Numerical Simulation Series: Fracture Mechanics Parameters
Abstract: In this edition of ESRD’s Numerical Simulation Series, the computation of fracture mechanics parameters via numerical simulation is examined in detail. Highlights include:
- Computation of 2D and 3D stress intensity factors (SIFs) by the contour integral method (CIM)
- Computation of the 3D energy release rate (ERR) components using the separated J-integral
- Review of Crack Closure Methods and aspects of their implementation for the computation of the 3D ERR components
- Examples of computing fracture mechanics parameters by numerical simulation (via StressCheck Professional), with evidence of solution verification
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“At DST Group, we have effectively used StressCheck® over the last 10 years to determine accurate stress intensity factors. The results have been used to improve our residual strength and structural life estimates for aircraft in service with the Royal Australian Airforce, including C-130, P-3C and F/A-18 A/B. We have found it to be extremely easy to use and a very versatile code with which to create parametric models.
We have recently used StressCheck® to obtain improved stress intensity factor solutions (Improved stress intensity factors for selected configurations in cracked plates and Improved stress intensity factors for a single corner crack at a loaded fastener hole) for five key generic configurations. These transferable parametric results have been published externally. One specific example is the non-linear contact analysis of a cracked, filled fastener hole, with both fastener and remote plate loading.”
Dr. Manfred Heller, HeadStructural & Damage Mechanics, DST Group