### Abstract

Inertial effects in the mechanism of fiber pullout during dynamic propagation of a bridged crack are critically examined. By reposing simple shear lag models of pullout as problems of dynamic wave propagation, the effect of frictional coupling between the fiber and the matrix is accounted for in a fairly straightforward way. The frictional sliding between the fiber and the matrix is described by a constant interfacial friction stress, the sign of which depends on the relative particle velocity of the fiber and the matrix. Analytical solutions are derived when the load or bridging traction on the fiber in the crack plane increases linearly in time. The results show that when the wave speed of the matrix exceeds a critical value, the frictional fiber pullout behavior transitions from a state of pure slip to a state where part of the sliding zone slips and the remaining sticks. When stick occurs, the fiber and the matrix within the stick zone slide past each other with an interfacial shear stress less than the shear stress required for slipping. Regions of slip and stick propagate and increase with time and influence the time-dependent relationship between the crack opening displacement and the bridging tractions.

Original language | English (US) |
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Title of host publication | American Society of Mechanical Engineers, Aerospace Division (Publication) AD |

Editors | A.M. Waas, J.D. Whitcomb |

Pages | 47-54 |

Number of pages | 8 |

Volume | 66 |

State | Published - 2001 |

Externally published | Yes |

Event | 2001 ASME International Mechanical Engineering Congress and Exposition - New York, NY, United States Duration: Nov 11 2001 → Nov 16 2001 |

### Other

Other | 2001 ASME International Mechanical Engineering Congress and Exposition |
---|---|

Country | United States |

City | New York, NY |

Period | 11/11/01 → 11/16/01 |

### Fingerprint

### ASJC Scopus subject areas

- Mechanical Engineering
- Space and Planetary Science

### Cite this

*American Society of Mechanical Engineers, Aerospace Division (Publication) AD*(Vol. 66, pp. 47-54)

**Fiber pullout characteristics under dynamic loading conditions.** / Sridhar, N.; Yang, Qingda; Cox, B. N.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

*American Society of Mechanical Engineers, Aerospace Division (Publication) AD.*vol. 66, pp. 47-54, 2001 ASME International Mechanical Engineering Congress and Exposition, New York, NY, United States, 11/11/01.

}

TY - GEN

T1 - Fiber pullout characteristics under dynamic loading conditions

AU - Sridhar, N.

AU - Yang, Qingda

AU - Cox, B. N.

PY - 2001

Y1 - 2001

N2 - Inertial effects in the mechanism of fiber pullout during dynamic propagation of a bridged crack are critically examined. By reposing simple shear lag models of pullout as problems of dynamic wave propagation, the effect of frictional coupling between the fiber and the matrix is accounted for in a fairly straightforward way. The frictional sliding between the fiber and the matrix is described by a constant interfacial friction stress, the sign of which depends on the relative particle velocity of the fiber and the matrix. Analytical solutions are derived when the load or bridging traction on the fiber in the crack plane increases linearly in time. The results show that when the wave speed of the matrix exceeds a critical value, the frictional fiber pullout behavior transitions from a state of pure slip to a state where part of the sliding zone slips and the remaining sticks. When stick occurs, the fiber and the matrix within the stick zone slide past each other with an interfacial shear stress less than the shear stress required for slipping. Regions of slip and stick propagate and increase with time and influence the time-dependent relationship between the crack opening displacement and the bridging tractions.

AB - Inertial effects in the mechanism of fiber pullout during dynamic propagation of a bridged crack are critically examined. By reposing simple shear lag models of pullout as problems of dynamic wave propagation, the effect of frictional coupling between the fiber and the matrix is accounted for in a fairly straightforward way. The frictional sliding between the fiber and the matrix is described by a constant interfacial friction stress, the sign of which depends on the relative particle velocity of the fiber and the matrix. Analytical solutions are derived when the load or bridging traction on the fiber in the crack plane increases linearly in time. The results show that when the wave speed of the matrix exceeds a critical value, the frictional fiber pullout behavior transitions from a state of pure slip to a state where part of the sliding zone slips and the remaining sticks. When stick occurs, the fiber and the matrix within the stick zone slide past each other with an interfacial shear stress less than the shear stress required for slipping. Regions of slip and stick propagate and increase with time and influence the time-dependent relationship between the crack opening displacement and the bridging tractions.

UR - http://www.scopus.com/inward/record.url?scp=0242577343&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0242577343&partnerID=8YFLogxK

M3 - Conference contribution

VL - 66

SP - 47

EP - 54

BT - American Society of Mechanical Engineers, Aerospace Division (Publication) AD

A2 - Waas, A.M.

A2 - Whitcomb, J.D.

ER -