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Volume 14, Issue 4
Dynamic Loadings Induced Vibration of Third Order Shear Deformable FG-CNTRC Beams: Gram-Schmidt-Ritz Method

Arisara Chaikittiratana & Nuttawit Wattanasakulpong

Adv. Appl. Math. Mech., 14 (2022), pp. 816-841.

Published online: 2022-04

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  • Abstract

This research work deals with a study on dynamic behavior of functionally graded carbon nanotube-reinforced composite (FG-CNTRC) beams under various types of dynamic loads. Carbon nanotubes (CNTs) are used as the reinforcing materials that distribute continuously across the beam thickness. By using third order shear deformable theory (TSDT) in this current study, the straightness and normality of the transverse normal after deformation are unconstrained. The equations of motion based on TSDT are solved by Gram-Schmidt-Ritz method in which the displacement functions are generated via Gram-Schmidt procedure. Additionally, the time-integration of Newmark is also employed to carry out dynamic response of the beams under dynamic loads. Several effects such as material distributions, types of dynamic loads, boundary conditions and so on are taken into account. According to numerical results, it can be revealed that adding small amount of CNTs can reduce considerably the dynamic amplitude of FG-CNTRC beams. Moreover, the dynamic analysis of beam-like structures plays an important role in structural design because mass inertia matrix of the beam being involved in the equations of motion, which yields much larger deflection than that predicted by simple static analysis.

  • AMS Subject Headings

65M10, 78A48

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COPYRIGHT: © Global Science Press

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@Article{AAMM-14-816, author = {}, title = {Dynamic Loadings Induced Vibration of Third Order Shear Deformable FG-CNTRC Beams: Gram-Schmidt-Ritz Method}, journal = {Advances in Applied Mathematics and Mechanics}, year = {2022}, volume = {14}, number = {4}, pages = {816--841}, abstract = {

This research work deals with a study on dynamic behavior of functionally graded carbon nanotube-reinforced composite (FG-CNTRC) beams under various types of dynamic loads. Carbon nanotubes (CNTs) are used as the reinforcing materials that distribute continuously across the beam thickness. By using third order shear deformable theory (TSDT) in this current study, the straightness and normality of the transverse normal after deformation are unconstrained. The equations of motion based on TSDT are solved by Gram-Schmidt-Ritz method in which the displacement functions are generated via Gram-Schmidt procedure. Additionally, the time-integration of Newmark is also employed to carry out dynamic response of the beams under dynamic loads. Several effects such as material distributions, types of dynamic loads, boundary conditions and so on are taken into account. According to numerical results, it can be revealed that adding small amount of CNTs can reduce considerably the dynamic amplitude of FG-CNTRC beams. Moreover, the dynamic analysis of beam-like structures plays an important role in structural design because mass inertia matrix of the beam being involved in the equations of motion, which yields much larger deflection than that predicted by simple static analysis.

}, issn = {2075-1354}, doi = {https://doi.org/10.4208/aamm.OA-2020-0177}, url = {http://global-sci.org/intro/article_detail/aamm/20435.html} }
TY - JOUR T1 - Dynamic Loadings Induced Vibration of Third Order Shear Deformable FG-CNTRC Beams: Gram-Schmidt-Ritz Method JO - Advances in Applied Mathematics and Mechanics VL - 4 SP - 816 EP - 841 PY - 2022 DA - 2022/04 SN - 14 DO - http://doi.org/10.4208/aamm.OA-2020-0177 UR - https://global-sci.org/intro/article_detail/aamm/20435.html KW - CNTRC beam, dynamic loads, moving load, gram-schmidt procedure, third order shear deformation theory. AB -

This research work deals with a study on dynamic behavior of functionally graded carbon nanotube-reinforced composite (FG-CNTRC) beams under various types of dynamic loads. Carbon nanotubes (CNTs) are used as the reinforcing materials that distribute continuously across the beam thickness. By using third order shear deformable theory (TSDT) in this current study, the straightness and normality of the transverse normal after deformation are unconstrained. The equations of motion based on TSDT are solved by Gram-Schmidt-Ritz method in which the displacement functions are generated via Gram-Schmidt procedure. Additionally, the time-integration of Newmark is also employed to carry out dynamic response of the beams under dynamic loads. Several effects such as material distributions, types of dynamic loads, boundary conditions and so on are taken into account. According to numerical results, it can be revealed that adding small amount of CNTs can reduce considerably the dynamic amplitude of FG-CNTRC beams. Moreover, the dynamic analysis of beam-like structures plays an important role in structural design because mass inertia matrix of the beam being involved in the equations of motion, which yields much larger deflection than that predicted by simple static analysis.

Arisara Chaikittiratana & Nuttawit Wattanasakulpong. (2022). Dynamic Loadings Induced Vibration of Third Order Shear Deformable FG-CNTRC Beams: Gram-Schmidt-Ritz Method. Advances in Applied Mathematics and Mechanics. 14 (4). 816-841. doi:10.4208/aamm.OA-2020-0177
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