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    Extended finite element method for three-dimensional large plasticity deformations on arbitrary interfaces

    , Article Computer Methods in Applied Mechanics and Engineering ; Volume 197, Issue 9-12 , 2008 , Pages 1100-1114 ; 00457825 (ISSN) Khoei, A. R ; Biabanaki, S. O. R ; Anahid, M ; Sharif University of Technology
    2008
    Abstract
    In this paper, the extended finite element method is presented for large elasto-plastic deformation in 3D solid mechanics problems. The X-FEM computational algorithm is presented in the framework of Lagrangian description in order to model the arbitrary interfaces in large deformations. In X-FEM, the material interface is represented independently of element boundaries and the process is accomplished by partitioning the domain with several tetrahedral sub-elements whose Gauss points are used for integration of the domain of elements. The interface between two bodies is modeled by using the X-FEM technique and applying a modified level set enrichment function. In order to simulate the... 

    Numerical modeling of large deformation frictional contact with the extended finite element method

    , Article 9th International Conference on Computational Plasticity: Fundamentals and Applications, COMPLAS IX, Barcelona, 5 September 2007 through 7 September 2007 ; Issue PART 2 , 2007 , Pages 752-755 ; 9788496736290 (ISBN) Anahid, M ; Yadegaran, I ; Khoei, A. R ; Sharif University of Technology
    2007
    Abstract
    In this paper, the extended finite element method is employed to model discontinuities caused by frictional contact. The method is used in modeling discontinuity within a standard finite element framework. In XFEM technique, the special functions are included in standard FE method to simulate discontinuity without considering the boundary conditions in meshing the domain. In this study, the classical finite element approximation is enriched by applying additional terms to simulate the frictional behavior of contact between two bodies. The partition of unity method is applied to discretize the contact area with triangular sub-elements whose Gauss points are used for integration of the domain... 

    Extended finite element modeling of large elasto-plastic deformations on arbitrary interfaces

    , Article 9th International Conference on Technology of Plasticity, ICTP 2008, Gyeongju, 7 September 2008 through 11 September 2008 ; 2008 , Pages 2189-2194 Khoei, A. R ; Biabanaki, S. O. R ; Anahid, M ; Sharif University of Technology
    Hanrimwon Publishing Co  2008
    Abstract
    In this paper, the extended finite element method is presented for large elasto-plastic deformation of continuum problems. The X-FEM computational algorithm is presented in the framework of Lagrangian description in order to model the arbitrary interfaces in large deformations. In X-FEM, the material interface is represented independently of element boundaries and the process is accomplished by partitioning the domain with several tetrahedral sub-elements whose Gauss points are used for integration of the domain of elements. The interface between two bodies is modeled by using the X-FEM technique and applying a modified level set enrichment function. In order to simulate the nonlinear... 

    3D modeling of large elasto-plastic deformation via the extended finite element method

    , Article 9th International Conference on Computational Plasticity: Fundamentals and Applications, COMPLAS IX, Barcelona, 5 September 2007 through 7 September 2007 ; Issue PART 2 , 2007 , Pages 894-897 ; 9788496736290 (ISBN) Khoei, A. R ; Biabanaki, S. O. R ; Anahid, M ; Sharif University of Technology
    2007
    Abstract
    In this paper, the extended finite element method is presented for large elasto-plastic deformation in 3D solid mechanics problems. The X-FEM computational algorithm is presented in the framework of Lagrangian description in order to model the arbitrary discontinuities in large deformations. The discontinuity between two bodies is modeled by using the X-FEM technique and applying a modified level set enrichment function. In order to simulate the nonlinear behavior of materials, the Lagrangian plasticity formulation is coupled with the X-FEM technique. Finally, numerical example is analyzed to demonstrate the efficiency of the X-FEM technique in large plasticity deformations. © CIMNE 2007  

    Margination and adhesion of micro- and nanoparticles in the coronary circulation: a step towards optimised drug carrier design

    , Article Biomechanics and Modeling in Mechanobiology ; 2017 , Pages 1-17 ; 16177959 (ISSN) Forouzandehmehr, M ; Shamloo, A ; Sharif University of Technology
    Abstract
    Obstruction of left anterior descending artery (LAD) due to the thrombosis or atherosclerotic plaques is the leading cause of death worldwide. Targeted delivery of drugs through micro- and nanoparticles is a very promising approach for developing new strategies in clot-busting or treating restenosis. In this work, we modelled the blood flow characteristics in a patient-specific reconstructed LAD artery by the fluid–solid interaction method and based on physiological boundary conditions. Next, we provided a Lagrangian description of micro- and nanoparticles dynamics in the blood flow considering their Brownian motion and the particle–particle interactions. Our results state that the number of... 

    Margination and adhesion of micro- and nanoparticles in the coronary circulation: A step towards optimised drug carrier design

    , Article Biomechanics and Modeling in Mechanobiology ; Volume 17, Issue 1 , 2018 , Pages 205-221 ; 16177959 (ISSN) Forouzandehmehr, M ; Shamloo, A ; Sharif University of Technology
    Springer Verlag  2018
    Abstract
    Obstruction of left anterior descending artery (LAD) due to the thrombosis or atherosclerotic plaques is the leading cause of death worldwide. Targeted delivery of drugs through micro- and nanoparticles is a very promising approach for developing new strategies in clot-busting or treating restenosis. In this work, we modelled the blood flow characteristics in a patient-specific reconstructed LAD artery by the fluid–solid interaction method and based on physiological boundary conditions. Next, we provided a Lagrangian description of micro- and nanoparticles dynamics in the blood flow considering their Brownian motion and the particle–particle interactions. Our results state that the number of...