G. Giambanco


Ostatnie publikacje
1.Giambanco G., Mróz Z., The Interphase Model for the Analysis of Joints in Rock Masses and Masonry Structures, MECCANICA, ISSN: 0025-6455, DOI: 10.1023/A:1011957217840, Vol.36, No.1, pp.111-130, 2001

Streszczenie:

To study the response of cementitious joints in rock masses or masonry structures, the model of interphase is considered for which the contact stresses and strains interact with the internal stresses or strains within the joint. The frictional slip and sliding effects are then combined with the inelastic deformations of the joint. The constitutive model of the joint is analysed by assuming two interfaces separating the joint from the adjacent material. The case of a cementitious layer interposed between two rigid bodies is treated in detail.

Słowa kluczowe:

Softening, Contact, Interfaces, Cohesive joint

Afiliacje autorów:

Giambanco G.-other affiliation
Mróz Z.-IPPT PAN
2.Mróz Z., Giambanco G., An interface model for analysis of deformation behaviour of discontinuities, INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS, ISSN: 0363-9061, DOI: 10.1002/(SICI)1096-9853(199601)20:1<1::AID-NAG799>3.0.CO;2-L, Vol.20, No.1, pp.1-33, 1996

Streszczenie:

An interface constitutive model is presented accounting for slip and sliding effects and also for dilatancy phenomena. The microslip effects are described by considering spherical asperity interaction with variation of contact area and generation of progressive or reverse slip zones. The incremental constitutive equations are derived with proper memory rules accounting for generation and annihilation of particular slip zones during the process of variable loading. It is further assumed that sliding of spherical contacts occurs along large asperities whose slope varies due to the wear process. The predicted shear and dilatancy curves are shown to provide close quantitative simulation of available experimental data. The strain ratchetting effect for non-symmetric cyclic loading was exhibited using the asperity wear model. The model presented could be applied to simulate rock joints, masonry, or concrete cracked interfaces, under monotonic and cyclic loading.

Afiliacje autorów:

Mróz Z.-IPPT PAN
Giambanco G.-IPPT PAN