Stress resultant plasticity for shells revisited

Jaka Dujc in Boštjan Brank (2012) Stress resultant plasticity for shells revisited. Computer Methods in Applied Mechanics and Engineering, 247 (248). str. 146-165. ISSN 0045-7825

Prenos (10Mb)


    In this work, we revisit the stress resultant elastoplastic geometrically exact shell finite element formulation that is based on the Ilyushin–Shapiro two-surface yield function with isotropic and kinematic hardening. The main focus is on implicit projection algorithms for computation of updated values of internal variables for stress resultant shell elastoplasticity. Four different algorithms are derived and compared. Three of them yield practically identical final results, yet they differ considerably in computational efficiency and implementation complexity, since they solve different sets of equations and they use different procedures that choose active yield surfaces. One algorithm does not provide acceptable accuracy. It turns out that the most simple and straightforward algorithm performs surprisingly well and efficiently. Several numerical examples are presented to illustrate the Ilyushin–Shapiro stress resultant shell formulation and the numerical performance of the presented integration algorithms.

    Vrsta dela: Članek
    Ključne besede: Shell; Geometrically exact model; 4-node finite element; Stress resultant plasticity; Two-surface yield function; Implicit integration algorithms
    Povezani naslovi URL:
    URLTip URLžnik
    Povezava na COBISS:
    Ustanova: Univerza v Ljubljani
    Fakulteta: Fakulteta za gradbeništvo in geodezijo
    Katedre: Fakulteta za gradbeništvo in geodezijo > Oddelek za gradbeništvo > Katedra za konstrukcije in potresno inženirstvo (KKPI)
    ID vnosa: 4424

    Akcije (potrebna je prijava)

    Pregled vnosa

    Prenosi dokumenta

    Še več statistike za to delo...