Structural dynamics of smart laminated composite cylindrical shells
| dc.contributor.author | Kheirollahi Nataj Bisheh, Hossein | |
| dc.contributor.examiningcommittee | Deng, Chuang (Mechanical Engineering) Maghoul, Pooneh (Civil Engineering) Hosseini Kahsari, Seiyed Mohammad Javad (Mechanical Engineering, Golestan University) | en_US |
| dc.contributor.supervisor | Wu, Nan (Mechanical Engineering) | en_US |
| dc.date.accessioned | 2020-07-07T15:34:42Z | |
| dc.date.available | 2020-07-07T15:34:42Z | |
| dc.date.copyright | 2020-07-03 | |
| dc.date.issued | 2020-04-07 | en_US |
| dc.date.submitted | 2020-07-03T20:09:00Z | en_US |
| dc.degree.discipline | Mechanical Engineering | en_US |
| dc.degree.level | Doctor of Philosophy (Ph.D.) | en_US |
| dc.description.abstract | Smart laminated composite cylindrical shells are widely used in many engineering applications such as aerospace, mechanical, civil, and marine structures. Dynamics (wave propagation and vibration) analysis of smart laminated composite shell structures plays an important role in design and fabrication of such structures. Understanding the dynamic characteristics of composite structures can be used for detecting possible defects in a structure and monitoring its structural integrity. Proper dynamics analysis of composite cylindrical shells has significant importance in accurate determination of wave propagation and vibration characteristics. In this thesis, a set of mathematical models is developed to model wave propagation and free vibration in smart laminated composite cylindrical shells reinforced with fibers with different sizes and arrangements based on different shell theories. The resulting effective material properties for composite structures reinforced with carbon nanotubes are estimated using the Mori-Tanaka micromechanics model. The hygrothermal environmental conditions are also considered in the proposed models. Wave dispersion and free vibration analyses are performed by solving an eigenvalue problem and finding the wave phase velocities and natural frequencies for different wave and vibration modes. Through numerical simulations, the effects of various parameters such as hygrothermal environmental conditions, axial and circumferential wavenumbers, arrangement and distribution of reinforcing fibers and carbon nanotubes, stacking sequence of the laminate, shell geometry parameters, piezoelectricity, and mechanical boundary conditions on the dynamic characteristics of different composites are examined. It is concluded that the shear effects on wave dynamics of smart laminated composite cylindrical shells are much more noticeable than its effects on wave dynamics of smart isotropic cylindrical shells. Furthermore, the effects of reinforcing fibers and carbon nanotubes and their volume fraction and geometrical distribution within the structure on wave propagation characteristics are significant and must be carefully considered in the analyses of such structures. The hygrothermal environmental conditions have a moderate impact on the wave propagation and vibration characteristics. Shell geometry and boundary conditions have noticeable effects on dynamic characteristics of smart composite cylindrical shells. The theoretical and mathematical framework developed in this thesis can be used by designers and manufacturers for the analyses of structural integrity and health monitoring of smart laminated composite cylindrical shell structures. It can also be used for energy harvesting through the piezoelectric materials embedded in such structures under different environmental conditions. | en_US |
| dc.description.note | October 2020 | en_US |
| dc.identifier.citation | Hossein Bisheh, Timon Rabczuk, Nan Wu, Effects of nanotube agglomeration on wave dynamics of carbon nanotube-reinforced piezocomposite cylindrical shells, Composites Part B: Engineering, Vol. 187, April 2020, 107739. https://doi.org/10.1016/j.compositesb.2019.107739. | en_US |
| dc.identifier.citation | Hossein Bisheh, Nan Wu, Timon Rabczuk, Free vibration analysis of smart laminated carbon nanotube-reinforced composite cylindrical shells with various boundary conditions in hygrothermal environments, Thin-Walled Structures, Vol. 149, April 2020, 106500. https://doi.org/10.1016/j.tws.2019.106500. | en_US |
| dc.identifier.citation | Hossein Bisheh, Nan Wu, David Hui, Polarization effects on wave propagation characteristics of piezoelectric coupled laminated fiber- reinforced composite cylindrical shells, International Journal of Mechanical Sciences, Vol. 161, October 2019, 105028. https://doi.org/10.1016/j.ijmecsci.2019.105028. | en_US |
| dc.identifier.citation | Hossein Bisheh, Nan Wu, Wave propagation in smart laminated composite cylindrical shells reinforced with carbon nanotubes in hygrothermal environments, Composites Part B: Engineering, Vol. 162, 219-241, 2019. https://doi.org/10.1016/j.compositesb.2018.10.064. | en_US |
| dc.identifier.citation | Hossein Bisheh, Nan Wu, Wave propagation in piezoelectric cylindrical composite shells reinforced with angled and randomly oriented carbon nanotubes, Composites Part B: Engineering, Vol. 160, 10-30, 2019. https://doi.org/10.1016/j.compositesb.2018.10.001. | en_US |
| dc.identifier.citation | Hossein Bisheh, Nan Wu, On dispersion relations in smart laminated fiber-reinforced composite membranes considering different piezoelectric coupling effects, Journal of Low Frequency Noise, Vibration & Active Control, Vol. 38(2), 487–509, 2019. https://doi.org/10.1177/1461348418821773. | en_US |
| dc.identifier.citation | Hossein Kh. Bisheh, Nan Wu, Analysis of wave propagation characteristics in piezoelectric cylindrical composite shells reinforced with carbon nanotubes, International Journal of Mechanical Sciences, Vol. 145, 200-220, 2018. https://doi.org/10.1016/j.ijmecsci.2018.07.002. | en_US |
| dc.identifier.citation | Hossein Bisheh, Nan Wu, Wave propagation characteristics in a piezoelectric coupled laminated composite cylindrical shell by considering transverse shear effects and rotary inertia, Composite Structures, Vol. 191, 123-144, 2018. https://doi.org/10.1016/j.compstruct.2018.02.010. | en_US |
| dc.identifier.citation | Hossein Bisheh, Nan Wu, Effects of transverse shear and rotary inertia on wave propagation in a smart laminated composite cylindrical shell, 26th Annual International Conference on Composites/Nano Engineering (ICCE-26), July 15-21, 2018, Paris, France. | en_US |
| dc.identifier.uri | http://hdl.handle.net/1993/34761 | |
| dc.language.iso | eng | en_US |
| dc.rights | open access | en_US |
| dc.subject | Carbon nanotubes | en_US |
| dc.subject | Composite shell structure | en_US |
| dc.subject | Frequency | en_US |
| dc.subject | Piezoelectric | en_US |
| dc.subject | Smart structure | en_US |
| dc.subject | Structural dynamics | en_US |
| dc.subject | Vibration | en_US |
| dc.subject | Wave propagation | en_US |
| dc.title | Structural dynamics of smart laminated composite cylindrical shells | en_US |
| dc.type | doctoral thesis | en_US |