Search
Now showing items 171-180 of 284
Blisk blades manufacturing technologies analysis
(Elsevier, 2020-03-09)
The paper presents blisk blades manufactured by different manufacturing processes. In this sense, different milling trajectories are presented, and, super abrasive machining strategies and EDM technologies are also tested. ...
On the influence of conformity on wheel–rail rolling contact mechanics
(Elsevier, 2016-07)
The aim of this work is to assess the effects of conformity on local contact related quantities at the wheel–rail interface such as traction distributions, subsurface stresses and frictional work distributions.
For this ...
On the non-proportionality between wheel/rail contact forces and speed during wheelset passage over specific welds
(Elsevier, 2018-01)
This study investigates the influence on the wheel-rail contact forces of the running speed and the shape and position of weld defects along the track. For this purpose, a vertical dynamic model in the space domain is used. ...
A contact mechanics study of 3D frictional conformal contact
(Elsevier, 2018-03)
A contact mechanics study of three-dimensional conformal contact with friction is presented, based on numerical calculations with Finite Element models and an extension of Kalker's exact contact theory which takes into ...
Dynamic comparison of different types of slab tracks and ballasted track using a flexible track model
(Sage Publications, 2011-11)
The dynamic performance of a ballasted track and three types of slab tracks is analysed and compared by means of a comprehensive dynamic model of the train-track system, generated using two commercial analysis software ...
Erresistentzia moderatuko ohiko aplikazioetan altzairu zuntzez indarturiko hormigoi autotrinkotzaliearen erabileraren optimizazio
(2013-12-11)
Doktore Tesi honen helburua altzairu zuntz laburren egitura-ahalmenak planteatzean datza hormigoi matrizearen indartze gisa, arrunki AZIH deitua, baldintza zehatzetan materialaren zenbait alderdi hobetzen dituzten propietate ...
Optimización del Uso de Hormigones Autocompactantes Reforzados con Fibras de Acero en Aplicaciones Convencionales de Resistencias Moderadas
(2013-12-11)
El objetivo de la presente tesis doctoral, se centra en plantear las posibilidades estructurales de fibras cortas de acero como refuerzo de la matriz de hormigón, habitualmente denominado HRFA, junto con la posibilidad de ...
Identification of Key Performance Indicators in Project-Based Organisations through the Lean Approach
(MDPI, 2020-07-24)
For the time being, companies and organisations are being forced to compete in utterly complex and globalised environments, facing massive natural, economic, and technological challenges on a daily basis. Addressing these ...
Advanced Manufacturing Centres, Practical Model to Boost Technology Transfer in Manufacturing
(MDPI, 2019-09)
Establishing collaboration strategies with interdisciplinary networks in research is a crucial success factor for the companies in any sector, especially in manufacturing for aeronautics. In the aeronautical supply chain, ...
Statistical Approach for the Design of Structural Self-Compacting Concrete with Fine Recycled Concrete Aggregate
(MDPI, 2020-12-09)
The compressive strength of recycled concrete is acknowledged to be largely conditioned by the incorporation ratio of Recycled Concrete Aggregate (RCA), although that ratio needs to be carefully assessed to optimize the ...