User login

You are here

Flavio Stochino's blog

Flavio Stochino's picture

A simplified model for railway catenary wire dynamics

In this paper, a simplified analytic model for the dynamic behaviour of railway catenary wire is presented. The model is discussed and validated with the help of numerical results obtained by a finite element code, for the case of a typical Italian railway installation. The simplified model is convenient from the computational point of view and is useful for sensitivity analysis. Some parametric studies have been developed by considering as free parameters the velocity and the distance of the train pantographs and looking at their effect on catenary dynamics.

Flavio Stochino's picture

Mixed assumed-strain finite element model for laminates

Fibre-reinforced plates and shells are finding an increasing interest in engineering applications; in most cases dynamic phenomena need to be taken into account. Consequently, effective and robust computational tools are sought in order to provide reliable results for the analysis of such structural models. In this paper the mixed assumed-strain laminated plate element, previously used for static analyses, has been extended to the dynamic realm. This model is derived within the framework of the so-called First-order Shear Deformation Theory (FSDT).

Flavio Stochino's picture

RC beams under blast load: Reliability and sensitivity analysis

The effects of blast loading on structures can be very dangerous: damages and failures are expected with serious threats to structural safety and human life. Materials stresses and strains are often pushed to the limit and the modelling of these phenomena can be very complex. In order to design blast-resistant structures it is very important to determine what are the key parameters of this problem.


Flavio Stochino's picture

Sardinia radio telescope finite element model updating by means of photogrammetric measurements

 The 64 m diameter Sardinia Radio Telescope (SRT), located near Cagliari (Italy), is the world’s second largest fully steerable radio telescope with an active surface. Among its peculiarities is the capability of modifying the configuration of the primary mirror surface by means of electromechanical actuators. This capability enables, within a fixed range, balancing of the deformation caused by external loads.

Flavio Stochino's picture


The current development of the isogeometric approach in various fields of mechanics is explained by the high-accuracy results which can be achieved at a reduced computational cost by codes based on non-uniform rational B-splines (NURBS). In the case of strongly curved beams the simple diagonal de Saint-Venant’s constitutive model can lead to significant errors as it has been reported in the classic literature. Other models such as Winkler’s have been proposed and seem more suitable for these kinds of structures.

Flavio Stochino's picture

What is the importance of strain rate on structural response under blast load?

What is the importance of strain rate on structural response under blast load?

This and other issues are discussed in the recent paper from Stochino F. and Carta G.:

“SDOF models for reinforced concrete beams under impulsive loads accounting for strain rate effects”, DOI: 10.1016/j.nucengdes.2014.05.022, Nuclear Engineering and Design 276, (2014), 74-86.

Flavio Stochino's picture

Theoretical models to predict the flexural failure of reinforced concrete beams under blast loads

The paper by Carta G. and Stochino F. presents two alternative approaches for the study of reinforced concrete beams under blast loads. In the first approach, the beam is modeled by means of Euler–Bernoulli’s theory and its elastic–plastic behavior is expressed through a new nonlinear relationship between bending moment and curvature. In the second approach, instead, the beam is idealized as a single degree of freedom system.

Flavio Stochino's picture

Experimental Results: RC beams under blast load

Good morning,

I'm looking for some field results concerning blast load on RC beams. In particular I'm interested in the time history of pressure and deflection. Does anybody know any publication dealing with this topic?

Thanks for your kind attention. 

Subscribe to RSS - Flavio Stochino's blog

More comments


Subscribe to Syndicate