Experimental and numerical study on free vibration characteristics of laminated composite plate with/without cut-out

Sinha, Leena; Das, Debajeet; Nayak, Amar Nath; Sahu, S. K.

doi:10.1016/j.compstruct.2020.113051

Cited by 34 publications

(14 citation statements)

References 51 publications

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“…The numerical model is validated by comparing the natural frequency in Hz for CFFF plates that have the length of 0.235 m corresponding to the first mode predicted by this study to those provided by Sinha et al [34] with the same parameters. As shown in Table 3, the parameters used in this study, especially the size and position of the cutouts, are same as those in the work of Sinha et al [34].…”

Section: Validation Of the Fe Modelmentioning

confidence: 93%

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Finite Element and Neural Network Based Predictive Model to Determine Natural Frequency of Laminated Composite Plates with Eccentric Cutouts under Free Vibration

Seba

Kebdani

2022

Adv. technol. innov.

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This research proposes a predictive model to identify changes in the mechanical and geometrical properties of composite plates with eccentric cutouts based on natural frequency. Finite elements (FE) and neural networks are used to develop the model based on machine learning. First, the numerical analysis of free vibration is performed by the FE model on the laminated composite plates with a stacking sequence [0/90]2s under a clamped-free (CFFF) boundary condition. The outputs of the FE model (520 configurations) are then utilized to train the artificial neural network (ANN) model through the Levenberg-Marquardt method, and the developed ANN model is then used to evaluate the influence of various parameters on the natural frequency. The results show that the changes in the mechanical and geometrical properties of composite plates have impacts on the natural frequency. Furthermore, the findings of the ANN model are substantially identical to those of the numerical model, with a small margin of error.

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Section: Validation Of the Fe Modelmentioning

confidence: 93%

“…The model developed for this study, as shown in Fig. 1, is inspired by the elastic composite stacking sequence [0/90] 2s considered by Sinha et al [34]. The composite laminate square model is modified by introducing a group of eccentric cutouts.…”

Section: Methodsmentioning

confidence: 99%

Finite Element and Neural Network Based Predictive Model to Determine Natural Frequency of Laminated Composite Plates with Eccentric Cutouts under Free Vibration

Seba

Kebdani

2022

Adv. technol. innov.

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show abstract

“…Also, they said that BFRP composites showed higher damping properties than GFRP composite samples. Cut-outs are inevitable geometrical requirements in the structural members for various purposes such as reducing the weight, providing access to different areas, quality control, inspection purposes, ventilation to facilitate heat distribution, to avoid induced acoustic noise (Sinha et al 2021, Mandal et al 2020. The cut-out applications with different geometric shapes are seen in many fields in the aeronautical, mechanical, electrical and civil structures (Hashemi and Hamza-Cherif 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Several studies devoted to vibrationdamping behaviors of polymer-based composites with cut-outs are seen in the literature (Sivakumar et al 1999, Poore et al 2008, Erkliğ et al 2013, Bicos and Springer 1989. Sinha et al (2021) performed the experimental and numerical studies on the free vibration response of glass fiber reinforced composite laminates with cut-outs. The samples having different size and position of cut-outs have been examined at various boundary conditions.…”

Section: Introductionmentioning

confidence: 99%

Effect of Cut-outs on the Free Vibration Response of Basalt/Carbon Hybrid Composites

Özbek¹,

Bozkurt²

2021

Afyon Kocatepe University Journal of Sciences and Engineering

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The current work deals with an experimental investigation about the influence of cut-outs on dynamic characteristics of basalt/carbon hybrid fiber reinforced composite laminates. The composite samples have been fabricated via vacuum assisted resin transfer molding technique and cut-outs in the form of triangular, square and circular shapes with equal areas have been processed on them to systematically analyze the influences of cut-outs. The dynamic characteristics of the samples have been examined by conducting free vibration-damping tests and expressed in terms of natural frequency and damping ratio using the frequency response and time-acceleration response. The results show that the damping characteristics of the composite samples can be remarkably improved with the help of cut-outs which provide improvements approximately between 2.41% and 16.65% in damping ratio values. The maximum and minimum variations in damping ratio have observed for non-hybrid carbon fiber reinforced composite samples with triangular cut-out (T-C6) and hybrid basalt/carbon fiber reinforced composite samples with circular cut-out (C-B6), respectively. On the other hand, the presence of cutouts have led to decreases in natural frequency values as a result of reduction in stiffness caused by the cut-outs. This point out that employment of cut-outs can be a promising application to meet the natural frequency requirements of engineering systems constructed with hybrid fiber reinforced composite laminates.

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“…Most recently, Du and co-workers developed a fabrication strategy inspired by origami techniques; they combined analytical, numerical, and experimental methods to investigate the mechanical properties of origami-inspired carbon fiber-reinforced composite sandwich materials [ 50 ]. In addition, it can be seen from the above literature review that most of the existing works are limited to quasi-static or static research, and there are few works on vibration characteristics [ 51 , 52 ]. It is well-known that vibration characteristics are a common concern in practical engineering, so it is extremely important to carry out research on this aspect of origami.…”

Section: Introductionmentioning

confidence: 99%

Revealing the Dynamic Characteristics of Composite Material-Based Miura-Origami Tube

Zhu

Wang

et al. 2021

Materials

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Although Miura origami has excellent planar expansion characteristics and good mechanical properties, its congenital flaws, e.g., open sections leading to weak out-of-plane stiffness and constituting the homogenization of the material, and resulting in limited design freedom, should also be taken seriously. Herein, two identical Miura sheets, made of carbon fiber/epoxy resin composite, were bonded to form a tubular structure with closed sections, i.e., an origami tube. Subsequently, the dynamic performances, including the nature frequency and the dynamic displacement response, of the designed origami tubes were extensively investigated through numerical simulations. The outcomes revealed that the natural frequency and corresponding dynamic displacement response of the structure can be adjusted in a larger range by varying the geometric and material parameters, which is realized by combining origami techniques and the composite structures’ characteristics. This work can provide new ideas for the design of light-weight and high-mechanical-performance structures.

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Experimental and numerical study on free vibration characteristics of laminated composite plate with/without cut-out

Cited by 34 publications

References 51 publications

Finite Element and Neural Network Based Predictive Model to Determine Natural Frequency of Laminated Composite Plates with Eccentric Cutouts under Free Vibration

Finite Element and Neural Network Based Predictive Model to Determine Natural Frequency of Laminated Composite Plates with Eccentric Cutouts under Free Vibration

Effect of Cut-outs on the Free Vibration Response of Basalt/Carbon Hybrid Composites

Revealing the Dynamic Characteristics of Composite Material-Based Miura-Origami Tube

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