English  |  正體中文  |  简体中文  |  Items with full text/Total items : 62570/95233 (66%)
Visitors : 2550476      Online Users : 140
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/62402

    Title: Transient Analysis of Dynamic Crack Propagation in Piezoelectric Materials
    Authors: 應宜雄;Chen, Xi-hong;Ma, Chien-ching
    Contributors: 淡江大學航空太空工程學系暨研究所
    Keywords: Electrode boundary;Crack propagation;Piezoelectric material;Superposition;Dynamic stress intensity factor;Dynamic electric displacement intensity factor
    Date: 2007-06
    Issue Date: 2013-07-11 11:56:23 (UTC+8)
    Publisher: Taipei : Chinese Institute of Chemical Engineers
    Abstract: In this paper, the transient analysis of semi‐infinite propagating cracks in piezoelectric materials subjected to dynamic anti‐plane concentrated body force is investigated. The crack surface is assumed to be covered with an infinitesimally thin, perfectly conducting electrode that is grounded. In analyzing this problem, it has characteristic lengths and a direct attempt towards solving this problem by transform and Wiener‐Hopf techniques (Noble, 1958) is not applicable. In order to solve this problem, a new fundamental solution for propagating cracks in piezoelectric materials is first established and the transient response of the propagating crack is obtained by superposition of the fundamental solution in the Laplace transform domain. The fundamental solution to be used is the responses of applying exponentially distributed traction in the Laplace transform domain on the propagating crack surface. Taking into account the quasi‐static approximation, exact analytical transient solutions for the dynamic stress intensity factor and the dynamic electric displacement intensity factor are obtained by using the Cagniard‐de Hoop method (Cagnard, 1939; de Hoop, 1960) of Laplace inversion and are expressed in explicit forms. Numerical calculations of dynamic intensity factors are evaluated and the results are discussed in detail. The transient solutions for stationary cracks have been shown to approach the corresponding static values after the shear wave of the piezoelectric material has passed the crack tip.
    Relation: Journal of the Chinese Institute of Engineers=中國工程學刊 30(3), pp.491-502
    DOI: 10.1080/02533839.2007.9671277
    Appears in Collections:[Graduate Institute & Department of Aerospace Engineering] Journal Article

    Files in This Item:

    File SizeFormat

    All items in 機構典藏 are protected by copyright, with all rights reserved.

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - Feedback