TY - CONF

T1 - Finite Displacements and Corrotational Interfaces: Consistent formulation and Symmetry of the Stiffness Matrix

AU - Borino, Guido

AU - Parrinello, Francesco

PY - 2017

Y1 - 2017

N2 - Mechanical interfaces are theoretical and computational tools able to properly reproduce then progressive delamination of composite structures. Scientific literature is rich of interface models, mostly developed in small displacements, whereas a few of them assess the problem in a geometrically nonlinear setting.In the present paper interface formulation is rigorously developed in a geometrically nonlinear setting, and the relevant interface constitutive relations are defined in the local reference with normal and tangential axes to the middle surface in the current configuration. The interface is defined as a zero thickness layer with tractions acting between the two connected surfaces. Membrane forces are assumed negligible and separation displacement is assumed to remain small, at least up to full debonding. Under this “constitutive” hypothesis rotational equilibrium is implicitly verified.

AB - Mechanical interfaces are theoretical and computational tools able to properly reproduce then progressive delamination of composite structures. Scientific literature is rich of interface models, mostly developed in small displacements, whereas a few of them assess the problem in a geometrically nonlinear setting.In the present paper interface formulation is rigorously developed in a geometrically nonlinear setting, and the relevant interface constitutive relations are defined in the local reference with normal and tangential axes to the middle surface in the current configuration. The interface is defined as a zero thickness layer with tractions acting between the two connected surfaces. Membrane forces are assumed negligible and separation displacement is assumed to remain small, at least up to full debonding. Under this “constitutive” hypothesis rotational equilibrium is implicitly verified.

KW - Corrotational formulation

KW - Finite displacements

KW - Mechanical interfaces

KW - Corrotational formulation

KW - Finite displacements

KW - Mechanical interfaces

UR - http://hdl.handle.net/10447/264073

UR - https://assets.tue.nl/fileadmin/content/faculteiten/wtb/Onderzoek/Onderzoeksgroepen/Mechanics_of_Materials/Events/Composites2017/Program/Final_Programme_Composites2017.pdf

M3 - Other

SP - 52

EP - 52

ER -