Method and interface elements for finite-element fracture analysis
US7505885B2 · kind B2 · utility
14Cited by
11References
30Claims
0Family size
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Key dates
| Filing date | Jan 24, 2003 |
| Grant date | Mar 17, 2009 |
| Priority date | — |
| Expiry date | Jun 1, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31504
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A finite element method for predicting crack opening and propagation entails defining a succession of overlapping interface elements at a potential crack plane, each element having a bound node pair and side node pairs spaced from the bound node pair to sense approach of a crack. An energy-based fracture mechanics criterion determines whether release occurs at the bound nodes and, if so, the displacement between the bound nodes is calculated based on a strain softening law. The process is repeated for each element in sequence.
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