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    On thermomechanical stress analysis of adhesively bonded composite joints in presence of an interfacial void

    , Article Composite Structures ; Volume 130 , October , 2015 , Pages 116-123 ; 02638223 (ISSN) Tahani, M ; Yousefsani, S. A ; Sharif University of Technology
    Elsevier Ltd  2015
    This paper deals with analytical thermomechanical stress analysis of adhesively bonded composite joints in presence of a structural imperfection in the form of an interfacial void within the adhesive layer based on the full layerwise theory (FLWT). The joints are subjected to mechanical tension, uniform temperature change, or steady-state heat conduction. The proposed adhesive joint is divided into three distinct regions along its length and a large number of mathematical plies through its thickness. Three sets of fully coupled governing equilibrium equations are derived employing the principle of minimum total potential energy. The three-dimensional nonlinear interlaminar stress... 

    A fresh insight into Kane's equations of motion

    , Article Robotica ; 2015 ; 02635747 (ISSN) Pishkenari, H. N ; Yousefsani, S. A ; Gaskarimahalle, A. L ; Oskouei, S. B. G ; Sharif University of Technology
    Cambridge University Press  2015
    With rapid development of methods for dynamic systems modeling, those with less computation effort are becoming increasingly attractive for different applications. This paper introduces a new form of Kane's equations expressed in the matrix notation. The proposed form can efficiently lead to equations of motion of multi-body dynamic systems particularly those exposed to large number of nonholonomic constraints. This approach can be used in a recursive manner resulting in governing equations with considerably less computational operations. In addition to classic equations of motion, an efficient matrix form of impulse Kane formulations is derived for systems exposed to impulsive forces....