金峰
个性化签名
- 姓名:金峰
- 目前身份:
- 担任导师情况:
- 学位:
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学术头衔:
教育部“新世纪优秀人才支持计划”入选者, 博士生导师
- 职称:-
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学科领域:
固体力学
- 研究兴趣:
金峰,男,1968年生。
1998年10月在西北工业大学飞机系获得固体力学博士学位。
2002年7月至2004年7月,应日本学术振兴会(Japan Society for the Promotion of Science, JSPS)邀请,作为JSPS Fellow和东京工业大学客员研究员,在日本东京工业大学机械与控制工程系从事合作研究。
2004年7月至2005年5月,受聘于东京工业大学21世纪COE(Center of Excellence)项目研究员,继续在东京工业大学从事合作研究。
2005年6月到西安交通大学航天航空学院被聘为教授,2005年12月起任固体力学博士生导师。
2006年12月至2007年3月,东京工业大学访问教授。入选2008年度教育部“新世纪优秀人才支持计划”。
主要从事非均匀介质(包括复合材料、功能梯度材料、层状介质等)中弹性波的传播行为、智能材料与结构、声波器件的力学分析、泡沫材料及结构冲击吸能、降噪特性等方面的理论分析与实验研究工作。在国内外重要学术期刊上发表研究论文50 余篇。主持国家基础研究计划“973”项目课题一项,曾主持和参与完成国家自然科学基金重点项目,总参XX重点科研项目,国家自然科学基金面上项目,教育部博士点基金项目等方面的研究课题6项。
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2952
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成果阅读
471
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成果数
15
金峰, Xiaoshan Cao a, Feng Jin b, Insu Jeon a, *, Tian Jian Lu b
International Journal of Solids and Structures 46 (2009) 4123–4132,-0001,():
-1年11月30日
In this theoretical study, we investigate the propagation of Love waves in a layered structure consisting of two different homogenous piezoelectric materials, an upper layer and a substrate. A functionally graded piezoelectric material (FGPM) buffer layer is in between the upper layer and the substrate. We employ the power series technique to solve the governing differential equations with variable coefficients. The influence of the gradient coefficients of FGPM and the layer thicknesses on the dispersion relations, the electro-mechanical coupling factor, and the stress distributions of Love waves in this structure are investigated. We demonstrate that the low gradient coefficient raises the significant variation of the phase velocity within a certain range of ratios of upper layer thickness to equivalent thickness. The electro-mechanical coupling factor can be increased when the equivalent thickness equals one or two wavelengths, and the discontinuity of the interlaminar stress can be eliminated by the FGPM buffer layer. The theoretical results set guidelines not only for the design of high-performance surface acoustic wave (SAW) devices using the FGPM buffer layer, but also for the measurement of material properties in such FGPM layered structures using Love waves.
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【期刊论文】Effects of material gradient on transverse surface waves in piezoelectric coupled solid media
金峰, Zheng-Hua Qian, , a) Feng Jin, Sohichi Hirose, and Tian-Jian Lu
APPLIED PHYSICS LETTERS 95, 073501 2009 ,-0001,():
-1年11月30日
An analytical study on transverse surface waves propagating in a functionally graded material carrying a piezoelectric layer is carried out by Wentzel-Kramers-Brillouin technique. Dispersion relations for the existence of the waves are obtained for material gradient of arbitrary functions and the effects of material gradient on wave propagation are quantified. Numerical examples show the presence of material gradient significantly affects long waves but has only negligible effects on short waves. Depending on whether the surface wave velocity is smaller or greater than the bulk-shear-wave velocity in the piezoelectric layer, two different types of dispersion behavior are discussed.
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金峰, Zheng-Hua Qian, , a, Feng Jin, Tian-Jian Lu, and Kikuo Kishimoto
APPLIED PHYSICS LETTERS 94, 093513 2009,-0001,():
-1年11月30日
The propagation of transverse surface waves in a piezoelectric material carrying a prestressed metal layer of finite thickness is investigated analytically. The dispersion equation is solved in closed form for class 6mm piezoelectric materials and the conditions for the existence of various wave modes are obtained. Numerical examples are presented for an aluminum, gold, or zinc layer on a PZT-4 ceramic substrate. The presence of initial stress can extend or shorten the range of phase velocity within which a nonleaky but dispersive mode exists. The dependence of phase velocity on initial stress opens a new window for designing acoustic wave devices.
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金峰, Zheng-Hua Qian, , a) Feng Jin, Tian-Jian Lu, and Kikuo Kishimoto
APPLIED PHYSICS LETTERS 94, 023501(2009)1-3,-0001,():
-1年11月30日
An analytical study on transverse surface waves propagating in a functionally graded piezoelectric substrate carrying a metal layer of finite thickness was carried out. Dispersion relations for the existence of the waves were obtained and the effects of material gradient on wave propagation were quantified. Numerical examples show that the presence of the material gradient affects significantly the fundamental mode but has only negligible effects on the higher order modes. Depending on whether the surface wave velocity is smaller or greater than the bulk shear wave velocity in the metal layer, three different types of the dispersion behavior are discussed.
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【期刊论文】Propagation behavior of Love waves in a functionally graded half-space with initial stress
金峰, Zheng-Hua Qian a, b, *, Feng Jin a, Kikuo Kishimoto b, Tianjian Lu a
International Journal of Solids and Structures 46(2009)1354-1361,-0001,():
-1年11月30日
The propagation behavior of Love waves in a functionally graded material layered non-piezoelectric half-space with initial stress is taken into account. The Wentzel-Kramers-Brillouin (WKB) technique is adopted for the theoretical derivations. The analytical solutions are obtained for the dispersion relations and the distributions of the mechanical displacement and stress along the thickness direction in the layered structure. First, these solutions are used to study the effects of the initial stress on the dispersion relations and the group and phase velocities, then the influences of the initial stress on the distributions of the mechanical displacement and shear stresses along the thickness direction are discussed in detail. Numerical results obtained indicate that the phase velocity of the Love waves increases with the increase in the magnitude of the initial tensile stress, while decreases with the increase in the magnitude of the initial compression stress. The effects on the dispersion relations of the Love wave propagation are negligible as the magnitudes of the initial stress are less than 100MPa. Some other results are obtained for the distributions of field quantities along thickness direction. The results obtained are not only meaningful for the design of functionally graded structures with high performance but also effective for the evaluation of residual stress distribution in the layered structures.
Love waves, Initial stress, Functionally graded materials, Dispersion relations Wentzel-Kramers-Brillouin (, WKB), technique
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【期刊论文】Basic properties of Rayleigh surface wave propagation along curved surfaces
金峰
,-0001,():
-1年11月30日
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金峰
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-1年11月30日
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金峰
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-1年11月30日
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金峰
,-0001,():
-1年11月30日
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32浏览
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【期刊论文】Investigation of scattering of elastic waves by cylinders in 1–3 piezocomposites
金峰
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-1年11月30日
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