ORCID Profile
0000-0001-7576-3326
Current Organisations
Shiraz University
,
Universitätsklinikum Tübingen
,
Universidad de Málaga
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Publisher: Springer Science and Business Media LLC
Date: 06-12-2018
Publisher: Elsevier BV
Date: 10-2019
Publisher: Springer Science and Business Media LLC
Date: 22-10-2019
Publisher: Elsevier BV
Date: 08-2018
Publisher: Elsevier BV
Date: 11-2019
Publisher: Springer Science and Business Media LLC
Date: 2020
Publisher: Elsevier BV
Date: 06-2022
Publisher: Elsevier BV
Date: 03-2018
Publisher: Elsevier BV
Date: 06-2019
Publisher: Elsevier BV
Date: 2018
Publisher: Bentham Science Publishers Ltd.
Date: 03-2021
DOI: 10.2174/2666184501999201005211608
Abstract: Carbon nanotubes (CNTs) reinforced structures are the main elements of structural equipment. Hence a wide range of investigations has been performed on the response of these structures. A lot of studies covered the static and dynamic phenomenon of CNTs reinforced beams, plates and shells. However, there is no study on the free vibration analysis of a doubly-curved nano-size shell made of CNTs reinforced composite materials. This work utilized a general third-order shear deformation theory to model the nanoshell where the general strain gradient theory is used in order to capture both nonlocality and strain gradient size-dependency. The Navier solution solving procedure is adopted to solve the partial differential equations (PDEs) and get the natural frequency of the system which is obtained through the Hamilton principle. The current study shows the importance of small-scale coefficients. The natural frequency increases with rising the strain gradient-size dependency which is because of stiffness enhancement, while the natural frequency decreases by increasing the nonlocality. In addition, the numerical ex les covered the CNTs distribution patterns. This work also studied the importance of shell panel’s shape. It has been observed that spherical shell panel has a higher frequency compared to the hyperbolic one. Furthermore, the frequency of the system increases with growing length-to-thickness ration.
Publisher: Elsevier BV
Date: 02-2020
Publisher: Elsevier BV
Date: 08-2018
Publisher: Informa UK Limited
Date: 12-07-2017
Publisher: Elsevier BV
Date: 11-2019
Publisher: Elsevier BV
Date: 11-2019
Publisher: Elsevier BV
Date: 07-2019
Publisher: Wiley
Date: 06-2009
Publisher: Elsevier BV
Date: 06-2019
Publisher: Cold Spring Harbor Laboratory
Date: 05-03-2019
DOI: 10.1101/566091
Abstract: We delineate a KMT2E gene-related neurodevelopmental disorder based on 38 in iduals in 36 families. This includes 31 distinct heterozygous variants in the KMT2E gene (28 ascertained from Matchmaker Exchange and 3 previously reported), and 4 in iduals with chromosome 7q22.2-22.23 microdeletions encompassing the KMT2E gene (1 previously reported). Almost all variants occurred de novo, and most were truncating. Most affected in iduals with protein-truncating variants presented with mild intellectual disability. One-quarter of in iduals met criteria for autism. Additional common features include macrocephaly, hypotonia, functional gastrointestinal abnormalities, and a subtle facial gestalt. Epilepsy was present in about one-fifth of in iduals with truncating variants, and was responsive to treatment with anti-epileptic medications in almost all. Over 70% of the in iduals were male and expressivity was variable by sex, with epilepsy more common in females and autism more common in males. The four in iduals with microdeletions encompassing KMT2E generally presented similarly to those with truncating variants, but the degree of developmental delay was greater. The group of four in iduals with missense variants in KMT2E presented with the most severe developmental delays. Epilepsy was present in all in iduals with missense variants, often manifesting as treatment-resistant infantile epileptic encephalopathy. Microcephaly was also common in this group. Haploinsufficiency versus gain-of-function or dominant negative effects specific to these missense variants in KMT2E may explain this ergence in phenotype, but requires independent validation. Disruptive variants in KMT2E are an under-recognized cause of neurodevelopmental abnormalities.
Publisher: Elsevier BV
Date: 02-2018
Publisher: MDPI AG
Date: 27-08-2019
DOI: 10.3390/APP9173517
Abstract: In this work, the nonlocal strain gradient theory is applied to study the free vibration response of a Timoshenko beam made of triclinic material. The governing equations of the problem and the associated boundary conditions are obtained by means of the Hamiltonian principle, whereby the generalized differential quadrature (GDQ) method is implemented as numerical tool to solve the eigenvalue problem in a discrete form. Different combinations of boundary conditions are also considered, which include simply-supports, cl ed supports and free edges. Starting with some pioneering works from the literature about isotropic nanobeams, a convergence analysis is first performed, and the accuracy of the proposed size-dependent anisotropic beam model is checked. A large parametric investigation studies the effect of the nonlocal, geometry, and strain gradient parameters, together with the boundary conditions, on the vibration response of the anisotropic nanobeams, as useful for practical engineering applications.
Publisher: Elsevier BV
Date: 10-2019
Publisher: Elsevier BV
Date: 05-2019
Publisher: Elsevier BV
Date: 03-2019
Publisher: SAGE Publications
Date: 06-02-2018
Abstract: The effective elastic-piezoelectric properties of nanostructures have been shown to be strongly size-dependent. In this paper, a nonlocal second-order shear deformation formulation is presented to study the size-dependent thermal buckling of embedded sandwich piezoelectric nanoplates with functionally graded core. Temperature is considered as uniform and nonlinear distributions across plate’s thickness direction. Based on the developed nonlocal second-order shear deformation theory, the size-dependent equations of motion are derived. The nonlocal thermal buckling responses of simply supported nanoplates are solved via Navier method. The reliability of present approach is verified by comparing the existing results provided in the open literature. The influences of nonlocal parameter, gradient index, electric voltage, and Winkler–Pasternak parameters on the thermal buckling characteristics of functionally graded nanoplates are examined.
Publisher: Elsevier BV
Date: 03-2022
Publisher: Elsevier BV
Date: 08-2020
Publisher: Elsevier BV
Date: 11-2018
Publisher: Springer Science and Business Media LLC
Date: 26-08-2023
Publisher: Elsevier BV
Date: 2020
Publisher: Computers, Materials and Continua (Tech Science Press)
Date: 2020
Location: Germany
Location: United Kingdom of Great Britain and Northern Ireland
No related grants have been discovered for Rebecca Buchert.