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Yueming Li

Bio: Yueming Li is an academic researcher from Xi'an Jiaotong University. The author has contributed to research in topics: Computer science & Vibration. The author has an hindex of 19, co-authored 93 publications receiving 1112 citations.


Papers
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Journal ArticleDOI
TL;DR: In this article, the thermal conductivity of five polyurethane foam samples formed by blowing agents of CP, CP+IP, CP−+-245fa and CP+−245fa+LBA were measured using transient plane source method under various environment.

132 citations

Journal ArticleDOI
Jun Pan1, Jinglong Chen1, Yanyang Zi1, Yueming Li1, Zhengjia He1 
TL;DR: The modified EWT (MEWT) method via data-driven adaptive Fourier spectrum segment is proposed for mechanical fault identification and the results show its outstanding performance.

128 citations

Journal ArticleDOI
TL;DR: In this article, a study on vibration and acoustic radiation characters of an isotropic rectangular thin plate under thermal environments is presented, which is assumed that thermal loads caused by thermal environments just change the structure stress state.
Abstract: A study on vibration and acoustic radiation characters of an isotropic rectangular thin plate under thermal environments is presented in this paper. It is assumed that thermal loads caused by thermal environments just change the structure stress state. Thermal stresses induced by uniform temperature rise of the plate are determined with the thermo-elastic theory. Then the stress state is used in the following dynamic analysis as a pre-stressed factor. It is observed that thermal loads influence the natural frequencies evidently, especially the fundamental natural frequency. The order of mode shapes stays the same. Dynamic response peaks float to lower frequency range with the increment of structure temperature. Acoustic radiation efficiency of the plate subjected to thermal loads decreases in the mid-frequency band. For validation, numerical simulations are also carried out. It can be found that the combined approach of finite element method (FEM) and boundary element method (BEM) is more appropriate for radiation problems.

58 citations

Journal ArticleDOI
TL;DR: Experiments to investigate the vibration and acoustic response characteristics of a clamped rectangular aluminum plate in thermal environments indicated that the initial deflection has a great influence on the natural vibration of the heated plate.
Abstract: Experiments were performed to investigate the vibration and acoustic response characteristics of a clamped rectangular aluminum plate in thermal environments. Modal tests were carried out to study the influence of thermal environment on natural vibration. With the increment of structural temperature, natural frequencies of the plate decrease obviously. Mode shape interchange was observed for the modes with frequencies very close to each other. The thermally induced softening effect has unequal influences on the plate along the two in-plane directions. Numerical methods were also employed to study the experimental phenomena. Calculated results indicated that the initial deflection has a great influence on the natural vibration of the heated plate. Even a slight curvature can reduce the thermally induced softening effect obviously. Dynamic response tests were carried out under acoustic and mechanical excitations, and the measured results indicate that the variation in damping determines the response amplitudes at resonant peaks in the test.

56 citations

Journal ArticleDOI
Hu Zhang1, Wen-Zhen Fang1, Xian Wang1, Yueming Li1, Wen-Quan Tao1 
TL;DR: In this paper, the spectral extinction coefficient of fiber/opacifier loaded silica aerogel composite is obtained by considering the practical absorption of KBr diluents, and the thermal conductivity of 10 fiber and opacifier doped 10-layer composites are studied experimentally and theoretically.

51 citations


Cited by
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BookDOI
02 Nov 2005
TL;DR: In this article, the authors presented a comprehensive analysis of the four Elastic Moduli coefficients of a Unidirectional Lamina Coefficients of Thermal Expansion and Moisture Expansion.
Abstract: INTRODUCTION TO COMPOSITE MATERIALS Chapter Objectives Introduction Classi?cation Recycling Fiber-Reinforced Composites Mechanics Terminology Summary Key Terms Exercise Set References MACROMECHANICAL ANALYSIS OF A LAMINA Chapter Objectives Introduction Review of De?nitions Hooke's Law for Different Types of Materials Hooke's Law for a Two-Dimensional Unidirectional Lamina Hooke's Law for a Two-Dimensional Angle Lamina Engineering Constants of an Angle Lamina Invariant Form of Stiffness and Compliance Matrices for an Angle Lamina Strength Failure Theories of an Angle Lamina Hygrothermal Stresses and Strains in a Lamina Summary Key Terms Exercise Set References APPENDIX A: MATRIX ALGEBRA Key Terms APPENDIX B: TRANSFORMATION OF STRESSES AND STRAINS Transformation of Stress Transformation of Strains Key Terms MICROMECHANICAL ANALYSIS OF A LAMINA Chapter Objectives Introduction Volume and Mass Fractions, Density, and Void Content Evaluation of the Four Elastic Moduli Ultimate Strengths of a Unidirectional Lamina Coefficients of Thermal Expansion Coefficients of Moisture Expansion Summary Key Terms Exercise Set References MACROMECHANICAL ANALYSIS OF LAMINATES Chapter Objectives Introduction Laminate Code Stress-Strain Relations for a Laminate In-Plane and Flexural Modulus of a Laminate Hygrothermal Effects in a Laminate Summary Key Terms Exercise Set References FAILURE, ANALYSIS, AND DESIGN OF LAMINATES Chapter Objectives Introduction Special Cases of Laminates Failure Criterion for a Laminate Design of a Laminated Composite Other Mechanical Design Issues Summary Key Terms Exercise Set References BENDING OF BEAMS Chapter Objectives Introduction Symmetric Beams Nonsymmetric Beams Summary Key Terms Exercise Set References INDEX

401 citations

Journal ArticleDOI
TL;DR: In this paper, a 3D meso-scale finite element model of concrete based on in-situ X-ray Computed Tomography (XCT) images is developed and validated.

293 citations

Journal ArticleDOI
TL;DR: In this paper, the authors present a systematic classification of representative volume element (RVE) generation techniques for heterogeneous materials, and divide heterogeneous solids into porous and non-porous media.

276 citations

Journal ArticleDOI
TL;DR: In this paper, an independence-oriented VMD method via correlation analysis is proposed to adaptively extract weak and compound fault feature of wheel set bearing of high speed locomotive, and then the similar modes are combined according to the similarity of their envelopes to solve the over decomposition problem.

257 citations