### Abstract

Original language | English |
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Pages (from-to) | 519-531 |

Journal | Science in China Series G: Physics, Mechanics & Astronomy |

Volume | 51 |

Issue number | 5 |

DOIs | |

Publication status | Published - May 2008 |

Externally published | Yes |

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### Cite this

**Calculation of transient dynamic stress intensity factors at bimaterial interface cracks using a SBFEM-based frequency-domain approach.** / Yang, James; Deeks, AJ.

Research output: Contribution to journal › Article

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TY - JOUR

T1 - Calculation of transient dynamic stress intensity factors at bimaterial interface cracks using a SBFEM-based frequency-domain approach

AU - Yang, James

AU - Deeks, AJ

PY - 2008/5

Y1 - 2008/5

N2 - A frequency-domain approach based on the semi-analytical scaled boundary finite element method (SBFEM) was developed to calculate dynamic stress intensity factors (DSIFs) at bimaterial interface cracks subjected to transient loading. Because the stress solutions of the SBFEM in the frequency domain are analytical in the radial direction, and the complex stress singularity at the bimaterial interface crack tip is explicitly represented in the stress solutions, the mixed-mode DSIFs were calculated directly by definition. The complex frequency-response functions of DSIFs were then used by the fast Fourier transform (FFT) and the inverse FFT to calculate time histories of DSIFs. A benchmark example was modelled. Good results were obtained by modelling the example with a small number of degrees of freedom due to the semi-analytical nature of the SBFEM.

AB - A frequency-domain approach based on the semi-analytical scaled boundary finite element method (SBFEM) was developed to calculate dynamic stress intensity factors (DSIFs) at bimaterial interface cracks subjected to transient loading. Because the stress solutions of the SBFEM in the frequency domain are analytical in the radial direction, and the complex stress singularity at the bimaterial interface crack tip is explicitly represented in the stress solutions, the mixed-mode DSIFs were calculated directly by definition. The complex frequency-response functions of DSIFs were then used by the fast Fourier transform (FFT) and the inverse FFT to calculate time histories of DSIFs. A benchmark example was modelled. Good results were obtained by modelling the example with a small number of degrees of freedom due to the semi-analytical nature of the SBFEM.

U2 - 10.1007/s11433-008-0057-y

DO - 10.1007/s11433-008-0057-y

M3 - Article

VL - 51

SP - 519

EP - 531

JO - Science in China Series G: Physics, Mechanics & Astronomy

JF - Science in China Series G: Physics, Mechanics & Astronomy

IS - 5

ER -