Analysis of the Composite Boring Bar Dynamic Characteristics Considering Shear Deformation and Rotational Inertia

Zhang, Chunjin; Ren, Yongsheng; Ji, Shujuan; Zhang, Jinfeng

doi:10.3390/app10041533

Cited by 5 publications

(4 citation statements)

References 32 publications

(39 reference statements)

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“…e dimensionless natural frequency Ω corresponding to n terms is calculated using (24), and the Ω value is determined by the following equation:…”

Section: Y(z) � 􏽘mentioning

confidence: 99%

“…Furthermore, Lee et al [23] designed a carbon fiber composite boring bar with a damping layer and proved that the L/D ratio could reach 10.7 without chatter. Considering shear deformation and rotational inertia, Zhang et al [24] analyzed the dynamic characteristics of composite boring bar. e analysis results show that the shear deformation and rotational inertia affect the vibration mode shapes of the composite boring bar and reduce its natural frequency and chatter stability.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of the Vibration and Chatter Stability of a Tapered Composite Boring Bar

Zhang

Ren

et al. 2020

Shock and Vibration

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As metal boring bars have low dynamic stiffness, chatter is easily induced during the boring process. Therefore, improvement of the chatter stability is an open problem that requires further study. Though researchers proved that the composite materials suitable for making tapered boring bars can further improve the dynamic stiffness to meet the need of high-speed boring, existing research studies did not study the dynamic characteristics of the tapered composite boring bar comprehensively. In particular, no research has been done about the natural frequency and chatter stability of the composite boring bar under various taper ratios. Therefore, in this paper, a model of a tapered composite boring bar is established based on the Adomian modified decomposition method (AMDM). Second, this paper verifies the effectiveness of the AMDM by using the ANSYS software. Moreover, this paper studies the natural frequency of the boring bar model under various situations. Third, we verify the convergence of chatter stability of the boring bar model. Finally, the chatter stability of the tapered composite boring bar is analyzed comprehensively. The results show that the natural frequency and the chatter stability of the tapered model can be improved by choosing appropriate taper ratio, ply angle, stacking sequences, L/D ratio, T/D ratio, and the carbon composite. The results are helpful for the design of high-quality tapered composite boring bars matching the need of high speed cutting. In particular, these results can provide guidelines for adjusting the cutting speed in CNC boring and can further improve the surface finish of the machined workpieces.

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“…e dimensionless natural frequency Ω corresponding to n terms is calculated using (24), and the Ω value is determined by the following equation:…”

Section: Y(z) � 􏽘mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of the Vibration and Chatter Stability of a Tapered Composite Boring Bar

Zhang

Ren

et al. 2020

Shock and Vibration

Self Cite

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“…Song et al [9] designed a composite material boring bar. Zhang et al [6,10] conducted research on boring bars made of compliant materials, including tapered boring bars made of composite materials, which have been less studied by other teams. Thorenza et al [11] investigated the effect of different boring bar cores on the dynamic characteristics of boring bars using finite element simulations and experiments.…”

Section: Introductionmentioning

confidence: 99%

Equivalent linearization of hyperelastic rubber rings in dynamic vibration absorber boring bar and simulation of its dynamic properties

Shi,

Ma,

et al. 2024

Eng. Res. Express

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A slight perturbation in high-speed precision cutting could cause violent vibration of boring bars, resulting in unexpected wear and failure of the structures. In this paper, the dynamical characteristic of a boring bar with a dynamic vibration absorber (DVA) is investigated. Considering that the nonlinear characteristics of the rubber ring play a significant role in improving the capacity of DVA, we proposed an equivalent linearization method for modeling hyperelastic rubber rings based on the experimental data of uniaxial tensile test. The relationship between the stiffness of rubber rings and the precompression parameter δ is established for two types of rubber. The equivalent linearization model shows good accuracy and calculation efficiency while the mass of the DVA is confined to a narrow space and the assumption of small strain is inherently satisfied. Numerical results show that the time cost of the equivalent linearization model is only 5% of the full hyperelastic model. Furthermore, the effect of different spring stiffnesses and damping on the dynamic characteristics of the boring bar is compared by using the equivalent linearization model, and the vibration peak of the DVA boring bar is found to be reduced about 45%. Our findings establish a simplified modeling scheme for choosing rubber rings in design of dynamic vibration absorbers with acceptable accuracy and little time cost, which could also give some reference for modeling of metal rubber and gel-like materials.

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“…According to [27], the research can be summarized and based on the different methods of vibration reduction and control of a boring bar. These studies can be divided into the following three categories: 1.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Boring Mandrel Working Process with Vibration Damper

et al. 2020

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The article considers the issue of modeling the oscillations of a boring mandrel with vibration damper connected to the mandrel with a viscoelastic coupling. A mathematical model of the boring mandrel oscillations, machine support and inertial body (damper) is developed in the form of a differential equations system. The model is made in the form of a four-mass system of connected bodies. The solution to the differential equations system was found using the finite difference method, as well as the operator method with the use of the Laplace transform. As the simulation result, it was found that the use of vibration damper can significantly reduce the amplitude of the boring mandrel natural vibrations when pulsed, and also significantly reduce the forced vibrations amplitude when exposed to periodic disturbing forces. The developed mathematical model and algorithms for the numerical solution to the differential equations allowed us to choose the optimal parameters of the boring mandrel damping element. The obtained data will be used to create a prototype boring mandrel and conduct field tests.

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Analysis of the Composite Boring Bar Dynamic Characteristics Considering Shear Deformation and Rotational Inertia

Cited by 5 publications

References 32 publications

Analysis of the Vibration and Chatter Stability of a Tapered Composite Boring Bar

Analysis of the Vibration and Chatter Stability of a Tapered Composite Boring Bar

Equivalent linearization of hyperelastic rubber rings in dynamic vibration absorber boring bar and simulation of its dynamic properties

Modeling of Boring Mandrel Working Process with Vibration Damper

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