Recent Submissions

  • Novel ball head screw and screwdriver design for implant-supported prostheses with angled channels: A finite element analysis 

    Farré Berga, Oriol; Cercadillo Ibarguren, Iñaki; Sánchez Torres, Alba; Domènech Mestres, Carles (2018-12-01)
    Article
    Open Access
    The primary objective of this study was to design the optimal geometry of a novel screwdriver, create the grooves on a ball head screw, and demonstrate its resistance to a torque of up to 40 Ncm at angulations of 0°, 15°, ...
  • Link-based Performance Optimization of Spatial Mechanisms 

    Yihun, Yimesker; Bosworth, Kenneth; Pérez Gracia, Alba (2014-12)
    Article
    Restricted access - publisher's policy
    In the design of spatial linkages, the finite-position kinematics is fully specified by the position of the joint axes, i.e., a set of lines in space. However, most of the tasks have additional requirements regarding motion ...
  • Dimensional Synthesis of Wristed Binary Hands 

    Hassanzadeh, Neda; Pérez Gracia, Alba (2016-04)
    Article
    Open Access
    The kinematic synthesis applied to tree topologies is a tool for the design of multi-fingered robotic hands, for a simultaneous task of all fingertips. Even though traditionally wrists and hands have been designed separately, ...
  • A Task-based Design Methodology for Robotic Exoskeletons 

    Heidari, Omid; Wolbrecht, Eric; Pérez Gracia, Alba; Yihun, Yimesker (Sage Publications, 2018-11)
    Article
    Open Access
    This study is aimed at developing a task-based methodology for the design of robotic exoskeletons. This is in contrast to prevailing research efforts, which attempt to mimic the human limb, where each human joint is given ...
  • Mixed Position and Twist Space Synthesis of 3R Chains 

    Hassanzadeh, Neda; Pérez Gracia, Alba (MDPI AG, 2022)
    Article
    Open Access
    Mixed-position kinematic synthesis is used to not only reach a certain number of precision positions, but also impose certain instantaneous motion conditions at those positions. In the traditional approach, one end-effector ...
  • Design for the Automation of an AMBU Spur II Manual Respirator 

    Domènech Mestres, Carles; Blanco Romero, María Elena; Fuente Morató, Albert de la; Ayala Chauvin, Manuel (2021-02-21)
    Article
    Open Access
    This article shows the design of a device to automatize an Ambu Spur II manual respirator. The aim of this compassionate medicine device is to provide an emergency alternative to conventional electric respirators—which are ...
  • New matrix methodology for algorithmic transparency in assembly line balancing using a genetic algorithm 

    Anel Gracia, Juan; Català Calderon, Pau; Serra Serra, Moisès; Domenech Léga, Bruno (Elsevier, 2022-01-13)
    Article
    Open Access
    This article focuses on the Mixed-Model Assembly Line Balancing single-target problem of type 2 with single-sided linear assembly line configurations, which is common in the industrial environment of small and medium-sized ...
  • Bennet's Linkage and the Cylindroid 

    Pérez Gracia, Alba; McCarthy, John Michael (2002)
    Article
    Open Access
    Bennett’s linkage is a spatial 4R closed chain that can move with one degree of freedom. The set of relative displacement screws that form the one-dimensional workspace of this device defines a ruled surface known as a ...
  • Underwater power generator based on gravity vortex siphon boost energy transition 

    Ayala Chauvin, Manuel Ignacio; Benavides, Holger; Riba Santmartí, Genís; Blanco Romero, María Elena (2021)
    Article
    Open Access
    The need for an energy transition is nowadays undeniable. Climate change, fossil fuel depletion and economic vulnerability are some of the main drivers of the model change. Therefore, it is necessary to promote local energy ...
  • COVID-19 y la transición energética 

    Ayala Chauvin, Manuel Ignacio; Riba Santmartí, Genís (2020-05-05)
    Article
    Open Access
    La COVID-19 ha dejado en evidencia que nuestra vida cotidiana depende en una elevada proporción al acceso a la energía. Por tanto, ahora más nunca, es necesario potenciar las actividades de Km0 como la producción local de ...
  • Residual vibration reduction in back-and-forth moving systems driven by slider-crank mechanisms working through a dead point configuration 

    Veciana Fontanet, Joaquim Maria; Jordi Nebot, Lluïsa; Lores Garcia, Eduard (2021-01-13)
    Article
    Open Access
    This study proposes an algorithm to construct back-and-forth motion profiles to reduce residual vibrations of 1-dof linear oscillatory systems, driven through a transmission chain made up of a 1-dof linkage mechanism. This ...
  • Comparative study of flank cams manufactured by WEDM and willing processes 

    Buj Corral, Irene; Zayas Figueras, Enrique Ernesto; Montaña Faiget, Àngels (Multidisciplinary Digital Publishing Institute (MDPI), 2020-08-27)
    Article
    Open Access
    Cam-follower mechanisms are usually employed in different machines, like combustion engines, sewing machines, machine tools, etc. In the present paper, the option to manufacture cams utilizing wire electrical discharge ...

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