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    Article

    The computational modeling for the static analysis of axially functionally graded micro-cylindrical imperfect beam applying the computer simulation

    In this paper, the bending and buckling analysis of microbeam with the uniform and non-uniform cylindrical cross-section was examined based on the classical beam theory and the modified couple stress theory to...

    Fengxia Hou, Shengbin Wu, Zohre Moradi, Navvab Shafiei in Engineering with Computers (2022)

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    Article

    Computer simulation via a couple of homotopy perturbation methods and the generalized differential quadrature method for nonlinear vibration of functionally graded non-uniform micro-tube

    In this paper, to improve the vibrational response of microstructures, the impact of the nonlinear modal analysis of axially functionally graded (AFG) truncated conical micro-scale tube including the thermal l...

    ** Huang, Yemao Zhang, Zohre Moradi, Navvab Shafiei in Engineering with Computers (2022)

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    Article

    Nonlinear vibration and buckling of functionally graded porous nanoscaled beams

    Although many researchers have studied the vibration and buckling behavior of porous materials, the behavior of porous nanobeams is still a needed issue to be studied. This paper is focused on the buckling and...

    Seyed Sajad Mirjavadi in Journal of the Brazilian Society of Mechan… (2018)

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    Article

    On size-dependent thermal buckling and free vibration of circular FG Microplates in thermal environments

    In this article, transverse vibration and thermal buckling of a size-dependent functionally graded (FG) circular microplate has been investigated based on modified couple stress and classical plate theory for ...

    Majid Ghadiri, Mohammad Mahinzare, Navvab Shafiei in Microsystem Technologies (2017)

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    Article

    Influence of size effect on flapwise vibration behavior of rotary microbeam and its analysis through spectral meshless radial point interpolation

    In this paper, by utilizing the modified couple stress theory, influence of size effect on flapwise vibration behavior of rotary microbeam is analyzed based on Bernoulli–Euler beam model. It should be mentione...

    Elyas Shivanian, Majid Ghadiri, Navvab Shafiei in Applied Physics A (2017)

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    Article

    On size-dependent free vibration and thermal buckling of axially functionally graded nanobeams in thermal environment

    This article aims to study the buckling and free vibrational behavior of axially functionally graded (AFG) nanobeam under thermal effect for the first time. The temperature is considered to be constant and var...

    Seyed Sajad Mirjavadi, Samira Rabby, Navvab Shafiei in Applied Physics A (2017)

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    Article

    Influence of surface effects on vibration behavior of a rotary functionally graded nanobeam based on Eringen’s nonlocal elasticity

    This article presents a free vibration analysis of size-dependent functionally graded rotating nanobeams with all surface effects considerations on the basis of the nonlocal continuum model. By using constitut...

    Majid Ghadiri, Navvab Shafiei, Hamed Safarpour in Microsystem Technologies (2017)

  8. Article

    Erratum to: Thermo-mechanical vibration of rotating axially functionally graded nonlocal Timoshenko beam

    Majid Azimi, Seyed Sajad Mirjavadi, Navvab Shafiei, A. M. S. Hamouda in Applied Physics A (2017)

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    Article

    Thermo-mechanical vibration of rotating axially functionally graded nonlocal Timoshenko beam

    The free vibration analysis of rotating axially functionally graded nanobeams under an in-plane nonlinear thermal loading is provided for the first time in this paper. The formulations are based on Timoshenko ...

    Majid Azimi, Seyed Sajad Mirjavadi, Navvab Shafiei, A. M. S. Hamouda in Applied Physics A (2016)

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    Article

    Nonlinear bending vibration of a rotating nanobeam based on nonlocal Eringen’s theory using differential quadrature method

    This study investigates the small scale effect on the nonlinear bending vibration of a rotating cantilever and propped cantilever nanobeam. The nanobeam is modeled as an Euler–Bernoulli beam theory with von Ká...

    Majid Ghadiri, Navvab Shafiei in Microsystem Technologies (2016)

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    Article

    Vibration analysis of a rotating functionally graded tapered microbeam based on the modified couple stress theory by DQEM

    Due to having difficulty in solving governing nonlinear differential equations of a non-uniform microbeam, a few numbers of authors have studied such fields. In the present study, for the first time, the size-...

    Majid Ghadiri, Navvab Shafiei, S. Alireza Mousavi in Applied Physics A (2016)

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    Article

    Nonlinear vibration behavior of a rotating nanobeam under thermal stress using Eringen’s nonlocal elasticity and DQM

    This study is concerned with the small-scale effect on the nonlinear flapwise bending vibration of rotating cantilever and propped cantilever nanobeams. Euler–Bernoulli beam theory is used to model the nanobea...

    Navvab Shafiei, Mohammad Kazemi, Majid Ghadiri in Applied Physics A (2016)

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    Article

    Influence of thermal and surface effects on vibration behavior of nonlocal rotating Timoshenko nanobeam

    This paper is proposed to study the free vibration of a rotating Timoshenko nanobeam based on the nonlocal theory considering thermal and surface elasticity effects. The governing equations and the related bou...

    Majid Ghadiri, Navvab Shafiei, Amir Akbarshahi in Applied Physics A (2016)

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    Article

    Investigation of the dental implant geometry effect on stress distribution at dental implant–bone interface

    In this paper, the effect of the geometry of the implant on the stress distribution at the dental implant–bone interface is investigated. For this purpose, three-dimensional finite element model of jaw bone an...

    Majid Ghadiri, Navvab Shafiei in Journal of the Brazilian Society of Mechan… (2016)