditions.展开更多
文摘The objective of our work was to determine the influence of UV radiation and environmental temperature on the strength and rheological characteristics of multi-layer agricultural packaging foils. A Finite-Element-Method （FEM） model was developed for analyzing the foil-silo interactions at different environmental conditions. The constitutive equation of the different foils was based on Poynting-Thomson model. The measured relaxation curve was found to have a close correlation both for -10℃ and 45 ℃ with the calculated results. The result of the FEM modeling shows that both the vertical distortion of the tubular foil peak and the highest reduced tension decrease with the increase of the temperature. Therefore, the probability of foil tears increases with the decrease of the temperature because the tension strength of the tubular foil decreases under cold conditions.
