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	Eigen-material constants, mode and failure criterion for piezoelectric media
	Zhou ZD(周志东)
	2003
关键词	ANISOTROPIC ELASTIC-MATERIALS FRACTURE-MECHANICS CRACK-TIP STRENGTH STRESS FIELD
英文摘要	In this paper the normalized generalized stress and strain vectors in 9-D space are introduced. A method of constructing the eigen-compliance constants and material modes for the piezoelectric material is presented, which is applied to design a new failure criterion based upon the concept of strain energy modes. In this theory, normalized generalized stress and strain vectors can be additively decomposed into nine independent and non-interaction modal component (T) over bar ((i)) and (S) over bar ((i)) respectively, whose directions are called material modes, and the total strain energy is additively composed with nine independent modal energy components. Along each material mode, there is a modal energy given by (T) over bar ((i))(S) over bar ((i))/2 and it is assumed that the role of different modal energies is different in the failure event. It is postulated that the failure will occur when one of the modal energies or an appropriate linear combination of these energy modes reaches a critical value. PZT-4 piezoelectric ceramic is used as a numerical example to demonstrate the adequacy of the theory with experiment for the piezoelectric failure problem. The calculated result seems to be in good qualitative agreement with experimental data.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/59248]
专题	材料学院－已发表论文
推荐引用方式 GB/T 7714	Zhou ZD. Eigen-material constants, mode and failure criterion for piezoelectric media[J],2003.
APA	周志东.(2003).Eigen-material constants, mode and failure criterion for piezoelectric media..
MLA	周志东."Eigen-material constants, mode and failure criterion for piezoelectric media".(2003).

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