Optimal penalty stiffness values of concurrent 2D elastic interface elements leading to accurate stress tractions

Daniela Ciancio, I. Carol, G. Castellazzi

    Research output: Contribution to journalArticle

    8 Citations (Scopus)

    Abstract

    Zero-thickness interface elements are used to model contact surfaces or potential cracks. In these cases, their elastic stiffness is often set extremely high to reproduce a rigid behavior. This paper shows that the values of the stress tractions at the nodes of these elements can be affected by an error. A new procedure is proposed here, consisting of adding some nondimensional coefficients (purely geometry-dependent) to the values of the interface stiffness parameters. Thus doing, the accurate tractions at the interface nodes are recovered. © 2014 John Wiley & Sons, Ltd.
    Original languageEnglish
    Pages (from-to)344-370
    JournalInternational Journal for Numerical Methods in Engineering
    Volume98
    Issue number5
    DOIs
    Publication statusPublished - 2014

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