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    Reliable nonlinear hybrid simulation using modified operator splitting technique

    , Article Structural Control and Health Monitoring ; 2018 ; 15452255 (ISSN) Zakersalehi, M ; Tasnimi, A. A ; Ahmadizadeh, M ; Sharif University of Technology
    John Wiley and Sons Ltd  2018
    Abstract
    One of the main challenges of hybrid simulation is developing integration methods that not only provide accurate and stable results but also are compatible with the hybrid simulation circumstances. This paper presents a novel enhanced integration technique for hybrid simulation termed “modified operator splitting” (MOS) method. The main aim of the MOS technique is to improve the precision of the operator splitting (OS) method by reducing the corrector step length, where initial stiffness is utilized instead of actual stiffness. For this purpose, a new algorithm is proposed, which makes a more precise estimation of the predictor displacement; thus minimizes the effect of the corrective... 

    Reliable nonlinear hybrid simulation using modified operator splitting technique

    , Article Structural Control and Health Monitoring ; Volume 26, Issue 1 , 2019 ; 15452255 (ISSN) Zakersalehi, M ; Tasnimi, A. A ; Ahmadizadeh, M ; Sharif University of Technology
    John Wiley and Sons Ltd  2019
    Abstract
    One of the main challenges of hybrid simulation is developing integration methods that not only provide accurate and stable results but also are compatible with the hybrid simulation circumstances. This paper presents a novel enhanced integration technique for hybrid simulation termed “modified operator splitting” (MOS) method. The main aim of the MOS technique is to improve the precision of the operator splitting (OS) method by reducing the corrector step length, where initial stiffness is utilized instead of actual stiffness. For this purpose, a new algorithm is proposed, which makes a more precise estimation of the predictor displacement; thus minimizes the effect of the corrective... 

    Reliable nonlinear hybrid simulation using modified operator splitting technique

    , Article Structural Control and Health Monitoring ; Volume 26, Issue 1 , 2019 ; 15452255 (ISSN) Zakersalehi, M ; Tasnimi, A. A ; Ahmadizadeh, M ; Sharif University of Technology
    John Wiley and Sons Ltd  2019
    Abstract
    One of the main challenges of hybrid simulation is developing integration methods that not only provide accurate and stable results but also are compatible with the hybrid simulation circumstances. This paper presents a novel enhanced integration technique for hybrid simulation termed “modified operator splitting” (MOS) method. The main aim of the MOS technique is to improve the precision of the operator splitting (OS) method by reducing the corrector step length, where initial stiffness is utilized instead of actual stiffness. For this purpose, a new algorithm is proposed, which makes a more precise estimation of the predictor displacement; thus minimizes the effect of the corrective... 

    Dynamic responses of a rectangular plate under motion of an oscillator using a semi-analytical method

    , Article JVC/Journal of Vibration and Control ; Volume 17, Issue 9 , 2011 , Pages 1310-1324 ; 10775463 (ISSN) Ghafoori, E ; Kargarnovin, M. H ; Ghahremani, A. R ; Sharif University of Technology
    Abstract
    A semi-analytical method is presented to calculate the dynamic responses of a rectangular plate due to a moving oscillator. In previous analytical solutions of the moving oscillator problem, the elastic distributed structure has usually been modeled by an elastic beam structure. This restrictive assumption is removed in this study by assuming a general plate as two-dimensional elastic distributed structure. The method can be applied for any arbitrary path on the plate. A combination of the Fourier and Laplace transformation as well as the convolution theorem is used to solve the governing differential equations of the problem. A modified integration technique is then presented to solve the... 

    Carbon nanotubes in microfluidic lab-on-a-chip technology: current trends and future perspectives

    , Article Microfluidics and Nanofluidics ; Volume 21, Issue 9 , 2017 ; 16134982 (ISSN) Ghasemi, A ; Amiri, H ; Zare, H ; Masroor, M ; Hasanzadeh, A ; Beyzavi, A ; Aref, A. R ; Karimi, M ; Hamblin, M. R ; Sharif University of Technology
    Abstract
    Advanced nanomaterials such as carbon nanotubes (CNTs) display unprecedented properties such as strength, electrical conductance, thermal stability, and intriguing optical properties. These properties of CNT allow construction of small microfluidic devices leading to miniaturization of analyses previously conducted on a laboratory bench. With dimensions of only millimeters to a few square centimeters, these devices are called lab-on-a-chip (LOC). A LOC device requires a multidisciplinary contribution from different fields and offers automation, portability, and high-throughput screening along with a significant reduction in reagent consumption. Today, CNT can play a vital role in many parts...