### Abstract

By employing the Stroh formalism, a general solution satisfying the basic laws of two-dimensional linear anisotropic elasticity has been written in a complex variable formulation. To study the stress singularity, suitable stress functions have been assumed in the exponential form. The singular order near the anisotropic elastic composite wedge apex can then be found by satisfying the boundary conditions. Since there are many material constants and boundary conditions involved, the characteristic equation for the singular order usually becomes cumbersome or leaves in the form of a system of simultaneous algebraic equations. It is therefore difficult to get any important parameters to study the failure initiation of the composite wedges. Through a careful mathematical manipulation, a key matrix N̂ that contains the information of material properties and wedge geometries has been found to be a dominant matrix for the determination of the singular order. A closed-form solution for the order of stress singularity is thus written in a simple form. Special cases such as the wedge corners, cracks, interfacial joints or cracks, a crack terminating at the interface, etc. can all be studied in a unified manner.

Original language | English |
---|---|

Pages (from-to) | 40-50 |

Number of pages | 11 |

Journal | JSME International Journal, Series A: Solid Mechanics and Material Engineering |

Volume | 46 |

Issue number | 1 |

DOIs | |

Publication status | Published - 2003 Jan |

Externally published | Yes |

### Fingerprint

### Keywords

- Anisotropy
- Composite material
- Elasticity
- Stress singularity
- Wedge

### ASJC Scopus subject areas

- Mechanical Engineering
- Materials Science(all)

### Cite this

**A key matrix N̂ for the stress singularity of the anisotropic elastic composite wedges.** / Hwu, Chyanbin; Omiya, Masaki; Kishimoto, Kikuo.

Research output: Contribution to journal › Article

*JSME International Journal, Series A: Solid Mechanics and Material Engineering*, vol. 46, no. 1, pp. 40-50. https://doi.org/10.1299/jsmea.46.40

}

TY - JOUR

T1 - A key matrix N̂ for the stress singularity of the anisotropic elastic composite wedges

AU - Hwu, Chyanbin

AU - Omiya, Masaki

AU - Kishimoto, Kikuo

PY - 2003/1

Y1 - 2003/1

N2 - By employing the Stroh formalism, a general solution satisfying the basic laws of two-dimensional linear anisotropic elasticity has been written in a complex variable formulation. To study the stress singularity, suitable stress functions have been assumed in the exponential form. The singular order near the anisotropic elastic composite wedge apex can then be found by satisfying the boundary conditions. Since there are many material constants and boundary conditions involved, the characteristic equation for the singular order usually becomes cumbersome or leaves in the form of a system of simultaneous algebraic equations. It is therefore difficult to get any important parameters to study the failure initiation of the composite wedges. Through a careful mathematical manipulation, a key matrix N̂ that contains the information of material properties and wedge geometries has been found to be a dominant matrix for the determination of the singular order. A closed-form solution for the order of stress singularity is thus written in a simple form. Special cases such as the wedge corners, cracks, interfacial joints or cracks, a crack terminating at the interface, etc. can all be studied in a unified manner.

AB - By employing the Stroh formalism, a general solution satisfying the basic laws of two-dimensional linear anisotropic elasticity has been written in a complex variable formulation. To study the stress singularity, suitable stress functions have been assumed in the exponential form. The singular order near the anisotropic elastic composite wedge apex can then be found by satisfying the boundary conditions. Since there are many material constants and boundary conditions involved, the characteristic equation for the singular order usually becomes cumbersome or leaves in the form of a system of simultaneous algebraic equations. It is therefore difficult to get any important parameters to study the failure initiation of the composite wedges. Through a careful mathematical manipulation, a key matrix N̂ that contains the information of material properties and wedge geometries has been found to be a dominant matrix for the determination of the singular order. A closed-form solution for the order of stress singularity is thus written in a simple form. Special cases such as the wedge corners, cracks, interfacial joints or cracks, a crack terminating at the interface, etc. can all be studied in a unified manner.

KW - Anisotropy

KW - Composite material

KW - Elasticity

KW - Stress singularity

KW - Wedge

UR - http://www.scopus.com/inward/record.url?scp=0042828972&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0042828972&partnerID=8YFLogxK

U2 - 10.1299/jsmea.46.40

DO - 10.1299/jsmea.46.40

M3 - Article

AN - SCOPUS:0042828972

VL - 46

SP - 40

EP - 50

JO - JSME International Journal, Series A: Solid Mechanics and Material Engineering

JF - JSME International Journal, Series A: Solid Mechanics and Material Engineering

SN - 1344-7912

IS - 1

ER -