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  • Hybrid-mixed shell quadrilateral that allows for large solution steps and is low-sensitive to mesh distortion
    Lavrenčič, Marko, 1992- ; Brank, Boštjan
    We compare three nearly optimal quadrilateral finite elements for geometrically exact inextensible-director shell model. Two of them are revisited and one is novel. The assumed natural strain (ANS) ... element of Ko et al. (Comput Struct 185:1-14, 2017) shows low sensitivity to mesh distortion and excellent convergence behavior for most types of shell problems. The Hu Washizu element with ANS shear strains of Wagner and Gruttmann (Int J Numer Methods Eng, 64:635-666, 2005) allows for large solution steps and is computationally fast. However, both formulations have undesirable weak spots, which we clearly identify by a comprehensive set of numerical examples. We show that a straightforward combination of both formulations results in a novel element that synergizes the positive features and eliminates the weak spots of its predecessors.
    Vir: Computational mechanics. - ISSN 0178-7675 (Letn. 65, št. 1, 2020, str. 177-192)
    Vrsta gradiva - članek, sestavni del ; neleposlovje za odrasle
    Leto - 2020
    Jezik - angleški
    COBISS.SI-ID - 8875617

    Povezava(-e):

    https://link.springer.com/content/pdf/10.1007%2Fs00466-019-01759-3.pdf
    Repozitorij Univerze v Ljubljani – RUL
    DOI

vir: Computational mechanics. - ISSN 0178-7675 (Letn. 65, št. 1, 2020, str. 177-192)
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