• a constitutive model for the mechanical response of the folding of creased paperboard

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/01/01
    • تاریخ انتشار در تی پی بین: 1392/01/01
    • تعداد بازدید: 857
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     paperboard is a widely used material in industrial processes, in particular for packaging purposes. packages are obtained through a forming process, in which a flat laminated sheet is converted into the final 3-d solid. in the package forming process, it is common practice to score the paperboard laminate with crease lines, in order to obtain folds with sharp edges and to minimize the initiation and propagation of flaws during the subsequent folding procedures. in this work, a constitutive model for the mechanical response of crease lines is proposed and validated on the basis of experimental tests available in the literature. the model has been implemented in an interface finite element to be placed between adjacent shell elements and is intended for large-scale computations of package forming processes. for this reason, the material model has been developed at the macroscopic scale in terms of generalized variables, aiming at computational effectiveness.

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