Physically nonlinear analysis of metal beams in the context of GBT

A GBT formulation for 1st order elastoplastic analysis is presented and its application illustrated for a elastic-perfectly plastic simply supported I-setion beam subjected to point loads at mid-span. GBT results were validated against ABAQUS by means of shell finite element models. There is an excellent agreement in that comparison, particularlly regarding equilibrium paths and deformed configurations. With respect to stress diagrams, GBT results are very satisfactory for axial, shear and von Mises stresses, but distinct with respect to transverse normal stresses. However, the transverse normal stress 3D contours are qualitatively similar between GBT and ABAQUS in the whole beam domain.

The Influence of Self-Healing Capacity of Lime Mortars on the Behaviour of Brick-Mortar Masonry Subassemblies

In this paper a methodology is proposed to investigate the influence of healing capacity of lime-based mortars in masonry specimens, by means of shear bond test. A first series of “brick-mortar” triplets – after 28 days curing in lab environment – were tested in shear, with and without transverse normal stress, to determine the shear bond strength. Then, on a second series of samples, a damage is induced by loading them to a prescribed fraction (70%) of the shear bond strength, determined as above; samples were subsequently immersed in water for 3 months and re-tested at the end of this curing period. Reference undamaged samples undergoing the same curing history as the damaged ones were tested as well. The effectiveness of the self-healing capacity has been evaluated through the recovery of shear bond strength. The reliability of this approach has been investigated also by comparing the experimental results with a simplified FE model.

Mathematical Formulation of Laminated Composite Thick Conical Shells

<span lang="EN-US">The </span><span lang="EN-US">mathematical formulation</span><span lang="EN-US">of thick conical shells using third order shear deformation of thick shell theory are presented. The equations of motion are obtained using Hamilton’s principle. For present analysis, we consider shell's system transverse normal stress, rotary inertia and shear deformation.</span>

Free vibrations and buckling analysis of laminated plates by oscillatory radial basis functions

In this paper the free vibrations and buckling analysis of laminated plates is performed using a global meshless method. A refined version of Kant’s theorie which accounts for transverse normal stress and through-the-thickness deformation is used. The innovation is the use of oscillatory radial basis functions. Numerical examples are performed and results are presented and compared to available references. Such functions proved to be an alternative to the tradicional nonoscillatory radial basis functions.