ENERGY RELEASE RATES FOR INTERFACIAL CRACK IN LAMINATED STRUCTURES

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  • YUAN Hong
    Dept. of Urban and Civil Engineering, Ibaraki University
  • WU Zhishen
    Dept. of Urban and Civil Engineering, Ibaraki University JSCE

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  • 積層複合構造物における界面き裂先端のエネルギ解放率

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Abstract

According to elastic beam theory, in this paper the energy release rate is derived and calculated without the need of a detailed analysis of the crack-tip stress and displacement fields and it is then successfully partitioned into two parts which can reflect the mode I and mode II components. The partitioning of this total value is especially significant because there is considerable ambiguity regarding the values of the energy release rate components at the tip of a crack lying along the interface between two dissimilar isotropic media. An application of the basic solution for concrete stnictures strengthened with steel or FRP plates is made to illustrate its utility.

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