Abstract
The influence of parameters in the Gurson's constitutive equation for porous plastic materials on ductile fracture at an interface crack under mixed mode loading is discussed based on a comparison of computational and experimental results. A simple method to estimate the parameters using the deformation data of tensile specimens and the Kalman filter is proposed. A finite element simulation is performed to demonstrate the usefulness of the proposal method. It is suggested that two different specimens (e. g., one is a rectangular plate with a center hole and the other is a side notched plate) are necessary to guarantee a correct estimation.
| Original language | English |
|---|---|
| Pages (from-to) | 305-309 |
| Number of pages | 5 |
| Journal | Zairyo/Journal of the Society of Materials Science, Japan |
| Volume | 45 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 1996 |
Keywords
- Ductile fracture
- Finite element method
- Gurson's material
- Interface crack
- Kalman filter
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