Unstable crack motion is predictable
Journal Article
·
· Journal of the Mechanics and Physics of Solids
OSTI ID:15011542
Yoffe's linear theory of dynamic brittle fracture suggests that crack motion will be unstable beyond {approx}70% of the Rayleigh speed, a prediction that is not supported by experiment. We show by atomistic simulations that hyperelasticity, the elasticity of large strains, plays a governing role in the instability dynamics of brittle fracture. A simple scaling model based on an effective elastic modulus, coupled with Yoffe's solution, gives successful predictions for the onset speed of the crack instability.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 15011542
- Report Number(s):
- UCRL-JRNL-206181; TRN: US200507%%525
- Journal Information:
- Journal of the Mechanics and Physics of Solids, Vol. 53, Issue 5
- Country of Publication:
- United States
- Language:
- English
Similar Records
On the response of dynamic cracks to increasing overload
Numerical simulations of dynamic interface crack growth
Statistical analysis of cleavage fracture ahead of sharp cracks and rounded notches
Conference
·
Sun Dec 01 00:00:00 EST 1996
·
OSTI ID:15011542
Numerical simulations of dynamic interface crack growth
Conference
·
Sun Dec 31 00:00:00 EST 1995
·
OSTI ID:15011542
Statistical analysis of cleavage fracture ahead of sharp cracks and rounded notches
Journal Article
·
Sat Nov 01 00:00:00 EST 1986
· Acta Metall.; (United States)
·
OSTI ID:15011542