Ismael García García

Universidad de Valladolid | UVA

The present piece of research studies partial sleeve joints between similar rectangular tubes, involving bolts under shear as joining means. These are connections between two rectangular hollow sections that can be fitted one in another just by adequately cutting some faces and then bolting. For these elements, the use of self‐drilling screws is ev...

The design of removable beam‐column joints between open structural steel beams and rectangular hollow section (RHS) columns is not easy because of the inaccessibility to the tube interior from outside. I‐beam to RHS‐column joints with threaded welded studs are of great interest due to their low‐cost assembling technique and easy on‐site execution....

Statement of problem The design of the implant-abutment connection has been widely researched, but the impact of different crown-abutment geometries remains unclear. Purpose The purpose of this in vitro study was to evaluate the effect of different crown-abutment margin geometries on the mechanical behavior and fit of screw-retained implant-suppor...

This paper presents the results of an extensive experimental investigation on the behaviour of a new type of joint between open structural steel beam and rectangular hollow section (RHS) column. The proposed joint is demountable: threaded studs are welded to the front face of the hollow section column and angle cleat legs are then bolted to the col...

The use of Rectangular Hollow Sections (RHS) as columns in steel construction includes important advantages like higher mechanical strength and fire resistance. However, the practical demountable bolted joints between beams and columns are not easy to execute, due to impossibility of access to the inner part of the tube. The use of threaded studs w...

Mechanical complications in implant-supported fixed dental prostheses are often related to implant and prosthetic design. Although the current ISO 14801 provides a framework for the evaluation of dental implant mechanical reliability, strict adherence to it may be difficult to achieve due to the large number of test specimens which it requires as w...

Resumen: En el cálculo de vigas y placas de vidrio laminado el vidrio se suele considerar como un material con propiedades elástico-lineales, mientras que los materiales poliméricos que conforman el laminado presentan un comportamiento viscoelástico. Como consecuencia, el comportamiento mecánico del vidrio laminado depende del tiempo y de la temper...

Several structures are completely or partially manufactured in a factory and then transported to the final situation where they are going to be located. An accurate methodology to check the serviceability of the structure in the factory, previously to the transportation and final assembly, will diminish significantly the costs of validation of its...

Laminated glass is a sandwich element that consists of two or more sheets of monolithic glass with one or more interlayers of a polymer that usually show viscoelastic behavior. In recent years, the concept of effective thickness has been proposed to calculate displacements and stresses in laminated glass elements subject to static loadings. The met...

Stability of laminated structural glass is one of the design requirements to be considered due to the brittle and slender nature of this kind of glass elements. Since laminated glass is mainly manufacture with viscoelastic interlayers, its mechanical properties are temperature and time dependent. This implies that, i.e., the critical load of a lami...

Structural stability is one of the design requirements in laminated-glass beams and plates due their slenderness and brittleness. In this paper the equations of the classical Euler theory for buckling of isotropic monolithic beams are extended to laminated-glass beams using the effective thickness and the effective Young modulus concepts. It is dem...

Finite element models for estimating stresses and displacements in laminated glass elements under dynamic loadings are very time-consuming because (1) many small 3D elements are needed to model accurately all the layers of the sandwich element and (2) the core usually shows a time and temperature dependent behaviour. In the last years, the concept...

Operational modal analysis (OMA) is nowadays widely used to identify the modal parameters in civil, mechanical and aerospace structures. In OMA the forces are not measured, i.e., only the responses of the structure are used in the modal identification and therefore the mode shapes cannot be mass normalized. In the last years, the mass change method...

En los últimos años, el uso de vidrio laminado como elemento estructural se ha incrementado considerablemente en construcciones arquitectónicas, sobre todo en fachadas, cubiertas, escaleras o ventanas de seguridad. El cálculo de estos elementos tipo sándwich no es sencillo debido a la combinación de las propiedades mecánicas del vidrio (elástico-li...