“Force-Displacement Response of Elastic-Plastically Bonded Composite Tie Bars”, Rapporti di Studi e Ricerche del Dipartimento di Ingegneria Strutturale dell’Università di Pisa, N° 10, 2002.

  • Abstract:
    The analytical description of the non linear behaviour of a composite tensile bar is performed by means of the K-value theory extended to the domain of the irreversible relative displacements which develop in the bond layer between the core and the coating material.
    The analytical model allows to emphasise the influence exerted by the stiffness of the materials and by the form of the core cross section on the condition that the plasticity initiation contemporary occurs in the core and in the bond layer.

“Some Analytical Notes on the Elastic-Plastic Anchorage of Ductile Bars”, Rapporti di Studi e Ricerche del Dipartimento di Ingegneria Strutturale dell’Università di Pisa, N° 11, 2003.

“Analytical Remarks on the Anchorage of Elastic-plastically bonded Ductile Bars”, International Journal of Mechanical Sciences, Vol.49, N°5, May 2007 (www.sciencedirect.com).

  • Abstract: A simple analytical extension of Hermite-Bresson’s results to the domain of the irreversible relative displacements allows the description of the non-linear force-displacement response of a tensile bar embedded in a massive support by means of an elastic-plastic bonding agent.The analytical model evidences the influence of the main governing parameters on the attainment of two ideal anchorage conditions of plasticity initiation occurring in the bar simultaneously with that of the bond material (anchorage length LIP), or of plasticity initiation occurring in the bar just after the complete yielding of this one (anchorage length LCP).The ratio between the expressions of these two anchorage lengths reveals an interesting, compact mathematical form of eloquent mechanical meaning which allows the immediate determination of anchorage length LIP.

Citazione:  Zhao Y.: Yang M. “Pull-out Behavior of an Imperfectly Bonded Anchor System” Intern.Journ.of Rock Mechanics and Mining Sciences, Vol.48, Issue 3, 2011, pgg. 469-475