Loading...
Search for: moving-interface
0.005 seconds

    On the inability of the moving interface model to predict isothermal solidification time during transient liquid phase (TLP) bonding of ni-based superalloys

    , Article Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science ; Volume 53, Issue 1 , 2022 , Pages 126-135 ; 10735623 (ISSN) Pouranvari, M ; Ghasemi, A ; Salmasi, A ; Sharif University of Technology
    Springer  2022
    Abstract
    Understanding diffusion-induced isothermal solidification time during transient liquid phase bonding is vital in producing intermetallic-free robust joints. The isothermal solidification completion time is overestimated by the existing analytical models, even by the closest one to the real bonding conditions, known as the moving interface model. It was found that the boride formation in the diffusion affected zone of Ni-based superalloy upon using B-containing filler metals is one of the reasons behind the inability of the moving interface model to predict the isothermal solidification completion time accurately, which has received scant attention in the literature. Moreover, simplified... 

    Modeling of moving boundaries in large plasticity deformations via an enriched arbitrary Lagrangian-Eulerian FE method

    , Article Scientia Iranica ; Volume 17, Issue 2 A , 2010 , Pages 141-160 ; 10263098 (ISSN) Anahid, M ; Khoei, A. R ; Sharif University of Technology
    2010
    Abstract
    In this paper, a new computational technique is presented for the modeling of moving boundaries in large plastic deformations based on an enriched arbitrary Lagrangian-Eulerian finite element method. An Arbitrary Lagrangian-Eulerian (ALE) technique is employed to capture the advantages of both Lagrangian and Eulerian methods and alleviate the drawbacks of mesh distortion in Lagrangian formulation. An enriched finite element method is implemented based on the extended FEM technique to capture the arbitrary interfaces independent of element boundaries. The process is accomplished by performing a splitting operator to separate the material (Lagrangian) phase from the convective (Eulerian)...