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International Journal for Multiscale Computational Engineering

Erscheint 6 Ausgaben pro Jahr

ISSN Druckformat: 1543-1649

ISSN Online: 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

Indexed in

FREE VIBRATION PROPERTY ANALYSIS OF COMPOSITE LAMINATED MICROPLATES BASED ON DIFFERENT HYPOTHESES IN COUPLE STRESS CONSTITUTIVE EQUATIONS

Volumen 16, Ausgabe 2, 2018, pp. 163-186
DOI: 10.1615/IntJMultCompEng.2018026293
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ABSTRAKT

The free vibration property of composite laminated microplates is analyzed analytically and numerically based on two kinds of couple stress plate models. The laminated microplates are composed of orthotropic plies with different ply angles which are modeled as orthotropic couple stress media. The two kinds of plates models are called as the Simplifiedmodel which is based on simplification hypotheses on the rotation and curvatures (ωz = 0, χxz =0, χyz = 0) in couple stress constitutive equations, and the Complete model without any hypotheses. Hamilton principle is employed to derive the governing equations of free vibration based on the hypotheses on the rotation and/or the curvatures in the couple stress theory and the assumption on the displacements in the plate theory. A kind of finite element is constructed for couple stress microplates, and its convergence and precision are verified through typical examples. Solutions for typical examples with different boundary conditions are obtained in closed form using Navier’s technique and by solving the eigenvalue equation, and/or by the finite element method. The application scope of the Simplified model is investigated through comparing the results with the Complete model’s. It is noted that, although the simplified model can give accurate free vibration modes for Kirchhoff and Mindlin plates, but for Reddy plates, large errors may occur. Thus, it is needed to use the complete model for free vibration analysis of high order theory of microplates.

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