| Interaction between subinterface cracks and interface in metal/piezoelectric ceramic bimaterials |
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| 作者姓名： | 田文叶 陈宜亨 |
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| 作者单位： | TIAN Wenye & CHEN Yiheng1. School of Mechanical Engineering，Taiyuan University of Technology，Taiyuan 030024，China;2. School of Civil Engineering and Mechanics，Xi'an Jiaotong University，Xi'an 710049，China |
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| 摘 要： | A class of problems concerning subinterface cracks interacting with the interface in metal/ piezoelectric ceramic bimaterials are studied. The interaction problem is reduced to a system of integral equations with the aid of the pseudo-traction-electric-displacement method. The equations are solved numerically, and the stress intensity factor, the electric displacement intensity factor and the mechanical strain energy release rate are evaluated. Numerical results of a Cu/PZT-4 bimaterial are given and shown in figures, in which three kinds of remote loading conditions are considered to make comparisons . It is found that the electric loading at infinity plays a quite important role in the present interaction problem. In addition, a conservation law of the first component of the Jk-integral vector is found, which does lead to a consistency check to confirm the effectiveness of the PTEDM as well as the numerical results derived in this paper.
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Interaction between subinterface cracks and interface in metal/piezoelectric ceramic bimaterials |
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| Wenye Tian and Yiheng Chen.Interaction between subinterface cracks and interface in metal/piezoelectric ceramic bimaterials[J].Science in China(Technological Sciences),2002,45(1):10-18. |
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| Authors: | Wenye Tian and Yiheng Chen |
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| Affiliation: | 1. School of Mechanical Engineering,Taiyuan University of Technology,Taiyuan 030024,China
2. School of Civil Engineering and Mechanics,Xi'an Jiaotong University,Xi'an 710049,China |
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| Abstract: | A class of problems concerning subinterface cracks interacting with the interface in metal/ piezoelectric ceramic bimaterials are studied. The interaction problem is reduced to a system of integral equations with the aid of the pseudo-traction-electric-displacement method. The equations are solved numerically, and the stress intensity factor, the electric displacement intensity factor and the mechanical strain energy release rate are evaluated. Numerical results of a Cu/PZT-4 bimaterial are given and shown in figures, in which three kinds of remote loading conditions are considered to make comparisons . It is found that the electric loading at infinity plays a quite important role in the present interaction problem. In addition, a conservation law of the first component of the Jk-integral vector is found, which does lead to a consistency check to confirm the effectiveness of the PTEDM as well as the numerical results derived in this paper. |
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| Keywords: | metal/piezoelectric ceramic bimaterials subinterface crack J-integral analysis |
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