Vibration properties and transverse shear characteristics of multibody molded beetle elytron plates

Zhang, Xiaoming; Yu, Xindi; Chen, Jinxiang; Pan, Longcheng; Hu, Liping; Fu, Yaqin

doi:10.1007/s11431-019-1570-6

Cited by 10 publications

(11 citation statements)

References 38 publications

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“…The first-order natural frequency of the EBEP fc was 122.5 Hz, which was 3.9% lower than that of HP fc , and the second-order natural frequency was 478.3 Hz, which was 2.9% lower than that of HP fc . Compared with a previous study [ 30 ], the first-order natural frequency of a 3D-printed aluminum alloy HP was approximately 2% lower than that of an EBEP. Although all the differences were small in both studies, the natural frequency of the EBEP fc in this study decreased more from the first-order to the second-order mode.…”

Section: Resultscontrasting

confidence: 82%

“…Thus, Figure 7 shows the shear force proportions of the basalt fiber-reinforced polymer (BFRP) core skeleton, foam, and skin of the HP fc and EBEP fc in the virtual line box in Figure 3 b. Since the shear force distribution was repeated in a cycle (T) of 37.5 mm along the X-direction ( Figure 7 ), the method used in a previous study [ 30 ] was applied here; the structure of a sandwich plate in a cycle was divided into two areas, namely, the trabeculae area and honeycomb wall area ( Figure 7 a 2 ,b 2 ). The honeycomb was regarded as an open triangular column with a diameter of 0 [ 30 ].…”

Section: Resultsmentioning

confidence: 99%

“…Since the shear force distribution was repeated in a cycle (T) of 37.5 mm along the X-direction ( Figure 7 ), the method used in a previous study [ 30 ] was applied here; the structure of a sandwich plate in a cycle was divided into two areas, namely, the trabeculae area and honeycomb wall area ( Figure 7 a 2 ,b 2 ). The honeycomb was regarded as an open triangular column with a diameter of 0 [ 30 ]. For convenience of comparison, Figure 8 also cited the results of the unfilled metal HP and BEP [ 30 ].…”

Section: Resultsmentioning

confidence: 99%

“…To investigate the vibrational characteristics of the EBEP fc , in this study, the difference in the vibrational characteristics of the HP fc and EBEP fc were explored from the shear force proportion characteristics under a transverse static load, by using the method applied in our previous research [ 30 ]. Notably, although the inertial force caused by mass difference leads to differences in the dynamic and static mechanical properties of sandwich plates under transverse loading, when the structure is within the elastic range, its dynamic and static responses are usually positively correlated [ 30 , 32 ]. Therefore, a FE static loading simulation was used to explore the shear characteristics and the vibrational performance of the HP fc and EBEP fc .…”

Section: Sample Preparation and Experimental Methodsmentioning

confidence: 99%

“…The results proved that the mechanical properties of compression [ 26 ], energy absorption [ 27 ], bending [ 28 ], and shearing [ 29 ] of the EBEP were significantly better than those of traditional honeycomb plates. In this context, the vibrational characteristics of a 3D-printed BEP composed of aluminum were proven in a previous study [ 30 ] to be better than those of a traditional honeycomb plate. The vibrational response of the BEP was approximately 25% less than that of the honeycomb plate, with almost the same first natural frequency.…”

Section: Introductionmentioning

confidence: 97%

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Vibrational Characteristics of a Foam-Filled Short Basalt Fiber Reinforced Epoxy Resin Composite Beetle Elytron Plate

Chen

et al. 2022

Materials

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The vibrational properties and mechanism of a foam-filling short basalt fiber reinforced epoxy resin composite beetle elytron plate (EBEPfc) were studied by experiments and the finite element (FE) method in this paper. The experimental results showed that the natural frequencies of the first two modes of the EBEPfc were very close to those of a foam-filling short basalt fiber reinforced epoxy resin composite honeycomb plate (HPfc), while the vibrational response of the EBEPfc was weaker than that of the HPfc, and the damping ratio was improved; the improvement of the second mode was significant. Therefore, the EBEPfc had a better vibration reduction performance and could directly replace the HPfc in engineering applications. The FE results showed that foam filling enhanced the shear stiffness of the whole core structure, and had a more obvious effect on the shear stiffness of the HPfc. Meanwhile, it particularly reduced the shear force proportions and contributed to the protection of the skin and core skeleton. The mechanisms of the vibrational characteristics of these two types of sandwich plates were explored from the perspective of the equivalent cross-sectional area, shear stiffness, shear strain energy per unit volume and friction. These results provide a valuable reference for the promotion and application of EBEPfc in the fields of vibration reduction and seismic resistance.

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Section: Resultscontrasting

confidence: 82%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Sample Preparation and Experimental Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

See 3 more Smart Citations

Vibrational Characteristics of a Foam-Filled Short Basalt Fiber Reinforced Epoxy Resin Composite Beetle Elytron Plate

Chen

et al. 2022

Materials

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Free and forced vibration response of a laminated composite sandwich beam with dual honeycomb core: Numerical and experimental study

Thanikasalam,

Ramamoorthy

2023

Polymer Composites

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Free and forced vibration characteristics of composite sandwich beams with single‐core (SC) and dual‐core (DC) are investigated in this study. The wet hand‐layup technique is followed to make the composite face sheet, and honeycomb cores are 3D printed using the fused filament fabrication method. The natural frequencies of SC and DC sandwich beams were measured using experimental modal tests and validated through a three‐dimensional finite‐element model. Also, parametric studies on the geometry of composite structures are performed to scrutinize the effect of DC sandwich beams with different ply orientations, length‐to‐breadth ratios, core thickness, and core cell wall thickness. In addition, the transverse vibration responses of SC and DC sandwich beams are examined under harmonic force excitations at different end conditions. The study result shows that the sandwich beam's vibration behavior is enhanced by the inclusion of a core.

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Extraction and reconstruction of a beetle forewing cross-section point set and its curvature characteristics

Song

Chen

et al. 2021

Pattern Anal Applic

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Vibration properties and transverse shear characteristics of multibody molded beetle elytron plates

Cited by 10 publications

References 38 publications

Vibrational Characteristics of a Foam-Filled Short Basalt Fiber Reinforced Epoxy Resin Composite Beetle Elytron Plate

Vibrational Characteristics of a Foam-Filled Short Basalt Fiber Reinforced Epoxy Resin Composite Beetle Elytron Plate

Free and forced vibration response of a laminated composite sandwich beam with dual honeycomb core: Numerical and experimental study

Extraction and reconstruction of a beetle forewing cross-section point set and its curvature characteristics

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