A new approach for nonlinear buckling analysis of imperfect functionally graded carbon nanotube-reinforced composite plates

Thang, Pham Toan; Nguyen, Tan-Tien; Lee, Jae Hong

doi:10.1016/j.compositesb.2016.12.002

Cited by 51 publications

(16 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Malekzadeh and Shojaee ,2013 [3] investigated buckling behavior of laminated plates. The plate is quadrilateral and is thin to middle thickness and composed of bonded carbon layer nanotube reinforced composite.…”

Section: Introductionmentioning

confidence: 99%

Buckling analysis of reinforced composite plates with a multiwall carbon nanotube (MWCNT)

Ntayeesh

Ismail

Saihood

2019

PEN

View full text Add to dashboard Cite

Buckling analysis of mechanical structures is essential to insure stability under loading .Critical load of buckling refer to the maximum load can be withstood without losing of stability and avoid a catastrophic damage due to the collapse of columns .Improving of mechanical properties spatially those related with elastic behaviors of materials can lead to improving buckling since it can be raised the value of critical load. Nanotechnology is one of the modern methods which makes significant effects on the mechanical properties of materials. In the field of composite materials this technology leads to valuable improvements for the favorite properties. In this regard Nano composite materials are paid a spatial attention in research for the last decade. The main aim of the present work is to investigate the effect of Nano carbon weight fraction on buckling of the composite plate. Five samples of Nano composite plates were prepared and fabricated for experimental investigations .The plate samples are combined of woven reinforcement fiber and polyester matrix with Carbon .The weight fraction of Nano additives are 0 %, 0.5%, 1%, ,1.5 and 2%, of resin materials weight. To provide homogenous composite an ultrasonic homogenizer is utilized. The experimental work include buckling test for different Nano plates samples with simply supported at two ends and free at the other .Finite Element analysis was achieved via ANSYS R15.0 with proper elements ,meshing ,boundary condition and static analysis .It is found that increasing of Nano carbon weight ratio tends to increase critical load of buckling ,the maximum buckling load is at 2% wt ratio and the experimental results shows fair validation for the numerical analysis where the maximum error dos not exceeded 15% .

show abstract

Section: Introductionmentioning

confidence: 99%

Buckling analysis of reinforced composite plates with a multiwall carbon nanotube (MWCNT)

Ntayeesh

Ismail

Saihood

2019

PEN

View full text Add to dashboard Cite

show abstract

“…Carbon Nanotubes (CNTs) and their degenerated modifications including nanocones, capped CNTs, fullerene, Yjunctions, linearly-joined and angle-adjoined CNTs, are a class of promising low-dimensional materials used in the electronics, composites, and energy conversion areas, which performance are directly related to their mechanical properties and stabilities [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. The buckling of nanomaterials under compression loading, is influenced by the physical height of the models, their axial symmetry, relative position to normal reference plane and their fixation mode.…”

Section: Introductionmentioning

confidence: 99%

“…The buckling of nanomaterials under compression loading, is influenced by the physical height of the models, their axial symmetry, relative position to normal reference plane and their fixation mode. Buckling is an essential parameter often utilized to examine nanomaterials mechanical behaviors [7][8][9][10][11]. As such, the buckling of single-and multi-walled CNTs have been previously investigated.…”

Section: Introductionmentioning

confidence: 99%

Effects of geometric variations on buckling properties of carbon nanostructures: A finite element analysis

Golesorkhie¹,

Navi²

2020

JMES

View full text Add to dashboard Cite

Critical Bucking Load (CBL) is one of the essential parameters to describe the mechanic stabilities of materials, e.g. the low-dimensional carbon nanostructures. While the CBL of pristine carbon nanotubes have been previously investigated using the quantum mechanics-based calculations, the effect of geometrical variation on the CBL of carbon nanomaterials is rarely reported since it need considerably large atomic models, which needs high computational cost. In this study, both the analytical and Finite Element (FE) methods were employed to systematically explore the impact of atomic vacancies, shapes and heterostructures on the CBLs of carbon nanomaterials with the acceptable computational cost. Our studies on the pristine CNTs first demonstrate the validity of the method we used. After that, the systems with mono-/bi-/tri-/pinole-vacancies either on nanocones, nanotube, linearly-joined nanotubes or angle-adjoined were simulated and analyzed. Our results reveal that the CBL values decrease with the increase of the aspect ratio of all considered nanomaterials. Based on the obtained results, the CBL of nanocone with the aspect ratio of 1, reduces significantly, from 50 nN to 10 nN when the aspect ratio is 3. The CBL of homogeneous, capped, and joint CNTs reduces to below 2 nN when the aspect ratio is above 14. The introduction of geometric variations can greatly affect the CBL values. The larger atomic vacancy has more serious impact on the CBLs. The most highlighted impact is for the pinhole vacancy where the CBL reduces to up to 70% of the original value. Our studies on linearly-joint and angle-joint carbon hybrids further demonstrate that the CBL can also be affected by the boundary conditions and joint structures of the hybrids.

show abstract

“…This topic clearly falls within the aim of the optimal design of composite structures [53][54][55][56][57][58]. It should be mentioned that a similar approach is followed in the design of functionally graded carbon-nanotube-reinforced composites, due to the advancements in nanostructures and nanotechnologies [59][60][61][62][63][64][65][66][67][68].…”

Section: Introductionmentioning

confidence: 99%

Natural Frequency Analysis of Functionally Graded Orthotropic Cross-Ply Plates Based on the Finite Element Method

Bacciocchi

Tarantino

2019

MCA

View full text Add to dashboard Cite

This paper aims to present a finite element (FE) formulation for the study of the natural frequencies of functionally graded orthotropic laminated plates characterized by cross-ply layups. A nine-node Lagrange element is considered for this purpose. The main novelty of the research is the modelling of the reinforcing fibers of the orthotropic layers assuming a non-uniform distribution in the thickness direction. The Halpin–Tsai approach is employed to define the overall mechanical properties of the composite layers starting from the features of the two constituents (fiber and epoxy resin). Several functions are introduced to describe the dependency on the thickness coordinate of their volume fraction. The analyses are carried out in the theoretical framework provided by the first-order shear deformation theory (FSDT) for laminated thick plates. Nevertheless, the same approach is used to deal with the vibration analysis of thin plates, neglecting the shear stiffness of the structure. This objective is achieved by properly choosing the value of the shear correction factor, without any modification in the formulation. The results prove that the dynamic response of thin and thick plates, in terms of natural frequencies and mode shapes, is affected by the non-uniform placement of the fibers along the thickness direction.

show abstract

A new approach for nonlinear buckling analysis of imperfect functionally graded carbon nanotube-reinforced composite plates

Cited by 51 publications

References 42 publications

Buckling analysis of reinforced composite plates with a multiwall carbon nanotube (MWCNT)

Buckling analysis of reinforced composite plates with a multiwall carbon nanotube (MWCNT)

Effects of geometric variations on buckling properties of carbon nanostructures: A finite element analysis

Natural Frequency Analysis of Functionally Graded Orthotropic Cross-Ply Plates Based on the Finite Element Method

Contact Info

Product

Resources

About