Effect of crack location on buckling and dynamic stability in plate frame structures

Gönenli, Can; Daş, Oğuzhan

doi:10.1007/s40430-021-03032-2

Cited by 14 publications

(11 citation statements)

References 23 publications

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“…Shear deformation is negligible in thin and moderately thin plates [19][20][21]. Thus, the Classical Plate Theory (CPT) is suitable to moderately thin and very thin plates.…”

Section: Methodsmentioning

confidence: 99%

“…Hence the element stiffness and mass matrices are expanded to (24x24) from (20x20). The corresponding diagonal values of [θz]4x4 has taken absolute value that 1/1000 of the minimum value in (20x20) stiffness and mass matrices, while other values of [θz]4x4 are considered to be zero [19,24]. The generalized displacement vector of the j th node for local reference coordinates is expressed as:…”

Section: = (10)mentioning

confidence: 99%

“…The Kco is subtracted from the element stiffness matrix (Ke) then the cracked element stiffness matrix (Kc) is obtained. The free vibration analysis is repeated with the (Kc) matrix inplaced separately instead of each finite element stiffness matrix (Ke) [19].…”

Section: Crack Modelmentioning

confidence: 99%

“…Vibration responses have a significant role in crack detection since cracks of different sizes and directions in the structures affect the natural frequency of the structure according to the relevant mode shape [19]. Each crack has been modeled in 100 different locations of flat and four different folded plates.…”

Section: Introductionmentioning

confidence: 99%

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Crack Detection in Folded Plates With Back-Propagated Artificial Neural Network

Gönenli¹,

Daş²,

Daş³

2021

Preprint

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Engineering structures may face various damages such as crack, delamination, and fatigue in several circumstances. Localizing such damages becomes essential to understand the health of the structures since they may not be able to operate anymore. Among the damage detection techniques, non-destructive methods are considerably more preferred than destructive methods since damage can be located without affecting the structural integrity. However, these methods have several drawbacks in terms of detecting abilities, time consumption, cost, and hardware or software requirements. Employing artificial intelligence techniques could overcome such issues and could provide a powerful damage detection model if the technique is utilized correctly. In this study, the crack localization in flat and folded plate structures has been conducted by employing a Back-propagated Artificial Neural Network (BPANN). For this purpose, cracks with 18 different dimensions have been modeled in flat and four different folded structures by utilizing the Finite Element Method. The dataset required to perform the crack localization procedure includes the first ten natural frequencies of all structures as input variables. As output variables, the dataset contains a total of 500 crack locations for five structures. It is concluded that the BPANN can localize all cracks with an average accuracy of 95.12%.

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“…Shear deformation is negligible in thin and moderately thin plates [19][20][21]. Thus, the Classical Plate Theory (CPT) is suitable to moderately thin and very thin plates.…”

Section: Methodsmentioning

confidence: 99%

Section: = (10)mentioning

confidence: 99%

Section: Crack Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Crack Detection in Folded Plates With Back-Propagated Artificial Neural Network

Gönenli¹,

Daş²,

Daş³

2021

Preprint

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“…2021) investigated the higherorder free vibration analysis with multiple cutouts on elastic plates. On the other hand, Gonenli et al (2021), and Gonenli and Das (2021) investigated the effect of crack on vibration response and dynamic stability for the different types of plate structures. In this paper, the effect of damage on circular and annular plates with different boundary conditions is investigated.…”

Section: Introductionmentioning

confidence: 99%

Free vibration analysis of circular and annular thin plates based on crack characteristics

Gönenli¹,

Daş²

2022

Rep. Mech. Eng.

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This study presents the effect of vertical and horizontal oriented cracks on free vibration response for circular and annular thin plates. To investigate the dynamic behavior of the damaged circular structures the cracks are modeled separately considering horizontal/vertical orientations, ten different locations, and four crack sizes. For annular thin plates, vertical and horizontal oriented cracks are placed in the middle between the outer and inner edges to investigate the effect of crack directions. The first five resonant frequencies, and the corresponding mode shapes of the cracked circular and annular plates, are obtained by employing the Finite Element Method. The free vibration analyses are conducted considering clamped boundary conditions for circular plates and clamped-clamped, clamped-free, and free-clamped boundary conditions for annular plates. The results are presented and interpreted considering the differences in the non-dimensional frequencies and the mode shapes of those structures. According to the findings, it is seen that depending on its location and size, a crack can change the mode shapes by accumulating the bending regions around it. Besides, a crack may also change the number of bending regions that occurred in the mode shapes of the circular or annular structures.

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Effect of Cut-Out Location on the Dynamic Behaviour of Plate Frame Structures

Gönenli

2022

J. Vib. Eng. Technol.

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Effect of crack location on buckling and dynamic stability in plate frame structures

Cited by 14 publications

References 23 publications

Crack Detection in Folded Plates With Back-Propagated Artificial Neural Network

Crack Detection in Folded Plates With Back-Propagated Artificial Neural Network

Free vibration analysis of circular and annular thin plates based on crack characteristics

Effect of Cut-Out Location on the Dynamic Behaviour of Plate Frame Structures

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