Now showing items 1-13 of 13

  • Cell-based maximum-entropy approximants 

    Millán, Daniel; Sukumar, N; Arroyo Balaguer, Marino (2015-02-01)
    Article
    Open Access
    In this paper, we devise cell-based maximum-entropy (max-ent) basis functions that are used in a Galerkin method for the solution of partial differential equations. The motivation behind this work is the construction of ...
  • Computational evaluation of the flexoelectric effect in dielectric solids 

    Abdollahi Hosnijeh, Amir; Peco Regales, Christian; Millán, Daniel; Arroyo Balaguer, Marino; Arias Vicente, Irene (American Institute of Physics (AIP), 2014-09-07)
    Article
    Restricted access - publisher's policy
    Flexoelectricity is a size-dependent electromechanical mechanism coupling polarization and strain gradient. It exists in a wide variety of materials, and is most noticeable for nanoscale objects, where strain gradients are ...
  • Formulation and characterization of mucoadhesive controlled release matrix tablets of captopril 

    Saurí, J.; Zachariah, Manesh; Macovez, Roberto; Tamarit Mur, José Luis; Millán, Daniel; Suñé Pou, M.; García Montoya, E.; Pérez Lozano, P.; Miñarro, M.; Ticó, J. R.; Suñé Negr, J. M. (2017-12-01)
    Article
    Open Access
    The purpose of this study is to characterize controlled release matrix tablets of captopril and to find out the physicochemical properties that have an effect on the mucoadhesion process. The hydrophilic matrix tablets ...
  • Fourth order phase-field model for local max-ent approximants applied to crack propagation 

    Amiri, Fatemeh; Millán, Daniel; Arroyo Balaguer, Marino; Silani, Mohammad; Rabczuk, Timon (2016-12)
    Article
    Open Access
    We apply a fourth order phase-field model for fracture based on local maximum entropy (LME) approximants. The higher order continuity of the meshfree LME approximants allows to directly solve the fourth order phase-field ...
  • Fracture toughening and toughness asymmetry induced by flexoelectricity 

    Abdollahi Hosnijeh, Amir; Peco, Christian; Millán, Daniel; Arroyo Balaguer, Marino; Catalan, Gustau; Arias Vicente, Irene (2015-09-08)
    Article
    Restricted access - publisher's policy
    Cracks generate the largest strain gradients that any material can withstand. Flexoelectricity (coupling between strain gradient and polarization) must therefore play an important role in fracture physics. Here we use a ...
  • Hybrid cell centred/vertex model for cellular nanolayers 

    Mosaffa, Payman; Asadipour, Nina; Millán, Daniel; Rodríguez Ferran, Antonio; Muñoz Romero, José (2015)
    Conference report
    Open Access
    Macroscopic deformations in embryonic soft tissues are due to the intra-cellular remodelling and cell intercalation. We here present a computational approach that can handle the two types of deformations, and also take ...
  • Modelling fluid deformable surfaces with an emphasis on biological interfaces 

    Torres Sánchez, Alejandro; Millán, Daniel; Arroyo Balaguer, Marino (2019-08-10)
    Article
    Restricted access - publisher's policy
    Fluid deformable surfaces are ubiquitous in cell and tissue biology, including lipid bilayers, the actomyosin cortex or epithelial cell sheets. These interfaces exhibit a complex interplay between elasticity, low Reynolds ...
  • Nonlinear manifold learning for model reduction in finite elastodynamics 

    Millán, Daniel; Arroyo Balaguer, Marino (2013)
    Article
    Open Access
    Model reduction in computational mechanics is generally addressed with linear dimensionality reduction methods such as Principal Components Analysis (PCA). Hypothesizing that in many applications of interest the essential ...
  • On the optimum support size in meshfree methods: a variational adaptivity approach with maximum-entropy approximants 

    Rosolen, Adrián; Millán, Daniel; Arroyo Balaguer, Marino (Wiley and Sons, 2010)
    Article
    Open Access
    We present a method for the automatic adaption of the support size of meshfree basis functions in the context of the numerical approximation of boundary value problems stemming from a minimum principle. The method is based ...
  • Phase-field modeling and simulation of fracture in brittle materials with strongly anisotropic surface energy 

    Li, Bin; Peco, Christian; Millán, Daniel; Arias Vicente, Irene; Arroyo Balaguer, Marino (John Wiley & Sons, 2015-04-20)
    Article
    Open Access
    Crack propagation in brittle materials with anisotropic surface energy is important in applications involving single crystals, extruded polymers, or geological and organic materials. Furthermore, when this anisotropy is ...
  • Phase-field modeling of fracture in linear thin shells 

    Amiri, Fatemeh; Millán, Daniel; Shen, Yongxing; Rabczuk, Timon; Arroyo Balaguer, Marino (2014-02)
    Article
    Open Access
    We present a phase-field model for fracture in Kirchoff-Love thin shells using the local maximum-entropy (LME) meshfree method. Since the crack is a natural outcome of the analysis it does not require an explicit representation ...
  • Point-set manifold processing for computational mechanics: thin shells, reduced order modeling, cell motility and molecular conformations 

    Millán, Daniel (Universitat Politècnica de Catalunya, 2012-11-12)
    Doctoral thesis
    Open Access
    In many applications, one would like to perform calculations on smooth manifolds of dimension d embedded in a high-dimensional space of dimension D. Often, a continuous description of such manifold is not known, and instead ...
  • Revisiting pyramid compression to quantify flexoelectricity: a three-dimensional simulation study 

    Abdollahi Hosnijeh, Amir; Millán, Daniel; Peco, Christian; Arroyo Balaguer, Marino; Arias Vicente, Irene (2015-03-03)
    Article
    Open Access
    Flexoelectricity is a universal property of all dielectrics by which they generate a voltage in response to an inhomogeneous deformation. One of the controversial issues in this field concerns the magnitude of flexoelectric ...