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International Journal for Multiscale Computational Engineering

Publicou 6 edições por ano

ISSN Imprimir: 1543-1649

ISSN On-line: 1940-4352

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.4 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.3 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 2.2 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00034 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.46 SJR: 0.333 SNIP: 0.606 CiteScore™:: 3.1 H-Index: 31

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BUCKLING ANALYSIS OF RECTANGULAR FLEXURAL MICROPLATES USING HIGHER CONTINUITY P-VERSION FINITE-ELEMENT METHOD

Volume 10, Edição 3, 2012, pp. 249-259
DOI: 10.1615/IntJMultCompEng.2012002511
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RESUMO

In this article, elastic buckling of rectangular flexural micro plates (FMPs), using a higher continuity p-version finite-element framework based on Galerkin formulation, is investigated. The invariant form of governing equation for microplates with nonlocal effects based on "modified couple stress theory" is extended for buckling analysis of FMPs by considering the strain gradient effects, for which the constitutive equation of the strain gradient model contains only one constant. The Galerkin weak form of the governing equation is derived and subsequently solved for a variety of boundary conditions, using higher continuity p finite elements, to extract critical buckling loads. Here the computational procedure is verified by comparing the results to those of the classical theory and microplate studies reported in literature. Investigations indicate that the length scale parameter affects the computed flexural stiffness of a plate directly proportional to the value of gradient coefficient considered for that plate. Hence there is a strong influence of length scale parameter on the value of the buckling load. Depending on boundary conditions and the length scale parameter value, the classical plate model severely underestimates (up to 90%) the buckling load of microplates. Therefore it is concluded that the classical plate theory cannot be used to predict structural response when length scale effects are present.

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CITADO POR
  1. Ansari R., Shojaei M. Faghih, Mohammadi V., Gholami R., Rouhi H., Size-Dependent Thermal Buckling and Postbuckling of Functionally Graded Annular Microplates Based on the Modified Strain Gradient Theory, Journal of Thermal Stresses, 37, 2, 2014. Crossref

  2. Ke L.L., Yang J., Kitipornchai S., Bradford M.A., Wang Y.S., Axisymmetric nonlinear free vibration of size-dependent functionally graded annular microplates, Composites Part B: Engineering, 53, 2013. Crossref

  3. Kolahchi Reza, Bidgoli Mahmood Rabani, Beygipoor Gholamhossein, Fakhar Mohammad Hosein, A nonlocal nonlinear analysis for buckling in embedded FG-SWCNT-reinforced microplates subjected to magnetic field, Journal of Mechanical Science and Technology, 29, 9, 2015. Crossref

  4. Arani A. G., Jafari G. S., Nonlinear vibration analysis of laminated composite Mindlin micro/nano-plates resting on orthotropic Pasternak medium using DQM, Applied Mathematics and Mechanics, 36, 8, 2015. Crossref

  5. Ansari R., Shojaei M. Faghih, Mohammadi V., Gholami R., Rouhi H., Nonlinear Vibration Analysis of Microscale Functionally Graded Timoshenko Beams using the Most General form of Strain Gradient Elasticity, Journal of Mechanics, 30, 2, 2014. Crossref

  6. Ansari R., Shojaei M. Faghih, Rouhi H., Small-scale Timoshenko beam element, European Journal of Mechanics - A/Solids, 53, 2015. Crossref

  7. Barzoki Ali Akbar Mosallaie, Loghman Abbas, Arani Ali Ghorbanpour, Temperature-dependent nonlocal nonlinear buckling analysis of functionally graded SWCNT-reinforced microplates embedded in an orthotropic elastomeric medium, Structural Engineering and Mechanics, 53, 3, 2015. Crossref

  8. Farahmand H., A variational approach for analytical buckling solution of moderately thick microplate using strain gradient theory incorporating two-variable refined plate theory: a benchmark study, Journal of the Brazilian Society of Mechanical Sciences and Engineering, 43, 3, 2021. Crossref

  9. Farahmand H., Yasaie P., Instability analysis of moderately thick porous micro-plate via two-variable strain gradient theory, Archive of Applied Mechanics, 91, 11, 2021. Crossref

  10. Ghalami Yasaman, Askari Amir R., Awrejcewicz Jan, Tahani Masoud, Strain gradient bistability of bimorph piezoelectric curved beam interacting with a curved electrode, Journal of the Brazilian Society of Mechanical Sciences and Engineering, 44, 5, 2022. Crossref

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