Analytical model for flexural damping responses of CFRP cantilever beams in the low-frequency vibration

Yang, Mujie; Hu, Yefa; Zhang, Jinguang; Ding, Guoping; Song, Chunsheng

doi:10.1177/1461348418756024

Cited by 9 publications

(8 citation statements)

References 15 publications

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“…As for the CFRP laminated plate, only three damping loss factors are considered, the directions are shown in Figure 1. The damping loss factors in three direction of the laminated plate are as follows: η 11 = 0.82% η 22 = 2.98%, η 12 = 8.57% [21,22]. The damping loss factor of the structure is:…”

Section: Damping Ratiomentioning

confidence: 99%

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Investigation of the Damping Capacity of CFRP Raft Frames

Zhang

Rao

et al. 2022

Materials

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In this paper, based on the composite laminated plate theory and a strain energy model, the damping capacity of a Carbon Fiber Reinforced Plastics (CFRP) raft frame was studied. According to the finite element analysis (FEA) and damping ratio prediction model, the influences of different layups on the damping capacity of the raft frame and its components (top/bottom plate and I-support) were discussed. Comparing the FEA results with the test results, it can be figured out that the CFRP laminate layup has a great influence on the damping ratio of the raft frame, and the maximum error of the first-order natural frequency and damping ratio of the top/bottom plate were 5.6% and 15.1%, respectively. The maximum error of the first-order natural frequency of the I-support between the FEA result and the test result was 7.5%, suggesting that because of the stress concentration, the error of the damping ratio was relatively large. As for the raft frame, the damping performance was affected by the I-support arrangement and the simulation analysis was in good agreement with the experimental results. This study can provide a useful reference for improving the damping performance of CFRP raft frames.

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Section: Damping Ratiomentioning

confidence: 99%

“…As for the CFRP laminated plate, onl are considered, the directions are shown in Figure 1. The d direction of the laminated plate are as follows: 𝜂 = 0.82% [21,22].…”

Section: Damping Ratiomentioning

confidence: 99%

Investigation of the Damping Capacity of CFRP Raft Frames

Zhang

Rao

et al. 2022

Materials

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“…η k ij (i, j � 1, 2, 3) shows the damping loss factors of anisotropic materials in six directions of the CFRP. e damping loss factor of the T700/YPH-42T material used in the CFRP motor frame is η 11 � 0.82%, η 22 � 2.98%, and η 12 � 8.57% [18]. Since the 2-3 plane of CFRP is isotropic, the damping loss factor in the shear direction of the material is considered to be equal; therefore, there is η 22 � η 33 and η 12 � η 13 � η 23 .…”

Section: Damping Of the Cfrp Motor Framementioning

confidence: 99%

A Method of Reducing Motor Vibration: Natural Frequency, Damping Ratio, and Vibration Analysis of CFRP Motor Frame

Zhang

Yang

et al. 2020

Shock and Vibration

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The existing motor frame is made of metal materials. In this paper, a carbon fiber reinforced plastic (CFRP) motor frame, which uses material damping to reduce vibration amplitude, which is proposed to design and manufacture low-vibration motors. The damp ratio of the CFRP motor frame is calculated by the damp prediction model based on strain energy, which is verified by the combination of the finite element method and experiment. The vibration characteristics of the CFRP frame motor are studied experimentally and compared with that of the metal frame motor. The results show that the CFRP frame motor has good vibration reduction. The amplitude reduction is up to 5 times higher than that of the metal motor frame, which proves that the damping vibration reduction of the CFRP motor frame has a good application value.

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“…Variety of FEM formulation theories such as firstorder shear deformation theory (FSDT), higher order shear deformation theory (HSDT), full layer wise displacement, 65 lamination theory, 68 and Euler-Bernoulli Beam Theory 68 are attempted by various researchers to investigate the vibration damping properties with different parameters. Biswas and Ray's 62 results of natural frequency show that first-order shear deformation theories had good correlation with ANSYS 14.0 and experimental for thin laminate and higher order shear deformation theories for thick laminates.…”

Section: Theoretical Modelingmentioning

confidence: 99%

A comprehensive review on the vibration and damping characteristics of vegetable fiber-reinforced composites

Munde

Ingle

Siva

2019

Journal of Reinforced Plastics and Composites

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In recent past years, results on natural fiber-reinforced composites response are seriously viewed by researcher and industrial community to ensure the real-time service. Exploration on mechanical and tribological properties of several vegetable fibers is available with literature database. Nonetheless, dynamic properties of those composites are more essential to fitting them into service. In this account, few researchers have started to experiment the dynamic stability of vegetable fiber composites at elevated temperature viz., dynamic mechanical analysis at various frequencies and thermogravimetric analysis. Perhaps, the vibration and damping analysis may bring us some good sense on structural stability of those materials. Later, researchers have started to find vibrational response of materials; even then, neither complete nor accurate results/practices are recorded. Therefore, it is indeed to look in deeply the vibrational response of natural fiber-reinforced composites towards anti-vibration applications. An attempt has been made here to review some of the literature published on vibration damping applied to natural fiber-reinforced composites by experimental and numerical methods; the effects of natural fiber reinforcement on vibrational response of both thermoset and thermoplastic polymer matrix are reviewed. Discussions on the effects of several parameters are made to bring comprehensive knowledge on vibrational response of natural fiber-reinforced composites.

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Analytical model for flexural damping responses of CFRP cantilever beams in the low-frequency vibration

Cited by 9 publications

References 15 publications

Investigation of the Damping Capacity of CFRP Raft Frames

Investigation of the Damping Capacity of CFRP Raft Frames

A Method of Reducing Motor Vibration: Natural Frequency, Damping Ratio, and Vibration Analysis of CFRP Motor Frame

A comprehensive review on the vibration and damping characteristics of vegetable fiber-reinforced composites

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