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  • Open Access


    Spreading of a Multicomponent Drop in Water: Solutions and Suspensions

    Andrey Y. Ilinykh*

    FDMP-Fluid Dynamics & Materials Processing, Vol.16, No.4, pp. 723-735, 2020, DOI:10.32604/fdmp.2020.08987

    Abstract The distribution of material resulting from the impact of a freely falling drop with a target liquid has been studied by photo and video registration methods. Different cases have been investigated by considering drops made of aqueous solutions (ink, salt, acid) and including fine solid particles (i.e., suspensions). New features have been observed in terms of flow dynamics and thin components produced as a result of the impact (such as banded elements, ligaments, and vortices at the surface of the liquid). In particular, the characteristics of emerging netlike structures have been found to depend on the size of the suspension… More >

  • Open Access


    An Anisotropic Damage Model for the Evaluation of Load Carrying Capacity of Composite Artificial Ligaments

    P. Vena1, R. Contro

    CMES-Computer Modeling in Engineering & Sciences, Vol.4, No.3&4, pp. 497-506, 2003, DOI:10.3970/cmes.2003.004.497

    Abstract The adoption of artificial ligaments in current surgery is still characterised by a low success rate due to the fact that mechanical properties of the biomedical devices are such that a biomechanical compatibility is not fully satisfied. A durable artificial ligament should exhibit stiffness as well as strength properties which are such that a full articulation functionality is guaranteed. To this purpose, reliable numerical methods able to predict the mechanical behaviour of such devices both in the elastic and in inelastic range until complete rupture, could be used for designing of devices with tailored mechanical properties.

    The present… More >

  • Open Access


    Biological Growth and Remodeling: A Uniaxial Example with Possible Application to Tendons and Ligaments

    I. J. Rao1, J.D. Humphrey2, K.R. Rajagopal3

    CMES-Computer Modeling in Engineering & Sciences, Vol.4, No.3&4, pp. 439-456, 2003, DOI:10.3970/cmes.2003.004.439

    Abstract Recent discoveries in molecular and cell biology reveal that many cell types sense and respond (via altered gene expression) to changes in their mechanical environment. Such mechanotransduction mechanisms are responsible for many changes in structure and function, including the growth and remodeling process. To understand better, and ultimately to use (e.g., in tissue engineering), biological growth and remodeling, there is a need for mathematical models that have predictive and not just descriptive capability. In contrast to prior models based on reaction-diffusion equations or the concept of volumetric growth, we examine here a newly proposed constrained mixture model for growth and… More >

  • Open Access


    On the Influence of Mechanical Behavior of the Middle Ear Ligaments: a Finite Element Analysis

    Fernanda Gentil1, Renato Natal Jorge2, António Joaquim Mendes Ferreira3, Marco Parente4, Pedro Martins5, Eurico de Almeida6

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.9, No.1, pp. 45-56, 2009, DOI:10.3970/icces.2009.009.045

    Abstract The interest in finite element method (FEM) concerning biomechanics has been increasing, in particular, to analyze the mechanical behavior of the human ear. In this work, a finite element model of the middle ear was made. A dynamic study based on a structural response to harmonic vibrations, for different sound pressure levels, applied on the eardrum, is presented using the ABAQUS program. The model includes different ligaments and muscle tendons with elastic and hyperelastic behavior of these supportive structure. The non-linear behavior of the ligaments and muscle tendons was considered, being the connection between ossicles done by contact formulation. Harmonic… More >

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