Fernando Alonso Libros

A Prudencio Pérez, alias Sito, lo que más le gusta es escribir cuentos pero, cuando termina sus años de colegio y se hace mayor, acaba trabajando de contable en una oficina. Atrás queda su viejo deseo de infancia hasta que, un día, decide convertirse en el señor Huvez, que vende barquillos y cuenta historias, sin sospechar la mala pasada que le juega su barquillera.

En la ciudad de Siburgo, alejada del mar, los jóvenes navegan gracias a una tradición misteriosa. Mar y Ramón descubren secretos en la biblioteca, incluyendo la fascinante infancia del padre de Ramón, lo que los llevará a una emocionante aventura llena de revelaciones.

The mechanical behavior of soils has been largely investigated using constitutive models. These are empirical relations based on laboratory tests of soil specimens. The investigation of soils at the grain scale using discrete element models has become possible in recent years. These models have provided valuable understanding of many micromechanical aspects of soil deformation. The aim of this work is to draw together these two approaches in the investigation of the plastic deformation of soils. A simple discrete element model has been used to evaluate the effect of anisotropy, force chains, and sliding contacts on different aspects of soil plasticity: dilatancy, failure, shear bands, ratcheting, etc. The discussion of these aspects raises two important questions: Is the incrementally nonlinear theory appropriate to describe the mechanical response of soils? And, does a purely elastic regime exist in the deformation of granular materials?