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Your search keyword '"Fei, Qingguo"' showing total 45 results
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45 results on '"Fei, Qingguo"'

2. Research progress on aircraft lightweight design of ceramic matrix composites

Author

MA Yu, ZHANG Dahai, WU Jun, JING Rui, XU Peifei, and FEI Qingguo

Subjects
aircraft, ceramic matrix composites, thermal protection structure, lightweight structure, Motor vehicles. Aeronautics. Astronautics, TL1-4050
Abstract

High Mach flight has put forward more stringent requirements for the material and structure design of new generation of high-speed vehicles. This paper reviews the application of ceramic matrix composites（CMCs） in the structural design of aircraft from the aspects of selection，application，and evaluation，and then the future development direction is put forward to provide reference for aircraft ceramic matrix composite structure design. The selection criteria and corresponding preparation methods of CMCs in different application scenarios are comprehensively reviewed，the typical applications of CMCs in aircraft structures are systematically introduced，and the evaluation criteria and ground test methods of the materials under near-service conditions are analyzed. To order to meet the future demands of aircraft，it is necessary to integrate computer-aided optimization technology and innovative preparation methods to enhance the temperature resistance and fatigue performance of CMCs. Developing highly reliable，long-life joining techniques and integrated design solutions will fully leverage the advantages of these materials. Additionally，in-situ characterization techniques under multi-physical field coupling need to be developed to obtain the performance evolution behaviour of CMCs in actual use，providing a reliable basis for the lightweight structural design of aircraft.

Published
2024
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3. Nonlinear Dynamic Modeling of a Tether-net System for Space Debris Capture

Author

Huang, Weicheng, He, Dongze, Li, Yanbin, Zhang, Dahai, Zou, Huaiwu, Liu, Hanwu, Yang, Wenmiao, Qin, Longhui, and Fei, Qingguo

Subjects
Mathematics - Numerical Analysis, Condensed Matter - Soft Condensed Matter
Abstract

In this paper, a flexible tether-net system is applied to capture the space debris and a numerical framework is established to explore its nonlinear dynamic behaviors, which comprises four principal phases: folding, spreading, contacting, and closing. Based on the discretization of the whole structure into multiple nodes and connected edges, elastic force vectors and associated Jacobian matrix are derived analytically to solve a series of equations of motion. With a fully implicit method applied to analyze the nonlinear dynamics of a slender rod network, the involved mechanical responses are investigated numerically accounting for the interactions. Contact between the deformable net and a rigid body is handled implicitly through a cost-effective modified mass algorithm while the catenary theory is utilized to guide the folding process (from planar configuration to origami-like pattern). The dragging and spreading actions for the folded hexagon net could be realized by shooting six corner mass toward a specific direction; next, the six corners would be controlled to move along a prescribed path producing a closing gesture, when touch between the flying net and the target body is detected, so that for the space debris could be captured and removed successfully. We think the established discrete model could provide a novel insight in the design of active debris removal (ADR) techniques, and promote further development of the model-based control of tether tugging systems., Comment: 19 pages, 18 figures

Published
2022

6. A Semi-analytical Approach for Dynamic Characteristics of Beams with the Effect of Static Load

Author

Yang, Xuan, Li, Yanbin, Chen, Qiang, Fei, Qingguo, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Xu, Jinyang, Editorial Board Member, and Mo, John P.T., editor

Published
2023
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44. Aerothermoelastic tailoring research of composite wing and analysis system development.

Author

Xue Cheng, Li Yanbin, Hang Xiaochen, Zheng Hao, Wang Tianyi, and Fei Qingguo

Abstract

Aiming to solve the complicated problem about the coupling effect of aerodynamic force and heat for hypersonic vehicle, one-way coupling was applied to decouple the environmental load. Then, the distribution of aerodynamic force and heat of a typical composite wing under the flight situation of Mach 5 to Mach 8 was studied by finite element analysis. Based on the classical flutter theory, the critical flutter boundary was obtained. The results show that flutter phenomenon is caused by first-order bending-torsional coupling. Considering the fabricability of the composite wing, the aerothermoelastic tailoring design of composite wing under typical flight situation was carried out. In the optimal process, static intensity and thermal flutter velocity are considered as the constraints, and the optimization target is to obtain minimum mass. For approaching the best structural dynamic characteristics and aeroelastic effect, the bending-torsional coupled stiffness of the composite structure is regulated through changing layers, paving angles and laying sequence. Based on C/C ++ open source environment, a software called Aero-Opt was developed to construct an independent-industrialized analysis platform, and the aerothermoelastic tailoring research of the composite wing under most severe aerodynamic heating condition was carried out. After optimization, the thermal flutter boundary of the composite wing is improved by 22.4%, while its mass is reduced by 15.76% . [ABSTRACT FROM AUTHOR]

Published
2022
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45. Dynamic Out-of-Plane Compressive Failure Mechanism of Carbon/Carbon Composite: Strain Rate Effect on the Defect Propagation and Microstructure Failure

Author

Guo, Fei, Fei, Qingguo, Li, Yanbin, and Gupta, Nikhil

Abstract

Out-of-plane compression experiments with the strain rate from 0.0001/s to 1000/s are performed on a three-dimensional (3D) fine weave-pierced Carbon/Carbon (C/C) composite using a universal testing machine, a high-speed testing machine, and a split Hopkinson pressure bar (SHPB). The compressive failure mechanism of the composite is analyzed by a multi-scale analysis method, which ranges from micro-scale defect propagation, through meso-scale microstructure failure, to macro-scale material failure. In order to predict the out-of-plane compressive properties of 3D fine weave-pierced C/C composite at different strain rates, a strain-rate-dependent compressive constitutive model is proposed. The results show that the out-of-plane compressive behavior of the 3D fine weave-pierced C/C composite is sensitive to strain rate. With increasing the strain rate, the initial compressive modulus, the maximum stress, and the strain at the maximum stress increase. The difference in mechanical behavior between quasi-static and high strain rate compression is owing to the strain rate effect on the defect propagation of the 3D fine weave-pierced C/C composite. The proposed constitutive model matches well with the experimental data.

Published
2021
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