Now showing items 23-42 of 178

  • Compact travelling waves in viscoelastic solids 

    Destrade, Michel (IOP Science, 2009-09-02)
    We introduce a model for nonlinear viscoelastic solids, for which travelling shear waves with compact support are possible. Using analytical and numerical methods, we investigate the general case of this model, and an ...
  • Complexifiable characteristic classes 

    Rahm, Alexander D. (Springer, 2014-01)
    We examine the topological characteristic cohomology classes of complexified vector bundles. In particular, all the classes coming from the real vector bundles underlying the complexification are determined.
  • Complexifiable characteristic classes 

    Rahm, Alexander D. (2013)
  • Compression instabilities of tissues with localized strain softening. 

    Destrade, Michel (World Scientific Publishing Company, 2010-09-27)
    The stress-strain relationship of biological soft tissues affected by Marfan's syndrome is believed to be nonconvex. More specifically, Haughton and Merodio recently proposed a strain energy density leading to localized ...
  • Computational Selection of Transcriptomics Experiments Improves Guilt-by-Association Analyses 

    Yang, Haixuan (PLos ONE, 2012-08-07)
    The Guilt-by-Association (GBA) principle, according to which genes with similar expression profiles are functionally associated, is widely applied for functional analyses using large heterogeneous collections of transcriptomics ...
  • Creep, recovery, and waves in a nonlinear fiber-reinforced viscoelastic solid 

    Destrade, Michel (Society for Industrial and Applied Mathematics, 2007-10-10)
    We present a constitutive model capturing some of the experimentally observed features of soft biological tissues: nonlinear viscoelasticity, nonlinear elastic anisotropy, and nonlinear viscous anisotropy. For this model ...
  • Deficiencies in numerical models of anisotropic nonlinearly elastic materials 

    Ní Annaidh, Aisling; Destrade, Michel; Gilchrist, M.; Murphy, J.G. (Springer, 2013-08)
    Incompressible nonlinearly hyperelastic materials are rarely simulated in finite element numerical experiments as being perfectly incompressible because of the numerical difficulties associated with globally satisfying ...
  • Determination of friction coefficient in unconfined compression of brain tissue 

    Rashid, Badar; Destrade, Michel; Gilchrist, Michael (Elsevier, 2012-10)
    Unconfined compression tests are more convenient to perform on cylindrical samples of brain tissue than tensile tests in order to estimate mechanical properties of the brain tissue because they allow for homogeneous ...
  • Differences in tension and compression in the nonlinearly elastic bending of beams 

    Destrade, Michel (Texas Digital Library, 2009-02)
    The classical flexure problem of non-linear incompressible elasticity is revisited for elastic materials whose mechanical response is different in tension and compression - the so-called bimodular materials. The flexure ...
  • Diffusionrank: a possible penicillin for web spamming 

    Yang, Haixuan (2007)
    While the PageRank algorithm has proven to be very effective for ranking Web pages, the rank scores of Web pages can be manipulated. To handle the manipulation problem and to cast a new insight on the Web structure, we ...
  • Elastic interface acoustic waves in twinned crystals 

    Destrade, Michel (Elsevier, 2003)
    A new type of interface acoustic waves (IAW) is presented, for single-crystal orthotropic twins bonded symmetrically along a plane containing only one common crystallographic axis. The effective boundary conditions show ...
  • EndoCOM : Conception d un banc in vitro de simulation des anévrismes de l aorte abdominale 

    Destrade, Michel (2009)
    (FR) Le traitement des anévrismes de l'aorte abdominale par voie endovasculaire est aujourd'hui prédominant à plus de 65 % mais comporte encore des risques. Le suivi postopératoire devient alors crucial. Le projet de ...
  • ENDOCOM: Abdominal aortic aneurysm test bench for in vitro simulation 

    Destrade, Michel (IEEE, 2007)
    An abdominal aortic aneurysm (AAA) is a dilatation of the aorta at the abdominal level, whose rupture is a life threatening complication. Recent treatment procedures of AAA consists in endovascular treatment with covered ...
  • Exceptional Vertex Operator Algebras and the Virasoro Algebra 

    Tuite, Michael P. (2008)
    We consider exceptional vertex operator algebras for which particular Casimir vectors constructed from the primary vectors of lowest conformal weight are Virasoro descendants of the vacuum. We discuss constraints on these ...
  • Experimental characterisation of neural tissue at collision speeds 

    Destrade, Michel; Rashid, Bader; Gilchrist, Michael (International Research Council on Biomechanics of Injury (IRCOBI), 2012)
    Mechanical characterisation of brain tissue at high loading velocities is particularly important for modelling Traumatic Brain Injury (TBI). During severe impact conditions, brain tissue experiences a mixture of compression, ...
  • Explicit secular equation for Scholte waves over a monoclinic crystal 

    Destrade, Michel (Elsevier, 2004)
    Scholte waves are acoustic waves propagating at a fluid/solid interface. They are localized in the neighborhood of the phase boundary in the sense that they decay exponentially in both directions along the normal to the ...
  • The explicit secular equation for surface acoustic waves in monoclinic elastic crystals 

    Destrade, Michel (Acoustical Society of America, 2001-01-25)
    The secular equation for surface acoustic waves propagating on a monoclinic elastic half-space is derived in a direct manner, using the method of first integrals. Although the motion is at first assumed to correspond to ...
  • Explicit secular equations for piezoacoustic surface waves: Rayleigh modes 

    Destrade, Michel (American Institute of Physics, 2005-09-06)
    The existence of a two-partial Rayleigh wave coupled to an electrical field in 2 mm piezoelectric crystals is known but has rarely been investigated analytically. It turns out that the Z cut X propagation problem can be ...
  • Explicit secular equations for piezoacoustic surface waves: Shear-horizontal modes 

    Destrade, Michel (AIP Publishing, 2005-09-06)
    The existence of a two-partial Rayleigh wave coupled to an electrical field in 2 mm piezoelectric crystals is known but has rarely been investigated analytically. It turns out that the Z cut X propagation problem can be ...
  • Extreme softness of brain matter in simple shear 

    Destrade, Michel; Murphy, J.G.; Gilchrist, M.; Rashid, J.G.; Saccomandi, Giuseppe (Elsevier, 2015-03-13)
    We show that porcine brain matter can be modelled accurately as a very soft rubber-like material using the Mooney-Rivlin strain energy function, up to strains as high as 60%. This result followed from simple shear experiments ...