Vibration Damping Design and Testing Research of Space Payload Cabinet

Luo, Haitao; Fua, Jia; Chen, Rong; Wang, Peng

doi:10.31209/2019.100000089

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…1–10,11−17 Petrochemicals and industries are considered the main blind spots in the global energy dispute, given the effect that the sector will apply on future energy trends. 18–25,26−30 To reduce environmental pollutants from combustion, several methods have been proposed. 31–40 One of the most effective strategies for using pre-mixed combustion is the low ratio of fuel to air.…”

Section: Introductionmentioning

confidence: 99%

Modeling of a dry low nitrogen oxides burner using a three-dimensional computational fluid dynamics simulation

Sun

Duan

Hao

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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Nitrogen oxides are considered as one of the greenhouse gases. Among the most significant emission sources for this gas is a natural gas-fired power plant. The United Nations General assembly suggested in 1988 that human activities can negatively impact weather patterns, and thus they should be controlled. This control policy can improve the efficiency of final consumers such as power plants, cars, or other energy-intensive industries. In this paper, the existing strategies and explicitly making the dry low nitrogen oxides burner reduce greenhouse gases in power plants are explored. The geometry of the burner has been produced in a three-dimensional form in GAMBIT software, and the results of the simulation have been expressed through FLUENT software. Contours of pressure, temperature, and velocity of the fluid in the furnace are also derived. It is concluded that the dry low nitrogen oxides burners plan has a better result compared with other strategies.

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Section: Introductionmentioning

confidence: 99%

Modeling of a dry low nitrogen oxides burner using a three-dimensional computational fluid dynamics simulation

Sun

Duan

Hao

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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“…Constrained layer damping (CLD) treatment is one of the most effective ways for suppressing noise and vibration in thin-walled structures. [4][5][6][7][8] It consists in applying a viscoelastic layer covered by a much stiffer elastic layer onto the surface of thin-walled structures. The viscoelastic layer will undergo periodic shear deformation along with structural vibration and dissipate structural energy by using the phase difference between stress and strain in viscoelastic damping material, so as to achieve the purpose of reducing vibration and noise.…”

Section: Introductionmentioning

confidence: 99%

Topology optimization of partial constrained layer damping treatment on plate for maximizing modal loss factors

Chen

Luo

Wang

et al. 2021

Composites and Advanced Materials

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Constrained layer damping treatment is widely used to suppress the vibration and noise of thin-walled structures. However, full coverage of constrained damping layer will increase unnecessary additional mass, resulting in material waste and cannot effectively improve the damping performance of the composite structure. In this article, a topology optimization approach is proposed to realize the optimal distribution of constrained damping layer. The design objective is to maximize modal loss factors solved by the modal strain energy method under the constraint of volume. Taking the relative density of the finite element of the constrained damping layer as design variable, the solid isotropic material with penalization method is used to realize the optimal topological distribution of the damping material on the surface of the metal substrate. Then the moving asymptote method is adopted as an optimizer to search the optimal layout of the constrained damping layer. Based on a modified modal superposition method, the sensitivities of the objective function with respect to the design variables are obtained. Numerical examples and experiments are presented for illustrating the validity and efficiency of this approach. The results show that the objective function converges to the optimal value smoothly, and the optimized modal loss factors have been significantly improved. The layouts of the constrained damping layer after optimization are clear and reasonable, and its distributions are affected by both the damping layer and the constraining layer. Each part of the constrained damping layer after optimizing can greatly improve the damping performance of the structure.

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Vibration Damping Design and Testing Research of Space Payload Cabinet

Cited by 2 publications

References 9 publications

Modeling of a dry low nitrogen oxides burner using a three-dimensional computational fluid dynamics simulation

Modeling of a dry low nitrogen oxides burner using a three-dimensional computational fluid dynamics simulation

Topology optimization of partial constrained layer damping treatment on plate for maximizing modal loss factors

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