### Abstract

The singular stress field which develops at the interface corner of a scarf joint between two bonded elastic solids is investigated. Depending upon the scarf angle and the material elastic properties, the singular stresses at a radial distance r from an interface corner may be expressed in the form Hr(lambda-1), where lambda - 1 is the order of the stress singularity and H is the intensity of the singularity. The intensity H of the singularity at the interface corner of scarf joints subjected to a remote uniform tension is evaluated for various material combinations and a range of scarf angles using a combination of the finite element method and a path independent contour integral. Two types of scarf joints are considered: (i) a scarf joint between two long bi-material strips and (ii) a scarf joint consisting of a thin elastic layer sandwiched between two substrates. The role of the intensity H, which determines the amplitude of the stress field within the singularity zone, is examined and the implications of the results for the initiation of joint failure are discussed. (C) Elsevier, Paris.

Original language | English |
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Pages (from-to) | 443-463 |

Number of pages | 21 |

Journal | European Journal of Mechanics A/Solids |

Volume | 18 |

Publication status | Published - 1999 |

### Keywords

- stress singularity
- bonded joints
- contour integral
- failure initiation
- finite element method
- BONDED DISSIMILAR MATERIALS
- INTENSITY FACTORS
- INTERFACE
- FRACTURE
- WEDGE

### Cite this

*European Journal of Mechanics A/Solids*,

*18*, 443-463.

**An investigation of the stress singularity near the free edge of scarf joints.** / Qian, Z Q ; Akisanya, A R .

Research output: Contribution to journal › Article

*European Journal of Mechanics A/Solids*, vol. 18, pp. 443-463.

}

TY - JOUR

T1 - An investigation of the stress singularity near the free edge of scarf joints

AU - Qian, Z Q

AU - Akisanya, A R

PY - 1999

Y1 - 1999

N2 - The singular stress field which develops at the interface corner of a scarf joint between two bonded elastic solids is investigated. Depending upon the scarf angle and the material elastic properties, the singular stresses at a radial distance r from an interface corner may be expressed in the form Hr(lambda-1), where lambda - 1 is the order of the stress singularity and H is the intensity of the singularity. The intensity H of the singularity at the interface corner of scarf joints subjected to a remote uniform tension is evaluated for various material combinations and a range of scarf angles using a combination of the finite element method and a path independent contour integral. Two types of scarf joints are considered: (i) a scarf joint between two long bi-material strips and (ii) a scarf joint consisting of a thin elastic layer sandwiched between two substrates. The role of the intensity H, which determines the amplitude of the stress field within the singularity zone, is examined and the implications of the results for the initiation of joint failure are discussed. (C) Elsevier, Paris.

AB - The singular stress field which develops at the interface corner of a scarf joint between two bonded elastic solids is investigated. Depending upon the scarf angle and the material elastic properties, the singular stresses at a radial distance r from an interface corner may be expressed in the form Hr(lambda-1), where lambda - 1 is the order of the stress singularity and H is the intensity of the singularity. The intensity H of the singularity at the interface corner of scarf joints subjected to a remote uniform tension is evaluated for various material combinations and a range of scarf angles using a combination of the finite element method and a path independent contour integral. Two types of scarf joints are considered: (i) a scarf joint between two long bi-material strips and (ii) a scarf joint consisting of a thin elastic layer sandwiched between two substrates. The role of the intensity H, which determines the amplitude of the stress field within the singularity zone, is examined and the implications of the results for the initiation of joint failure are discussed. (C) Elsevier, Paris.

KW - stress singularity

KW - bonded joints

KW - contour integral

KW - failure initiation

KW - finite element method

KW - BONDED DISSIMILAR MATERIALS

KW - INTENSITY FACTORS

KW - INTERFACE

KW - FRACTURE

KW - WEDGE

M3 - Article

VL - 18

SP - 443

EP - 463

JO - European Journal of Mechanics A/Solids

JF - European Journal of Mechanics A/Solids

SN - 0997-7538

ER -