École Centrale de Nantes

Antichains for Concurrent Parameterized Games

Concurrent parameterized games involve a fixed yet arbitrary number of players. They are described by finite arenas in which the edges are labeled with languages that describe the possible move combinations leading from one vertex to another (n players yield a word of length n)....

Design and stability analysis of an underactuated hand with passively rotating fingers

Abstract This paper presents an innovative design and stability analysis of an underactuated robotic finger with spatial mobility, designed to enhance gripping dexterity in robotic hands. The finger architecture incorporates a revolute joint at its base, enabling passive spatial...

ALE-based finite element modeling of needle-punching using embedded 1D yarns in a 3D preform

Needle-punching is widely used to introduce through-thickness reinforcement into fibrous preforms for composite materials. During the process, barbed needles repeatedly penetrate stacked layers and transfer fibers from the in-plane directions toward the thickness direction, progr...

Modeling Large‐Deformation Geotechnical Problems in Granular Soils: Integrating a Micromechanics‐Based Model With the Explicit Finite Element Method

ABSTRACT Large‐deformation problems in granular soils are of central importance in geotechnical engineering, as they govern the performance of foundations, retaining structures, and earthworks under extreme loading conditions. Reliable prediction of such phenomena remains challen...

Oozing characteristics in screw extrusion additive manufacturing

Abstract Additive Manufacturing (AM) is a non-conventional manufacturing process that enables the physical realization of components through layer-by-layer material deposition. Among the different AM techniques, Screw Extrusion Additive Manufacturing (SEAM) uses an extruder screw...

Equivalence of Power Reduction and Fuel Savings in Wind-Assisted Ships

Abstract This paper investigates the relationship between propulsion power reduction and fuel savings in wind-assisted ships, focusing on hybrid machinery configurations where propulsion and electrical power generation are coupled. A modelling framework is developed to quantify t...